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International Conferenceon Photochemistry

Edited by Maarten Roeffaers & Johan Hofkens

ICP-abstracts.indd 1 30/06/13 21:24

Edited by Maarten Roeffaers & Johan Hofkens

2013, Department of Chemistry, Faculty of Science, KU Leuven, Celestijnenlaan 200 F, 3001 Leuven, Belgium

All rights reserved. No part of this publication may be reproduced in any form by print, photoprint, microfilm, electronic or any other means without written permission of the publisher.

ISBN 978 94 6165 084 9D/2013/1869/30

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Thanks to


VIII

Thanks to


IX

Thanks to


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International Advisory Board

- prof. Cornelia Bohne (Victoria, Canada)- prof. Alexander Chibisov (Moscow, Russia)- prof. Abderrazzak Douhal (Toledo, Spain)- prof. Ken Ghiggino (Melbourne, Australia)- prof. Axel Griesbeck (Kln, Germany)- prof. Stefan Haacke (Strasburg, France)- prof. Anita Jones (Edinburgh, UK)- prof. Yamanouchi Kaoru (Tokyo, Japan)- prof. Hiroshi Miyasaka (Osaka, Japan)- prof. Greg Scholes (Toronto, Canada)- prof. Benjamin Schwartz (UCLA, USA)- prof. Eric Vauthey (Geneva, Swiss)- prof. Peter Vhringer (Bonn, Germany)- prof. Guoqiang Yang (Beijing, China)

Local organizing and scientific committee

Organizers

- prof. Maarten Roeffaers (KU Leuven)- prof. Johan Hofkens (KU Leuven)

Honorary member- prof. Frans De Schryver (KU Leuven)

Members- prof. Marcel Ameloot (UHasselt)- prof. David Beljonne (UMons)- prof. Kevin Braeckmans (UGhent)- prof. Koen Clays (KU Leuven)- prof. Steven De Feyter (KU Leuven)- dr. Eduard Fron (KU Leuven)- prof. Andre Kirsch-De Mesmaeker (ULB)- prof. Hiroshi Uji-I (KU Leuven)- prof. Mark Van der Auweraer (KU Leuven)


XI

Preface

Dear Colleagues and Friends,

It is with great pleasure that we welcome you to the 26th International Conference on Photochemistry (ICP 2013), held in the beautiful city of Leuven, Belgium from July 21st till July 26th 2013! We hope that the scientific program that we have put together will be of great interest for all of you.

The International Conference on Photochemistry has a long-standing tradition in bringing together world-leading scientists working in all areas of fundamental and applied photochemistry and related sciences. The program for ICP2013 will consist of 13 plenary lectures, 36 invited lectures, 196 oral presentations, all of this is condensed into 4 parallel and 10 thematic sessions distributed over six days, and 2 poster sessions with over 300 posters on display.

This book contains the abstracts of the different plenary speakers, invited lectures, oral communications and poster presentations. We are delighted that all major fields of photochemistry are well represented and we have received numerous high quality scientific contributions of participants from all over the world. The participation of a significant number of young colleagues at the PhD and postdoctoral level is particularly encouraging.

We hope that besides excellent and inspiring science, this meeting will also allow you to catch up with old friends and enable you to meet new people. In order to facilitate this we have organized fully catered poster sessions on the first two days to which you are all warmly invited. With its friendly atmosphere and its many restaurants and bars, Leuven offers unique opportunities for personal and professional interactions.

We wish you a stimulating meeting and a pleasant stay in Leuven.

Johan HofkensMaarten Roeffaers


XII


XIII


XIV

Photochemistry in polymers and material science

Self-Assembly in Confined Space (SACS) session

The SACS project (Self-Assembly in Confined Space) is a collaborative focused research project in the FP7 program (NMP.2012.1.4-2 Hierarchical assembly of nano-scale building blocks) , bringing together 6 academic partners and 3 industrial partners (http://www.fp7-sacs.com/partners).SACS focuses on the formation of functional structures with novel, unique properties through self-assembly in restricted or controlled space and on formation of assemblies with strictly controlled geometries, size and shape and outstanding properties. The functionalities that are specifically aimed for are: electrical conductivity, optical properties and catalytic activity.

Novel phosphor materials. Current phosphors for lighting applications are largely based on scarce, expensive and environment-unfriendly rare-earth elements. This project will develop novel phosphor materials based on the concept of self-organizing oligoatomic metal clusters in nanoporous host for optimized optical properties.

Novel conductive and electrochromic materials. Transparent electrical conductive materials and optimized electrochromic materials are of key importance in the generation of novel display technologies. In this EU funded project, we will assess the use of carbon nanotube self-structured materials as an optical transparent conductive material. Dye-loaded porous systems will be developed and tested for their electrochromic performance.

New catalytic materials. The development of more efficient catalytic systems is essential to the pursuit of a sustainable society. Apart from improving the performance of existing industrial processes, nano-sized catalysts have the potential to lead to exploitation of renewable, efficient, and inexpensive sources for alternative energy and chemicals production. This consortium envisions the reliable generation, the long-term stabilization and future scaling up of such nano-sized metal catalysts via the use of self-assembly concepts within nanoporous host materials.

Invited and plenary speakers in the Photochemistry in Polymers and Materials/SACS session on Tuesday, Wednesday and Thursday are:

- Luisa De Cola (plenary speaker, Hard and soft luminescent materials. Properties and applications)

- Suzanne Blum (invited speaker, Chemistry at the Single-Molecule and -Particle Level)

- Bert Weckhuysen (invited speaker, Surface Enhanced Raman Spectroscopy for Catalysis Research)

- Suresh Das (invited speaker, Photoresponsive Materials)

- Jasper Knoester (invited speaker, Localization, Dynamics, and Optics of Excitons in Self Assembled Molecular Nanotubes for Light-Harvesting)


XV

Programme at glance

Sunday July 21

PDS

14.00 - 18.00 Arrival and registration18.00 - 18.15 Opening by Johan Hofkens18.15 - 19.45 Plenary session20.00 - 22.00 Reception - University Halls

Monday July 22

PDS MTC-1 MTC-2 MTC-3

8.30 - 10.00 Plenary session - PDS10.00 - 10.30 Coffee/Tea break - Time to move to parallel session10.30 - 12.00 Plasmonics &

PhotonicsPolymers & Materials

Biology Novel Developments

12.00 - 13.25 Lunch break13.25 - 14.10 Plenary session - PDS14.10 - 14.20 Time to move to parallel session14.20 - 16.10 Plasmonics &

PhotonicsSustainable Technology


16.10 - 16.40 Coffee/Tea break 16.40 - 18.00 Plasmonics &

PhotonicsSustainable Technology


18.00 - 21.00 Poster Session - Fully catered, theme: Belgian Night - University Halls

Tuesday July 23


8.30 - 10.00 Plenary session - PDS10.00 - 10.30 Coffee/Tea break - Time to move to parallel session10.30 - 12.00 Plasmonics &

PhotonicsPolymers & Materials


12.00 - 13.25 Lunch break13.25 - 14.10 Plenary session - PDS14.10 - 14.20 Time to move to parallel session14.20 - 16.10 Plasmonics &

PhotonicsPolymers & Materials - SACS

Biology Inorganic & Theoretical

16.10 - 16.40 Coffee/Tea break 16.40 - 18.00 Plasmonics &

PhotonicsPolymers & Materials - SACS


18.00 - 21.00 Poster Session - Fully catered, theme: BBQ Night - University Halls


XVI

Wednesday July 24


8.30 - 9.15 Plenary session - PDS9.15 - 9.20 Time to move to parallel session9.20 - 10.10 Labels Basic

PhotochemistrySingle Molecule Inorganic &

Theoretical 10.10 - 10.40 Coffee/Tea break10.40 - 12.00 Labels Basic

PhotochemistrySingle Molecule Inorganic &

Theoretical12.00 - 13.00 Lunch break13.00 - 13.45 Plenary session - PDS13.45 - 13.50 Time to move to parallel session13.50 - 15.40 Labels Polymers &

Materials - SACSSingle Molecule Inorganic &

Theoretical16.00 - 18.30 Social Programme19.30 - 24.00 Conference Dinner - Faculty Club21.30 - 02.00 Student Party - Social Club

Thursday July 25


8.30 - 9.15 Plenary session - PDS9.15 - 9.20 Time to move to parallel session9.20 - 10.10 Polymers &

Materials - SACSBasic Photochemistry

Ultrafast Single Molecule

10.10 - 10.40 Coffee/Tea break10.40 - 12.00 Polymers &

Materials - SACSBasic Photochemistry


12.00 - 13.25 Lunch break13.25 - 14.10 Plenary session - PDS14.10 - 14.20 Time to move to parallel session14.20 - 16.10 Sustainable

TechnologyBasic Photochemistry


16.10 - 16.40 Coffee/Tea break16.40 - 18.00 Sustainable



18.30 - 22.00 Beer Tapping Course (first 100 paying registrants)

Friday July 26


8.30 - 9.15 Plenary session - PDS9.15 - 9.20 Time to move to parallel session9.20 - 10.10 Sustainable


Ultrafast Polymers & Materials

10.10 - 10.40 Coffee/Tea break10.40 - 12.00 Sustainable



12.05 - 12.20 Closing Remarks by Johan Hofkens - PDS


XVII

Programme overview

Sunday July 21

PDS

14.00 - 18.00 Arrival and registration 18.00 - 18.15 Opening by Johan Hofkens

Plenary session18.15 - 19.00 S. Hell19.00 - 19.45 T. Ebbesen20.00 - 22.00 Reception - University Halls

Monday July 22


Plenary session - PDS8.30 - 9.15 P. Weiss9.15 - 10.00 H. Misawa10.00 - 10.30 Coffee/Tea break - Time to move to parallel session

Plasmonics & Photonics

Polymers & Materials


10.30 - 11.00 P. Tinnefeld H. Fukumura T. Gensch A. Diaspro11.00 - 11.20 K. Nakatani K. Heyne Y. Tor J. Hendrix11.20 - 11.40 Y. Tsuboi M. Penconi E. De

MeulenaereA. Huss

11.40 - 12.00 T. Shoji S. Kajimoto Y. Urano R. Camacho

12.00 - 13.25 Lunch breakPlenary session - PDS

13.25 - 14.10 A. Miyawaki14.10 - 14.20 Time to move to parallel session


Sustainable Technology


14.20 - 14.50 S. Link Y. Li M. Kuimova G. Van Tendeloo14.50 - 15.10 K. Imura A. Douhal P. Plaza J. Hoogenboom15.10 - 15.30 K. Sasaki F. Odobel M. Vos M. Tchaya 15.30 - 15.50 E. Mencarelli F. Pina A. Banyasz T. Pieper15.50 - 16.10 I. Izquierdo J. Lin R. Improta A. Jones16.10 - 16.40 Coffee/Tea break




16.40 - 17.00 J. Hutchison A. Alessi A. Griesbeck A. Miura17.00 - 17.20 T. Kaji C. Ley B. Cohen S. Maillot17.20 - 17.40 D. Piatkowski D. Cao T. Domratcheva S. Uno17.40 - 18.00 D. Van Dorpe S. Babu H. Yoshikawa S. Ito18.00 - 21.00 Poster Session - Fully catered, theme: Belgian Night - University Halls


XVIII

Tuesday July 23


Plenary session - PDS8.30 - 9.15 J. Wrachtrup9.15 - 10.00 T. Rasing10.00 - 10.30 Coffee/Tea break - Time to move to parallel session


Polymers & Materials


10.30 - 11.00 L. Liz-Marzn S. Blum P. Ogilby R. Miller11.00 - 11.20 C. Chen Z. Ristanovic C. Flors J. Grilj11.20 - 11.40 S. Centeno L. Albertazzi F. Koberling L. Huang11.40 - 12.00 K. Murakoshi S. Furukawa S. Tobita Y. Ishibashi


13.25 - 14.10 L. De Cola14.10 - 14.20 Time to move to parallel session


Polymers & Materials - SACS


14.20 - 14.50 L. Latterini B. Weckhuysen E. Yeow D. Parker14.50 - 15.10 T. Lerond V. Martinez-

MartinezR. Meallet-Renault

E. Longhi

15.10 - 15.30 S. Masuo S. Diring M. Gascon S. Denisov15.30 - 15.50 K. Setoura A. Klymchencko P. Dedecker X. Zhou15.50 - 16.10 T. Lohmller C. Allain E. Romero N. Nakashima16.10 - 16.40 Coffee/Tea break




16.40 - 17.00 J. You K. Ushida T. Kottke P. Ceroni17.00 - 17.20 T. Torimoto Y. Osakada H. Kashida C. Laia17.20 - 17.40 Y. Takahashi A. Usman L. Chu P. Ashokkumar17.40 - 18.00 H. Pfeiffer G. Hamilton E. Zeletsova J. Torres-Alcan18.00 - 21.00 Poster Session - Fully catered, theme: BBQ Night - University Halls


XIX

Wednesday July 24


Plenary session - PDS8.30 - 9.15 W.E. Moerner9.15 - 9.20 Time to move to parallel session

Labels Basic Photochemistry

Single Molecule Inorganic & Theoretical

9.20 - 9.50 D. Bourgeois N. Branda M. Orrit K. Song9.50 - 10.10 T. Vosch M. Rudolf D. Wll J. Gamez10.10 - 10.40 Coffee/Tea break

Labels Basic Photochemistry


10.40 - 11.00 M. Yoon O. Federova D. Herten S. Knippenberg11.00 - 11.20 F. Brouwer J. Karpiuk T. Cordes P. Klle11.20 - 11.40 G. Yang N. Tkachenko A. Frstenberg E. Freidzon11.40 - 12.00 A. Dierckx G. Angulo T. Aartsma L. Blancafort


13.00 - 13.45 K. Mllen13.45 - 13.50 Time to move to parallel session

Labels Polymers & Materials - SACS


13.50 - 14.20 S. Weiss S. Das M. Sauer P. Kamat14.20 - 14.40 E. Ishow A. Parola G. Cosa S. Oesterling14.40 - 15.00 S. Bonacchi J. Hernando U. Alexiev D. Rillema15.00 - 15.20 D. Genovese G. Bergamini V. Biju T. Takizawa15.20 - 15.40 A. Fraix S. Semin C. Steuwe K. Katayama16.00 - 18.30 Social Programme19.30 - 24.00 Conference Dinner - Faculty Club21.30 - 02.00 Student Party - Social Club


XX

Thursday July 25


Plenary session - PDS8.30 - 9.15 G. Scholes9.15 - 9.20 Time to move to parallel session


Basic Photochemistry


9.20 - 9.50 J. Knoester P. Mulvaney T. Brixner D. Vanden Bout

9.50 - 10.10 A. Del Guerzo E. Swietek E. Vautney M. Vacha10.10 - 10.40 Coffee/Tea break




10.40 - 12.00 L. Johnson A. Kuznetsov N. Tamai J. Vogelsang10.40 - 12.00 J. Xu I. Leray Y. Kobayashi S. Habuchi10.40 - 12.00 C. Lincheneau O. Wenger H. Ghosh H. Aoki10.40 - 12.00 M. Zhu M. Sikorski A. Huijser I. Scheblykin


13.25 - 14.10 P. Blom14.10 - 14.20 Time to move to parallel session




14.20 - 14.50 K. Yoon J. Abe D. Zhong A. Brolo14.50 - 15.10 A. Neubauer J. Micheau S. Meech J. Sobek15.10 - 15.30 K. Feng M. Pietrzak M. Drobizhev G. Jung15.30 - 15.50 K. Gajda-

SchrantzG. Fukuhara J. Van Thor F. Koberling

15.50 - 16.10 J. Rong N. Basaric H. Tan J. Yang16.10 - 16.40 Coffee/Tea break




16.40 - 17.00 H. Inoue S. Nonell K. Iwata C. Landes17.00 - 17.20 T. Ohno S. Varghese M. Sliwa P. Paulo17.20 - 17.40 F. Ronzani A. Igau B. Carlotti J. Lee17.40 - 18.00 Y. Zhao M. Kruk S. Haacke R. Jaffiol18.00 - 22.00 Beer Tapping Course (first 100 paying registrants)


XXI

Friday July 26


Plenary session - PDS8.30 - 9.15 C. Tung9.15 - 9.20 Time to move to parallel session




9.20 - 9.50 D. Bassani S. Kobatake Y. Lee D. Guldi9.50 - 10.10 K. Ghiggino L. Hou D. Kim C. Bohne10.10 - 10.40 Coffee/Tea break




10.40 - 11.00 I. Chen A. Tatikolov Z. Meng C. Lambert11.00 - 11.20 S. Sun A. Chizhik K. Kamada N.

McClenaghan11.20 - 11.40 L. Peteanu N. Pizarro M. Gilbert T. Kawai11.40 - 12.00 C. Chang A. Hausmann J. Urbanek C. Butchosa12.05 - 12.20 Closing Remarks by Johan Hofkens - PDS


XXIII

Programme, detailedSunday, July 21

14.00 - 18.00 Arrival and registration 18.00 - 18.15 Opening by Johan Hofkens

PLENARY SESSION - PDS Session chair: J. Hofkens

18.15 - 19.00 Nanoscopy with Focused Light, S. Hell - p.119.00 - 19.45 Excitations in the Dark: Coupling Molecules to the Vacuum Field,

T. Ebbesen - p.220.00 - 22.00 Reception - Jubilee Hall

Monday, July 22PLENARY SESSION - PDS Session chair: S. De Feyter

8.30 - 9.15 Nanoscale Optical Interactions in Precise Assemblies, P. Weiss - p.39.15 - 10.00 Towards nanostructure-enhanced photoenergy conversion in the plasmonic

chemical reaction fi eld, H. Misawa - p.4

10.00 - 10.30 Coffee/Tea break - Time to move to parallel session

PARALLEL SESSIONS Plasmonics & Photonics - PDSSession chair: H. Uji-I

10.30 - 11.00 Fluorescence Enhancement with DNA Origami Nano-Antennas, P. Tinnefeld - p.17

11.00 - 11.20 Energy Transfer Fipping, Fluorescence Tuning And Switching In Dyads And Nanoparticles Bearing A Photochromic Moiety, K. Nakatani - p.57

11.20 - 11.40 Femtosecond Plasmonic Optical Tweezer for DNA, Y. Tsuboi - p.5811.40 - 12.00 Reversible Formation and Manipulation of 2D Closely Packed Assembly of

Fluorescent Polystyrene Nanospheres based on Localized Surface Plasmon, T. Shoji - p.59

Polymers & Materials - MTC-1Session chair: H. Masuhara

10.30 - 11.00 Laser-induced soft nano-structures in binary liquid mixtures and photochemical reactions therein, H. Fukumura - p.21

11.00 - 11.20 Femtosecond mid-IR laser tailored step-growth polymerization process, K. Heyne - p.81

11.20 - 11.40 Miniemulsion photopolymerization: evaluation of the effi ciency of light absorption by spectroscopic techniques and actinometry, M. Penconi - p.82

11.40 - 12.00 Photochemical synthesis of gold nanoparticles in dynamic and static solution of water and butoxyethanol; the mechanism studied by transient absorption, S. Kajimoto - p.83


XXIV

Biology - MTC-2Session chair: H. Mizuno

10.30 - 11.00 Fluorescent imaging of ion-concentrations in living cells - from genetically encoded sensors to fluorescence lifetime imaging, T. Gensch - p.27

11.00 - 11.20 New Responsive Fluorescent Nucleosides for Studying DNA and RNA Biology, Y. Tor - p.111

11.20 - 11.40 Monitoring flip-flop behavior of labels in cell membranes using combined two-photon fluorescence and second-harmonic generation microscopy, E. De Meulenaere - p.112

11.40 - 12.00 Novel Luciferin Probes for In Vivo Imaging of Living Animals with Quenched Bioluminescence based on Intramolecular Electron Transfer, Y. Urano - p.113

Novel developments - MTC-3Session chair: M. Ameloot

10.30 - 11.00 Enhancing two-photon excitation/absorption approach by coupling to individual molecule localization and optical nanoscopy methods, A. Diaspro - p.31

11.00 - 11.20 Pulsed interleaved excitation fluctuation imaging, J. Hendrix - p.13511.20 - 11.40 Stochastic Optical Fluctuation Imaging of GABA-B neurotransmitter receptors

in hippocampal neurons, A. Huss - p.13611.40 - 12.00 Using Two Dimensional Polarization as a New Contrast for Fluorescence

Imaging of Bulk Samples, R. Camacho - p.137

12.00 - 13.25 Lunch break

PLENARY SESSION - PDSSession chair: H. Mizuno

13.25 -14.10 Cruising inside X, A. Miyawaki - p.5

14.10 - 14.20 Time to move to parallel session

PARALEL SESSIONSPlasmonics & Photonics - PDSSession chair: P. Tinnefeld

14.20 - 14.50 Plasmon Waveguiding in Nanowires and Nanoparticle Chains, S. Link - p.18

14.50 - 15.10 Optical control and visualization of plasmonic fields by scanning near-field optical microscopy, K. Imura - p.60

15.10 - 15.30 Multipolar Dark-Mode Plasmon Excitation with Laguerre-Gaussian Beams, K. Sasaki - p.61

15.30 - 15.50 Analytical determination of metal nanoparticle dimensions by the extinction spectrum, E. Mencarelli - p.62

15.50 - 16.10 Direct 3D patterning of Au nanoparticle-based microstructures, I. Izquierdo - p.63

16.10 - 16.40 Coffee/Tea break


XXV

Session chair: S. Link16.40 - 17.00 Chemical reactivity in nano-scale optical cavities, J. Hutchison - p.6417.00 - 17.20 Photonic-crystal-based platform controlling spontaneous emission from single

molecules, T. Kaji - p.6517.20 - 17.40 Silver Nanowires as Receiving-Radiating Antennas in the Plasmon Enhanced

Up-Conversion Processes, D. Piatkowski - p.6617.40 - 18.00 Harnessing Plasmon-Induced Ionic Noise in Metallic Nanopores,

P. Van Dorpe - p.67

Sustainable Technology - MTC-1Session chair: K. Ghiggino

14.20 - 14.50 Photofunctional dendrimers: from architecture to energy conversion, Y. Li - p.3414.50 - 15.10 The Femto to Millisecond Photodynamics of Squaraine-Based DSSCs with

Iodide and Cobalt Electrolytes, A. Douhal - p.15115.10 - 15.30 Development of new materials for better performing p-type dye-sensitized

solar cells, F. Odobel - p.15215.30 - 15.50 Synthetic analogues of anthocyanins as sensitizers for dye-sensitized solar

cells, F. Pina - p.15315.50 - 16.10 Anthracene-based Sensitizers for Dye-sensitized Solar Cells, J. Lin - p.154


Session chair: A. Jones 16.40 - 17.00 An overview of Luminescent Solar Concentrator. From basic research to

industrial application. A. Alessi - p.15517.00 - 17.20 Linked dye Dyads as efficient converters of red light into chemical energy, C.

Ley - p.15617.20 - 17.40 Molecular Design of Phenothiazine-based Organic Dyes with Bilateral and

Trilateral Conjugation Extensions for Enhanced DSSCs, D. Cao - p.15717.40 - 18.00 Nonvolatile Solvent-Free Molecular Organic Liquids for Facile Luminescence

Tuning, S. Babu - p.158

Biology - MTC-2Session chair: T. Gensch

14.20 - 14.50 Mapping membrane viscosity with molecular rotors, M. Kuimova - p.2814.50 - 15.10 Repair of the (6-4) Photoproduct by DNA Photolyase Requires Two Photons,

P. Plaza - p.11415.10 - 15.30 Extreme active site flexibility of DNA-synthesis flavoenzyme ThyX demon-

strated by ultrafast time-and spectrally resolved fluorescence spectroscopy, M. Vos - p.115

15.30 - 15.50 UVA and UVC induced excited states and damages of DNA, A. Banyasz - p.116

15.50 - 16.10 Excited state dynamics of realistic oligonucleotide models: insights from quantum mechanical calculations, R. Improta - p.117



XXVI

Session chair: E. Yeow16.40 - 17.00 New Antimalarial Peroxides by Photooxygenation Following the Model of

Nature, A. Griesbeck - p.11817.00 - 17.20 Photodynamics of a Porphyrin Derivative in Chemical and Biological Cavities

- Implications on Photodynamic Therapy, B. Cohen - p.11917.20 - 17.40 Computational studies of photoinduced electron transfer in sensory proteins,

T. Domratcheva - p.12017.40 - 18.00 Enzymatic Biosensing based on Laser Nanopolymerization of

o-Phenylenediamine, H. Yoshikawa - p.121

Novel developments - MTC-3Session chair: F. De Schryver

14.20 - 14.50 Electron Microsocopy: more than a Big Magnifying Glass!, G. Van Tendeloo - p.32

14.50 - 15.10 Simultaneous Light And Electron Microscopy: A Novel Tool To Study Electron-Light-Matter Interactions, J. Hoogenboom - p.138

15.10 - 15.30 Confocal Raman Microscopy: True Surface and 3D Raman Imaging, M. Tchaya - p.139

15.30 - 15.50 Scientific CMOS approach to time-resolved and high dynamic range spectroscopy, T. Pieper - p.140

15.50 - 16.10 Photonic Crystal Fibre as an Optofluidic Platform for Photochemistry and Fluorescence Spectroscopy, A. Jones - p.141


Session chair: H. Fukumura16.40 - 17.00 Spatiotemporally controlled single crystal formation of amino acid by

combining femtosecond and CW laser trapping, A. Miura - p.14217.00 - 17.20 A microfluidic approach for the study of biomolecular relaxation by

picosecond fluorescence spectroscopy, S. Maillot - p.14317.20 - 17.40 Development of fluorescent probes for super-resolution imaging based on

intramolecular spirocyclization, S. Uno - p.14417.40 - 18.00 Localized photochemical reactions attained by using the radiation pressure

of near-infrared laser light, S. Ito - p.145

18.00 - 21.00 POSTER SESSION Fully catered, theme: Belgian Night - University Halls

Tuesday, July 23PLENARY SESSION - PDSSession chair: J. Waluk

8.30 - 9.15 Quantum spintronics and sensing with diamond spins, J. Wrachtrup - p.69.15 - 10.00 Femtosecond All-Optical Magnetic Control at the Nanoscale, T. Rasing -

p.7


XXVII


PARALLEL SESSIONS Plasmonics & Photonics - PDSSession chair: K. Sasaki

10.30 - 11.00 Tailoring Nanometals for Surface Enhanced Raman Scattering, L. Liz-Marzn - p.19

11.00 - 11.20 Plasmonic Gold Nanoslit Fluidics: Properties and Applications, C. Chen - p.68

11.20 - 11.40 Surface-enhanced photoinduced charge transfer processes in metal-molecule nanoclusters, S. Centeno - p.69

11.40 - 12.00 Observation of strong coupling between localized surface plasmon and molecule exciton using surface-enhanced Raman scattering, K. Murakoshi - p.70

Polymers & Materials - MTC-1Session chair: D. Herten

10.30 - 11.00 Chemistry at the Single-Molecule and -Particle Level, S. Blum - p.2211.00 - 11.20 Quantitative Super-resolution Chemical Imaging of Brnsted Acidity in Micro-

and Mesoporous ZSM-5 Zeolite Crystals, Z. Ristanovic - p.8411.20 - 11.40 Not only for biologists: super-resolution microscopy unveils hidden features

of synthetic self-assembled structures, L. Albertazzi - p.8511.40 - 12.00 An entangled metal-organic framework as a luminescent sensor,

S. Furukawa - p.86

Biology - MTC-2Session chair: T. Gensch

10.30 - 11.00 Singlet Oxygen in Biology: You Cant Always Get What You Want!, P. Ogilby - p.29

11.00 - 11.20 Singlet oxygen generation by the genetically-encoded tag miniSOG, C. Flors - p.122

11.20 - 11.40 Sensitive Time-Correlated Single Photon Counting Enables Efficient Singlet Oxygen Detection, F. Koberling - p.123

11.40 - 12.00 Organelle-specific cellular oxygen probes based on modified iridium complexes, S. Tobita - p.124

Novel developments - MTC-3Session chair: G. Cosa

10.30 - 11.00 Making the Molecular Movie: The Chemists Gedanken Experiment Enters the Lab Frame, R. Miller - p.33

11.00 - 11.20 A Novel Pump-Probe Set-Up to Monitor Photochemistry Using Extreme UV Light, J. Grilj - p.146

11.20 - 11.40 Ultrafast optical microscopy of multiscale energy flow in solar energy harvesting, L. Huang - p.147

11.40 - 12.00 Ultrafast Light Scattering Microspectroscopic studies on Single Organic Microcrystals, Y. Ishibashi - p.148


XXVIII


PLENARY SESSION - PDSSession chair: M. Roeffaers

13.25 -14.10 Hard and Soft Luminescent Materials. Properties and Applications, L. De Cola - p.8

PARALLEL SESSIONS Plasmonics & Photonics - PDSSession chair: H. Misawa

14.20 - 14.50 Effects of Metal Nanoparticles on The Deactivation Paths of Luminescent Materials, L. Latterini - p.20

14.50 - 15.10 Distance-dependent fluorescence in metal-dye core-shell systems, T. Lerond - p.71

15.10 - 15.30 Photon antibunching of single colloidal quantum dots coupled to metal nanoparticles, S. Masuo - p.72

15.30 - 15.50 Substrate-Dependent Temperature Response of Single Gold Nanoparticles under CW-laser Excitation as Observed by Rayleigh Light-Scattering Spectroscopy, K. Setoura - p.73

15.50 - 16.10 Strategies for Nanofabrication by Optothermal Manipulation of Gold Nanoparticles, T. Lohmller - p.74


Session chair: K. Murakoshi16.40 - 17.00 Core-shell Silver Nanoparticles Assisted the Performance of Inverted Type

Polythiophene-fullerene Thin Film Solar Cells, J. You - p.7517.00 - 17.20 Plasmon-enhanced Photocatalytic Activities of Semiconductor Nanoparticles

Immobilized on SiO2-coated Au Particles, T. Torimoto - p.7617.20 - 17.40 Photoelectrochemical Properties of Titanium Oxide-coated Gold Nanorods,

Y. Takahashi - p.7717.40 - 18.00 An optical fibre sensor based on surface plasmon resonance - a laboratory

tool for determining the cleaning efficiency of surfactants, H. Pfeiffer - p.78

Polymers & Materials: SACS - MTC-1Session chair: M. Roeffaers

14.20 - 14.50 Surface Enhanced Raman Spectroscopy for Catalysis Research, B. Weckhuysen - p.23

14.50 - 15.10 Optical Properties Tuning by Dye Inclusion into 1D-Aluminophosphates with different Pore Size, V. Martinez-Martinez - p.87

15.10 - 15.30 Spatiotemporally controlled release of nitric oxide from porous coordination polymers, S. Diring - p.88

15.30 - 15.50 Blinking of dye doped polymer nanoparticles: collective behavior due to ultrafast energy transfer, A. Klymchencko - p.89

15.50 - 16.10 White fluorescence from core-shell silica nanoparticles, C. Allain - p.90


XXIX


Session chair: S. Furukawa16.40 - 17.00 Thermal and Photoinduced Liquid Crystalline Phase Transitions with a Rod-

disc Alternative Change in the Molecular Shape, K. Uchida - p.9117.00 - 17.20 X-ray excitable luminescent polymer dots doped with iridium(III) complex, Y.

Osakada - p.9217.20 - 17.40 Optical Trapping with Laser Pulses: The Next Generation in Optical

Nanomanipulation, A. Usman - p.9317.40 - 18.00 Microneedle-loaded sensors for the non-invasive determination of blood

analyte concentrations, G. Hamilton - p.94

Biology - MTC-2Session chair: A. Griesbeck

14.20 - 14.50 Combating bacteria using light: from planktonic cells to swarming bacteria, E.Yeow - p.30

14.50 - 15.10 Fluorescent Nano-objects For Bioimaging Applications : E.coli chromosome dynamics, R. Meallet-Renault - p.125

15.10 - 15.30 New Molecular Switches for Photoinduced Control of Neuronal Signaling with NIR Light, M. Gascon - p.126

15.30 - 15.50 Widely accessible method for superresolution fluorescence imaging of living systems, P. Dedecker - p. 127

15.50 - 16.10 Photosynthesis Exploits Quantum Coherence for Efficient Solar Energy Conversion, E. Romero - p.128


Session chair: C. Flors16.40 - 17.00 Revising a Paradigm: Flavin Acts as a Red Light Sensor in an Animal-Like

Cryptochrome, T. Kottke - p.12917.00 - 17.20 Development of a robust model system of FRET within DNA duplex,

H. Kashida - p.13017.20 - 17.40 The wavelength-dependent photocycle efficiency of bacteriorhodopsin

at different pH, L. Chu - p.13117.40 - 18.00 Photochemistry of kynurenic acid and kynurenine yellow - products of

decomposition of eye lens UV filters, E. Zeletsova - p.132

Inorganic & Theoretical - MTC-3Session chair: A. Kirsch

14.20 - 14.50 New Probes for Signalling and Sensing with Luminescent Chiral Lanthanide Complexes, D. Parker - p.37

14.50 - 15.10 New Ir(III) complexes as labels in electrochemiluminescent (ECL) immunoassays, E. Longhi - p.175

15.10 - 15.30 Long-lived Room-Temperature Luminescence of Ruthenium(II) Complexes Based on Tridentate Polypyridine Ligands, S. Denisov - p.176


XXX

15.30 - 15.50 Ruthenium(II)-Arene Complexes with Strong Fluorescence, X. Zhou - p.17715.50 - 16.10 Reduction of Yb(III) to Yb(II) by Resonant Two-Color Two-Photon Nanosecond

and by Non-Resonant Femtosecond Pulse Excitations, N. Nakashima - p.178


Session chair: P. Kamat16.40 - 17.00 Switching dendrimer luminescence by metal ion coordination, P. Ceroni -

p.17917.00 - 17.20 Photochromic or Photoluminescent Inorganic Pigments by Chalcogen

Confinement on Zeolite 4A Cavities, C. Laia - p.18017.20 - 17.40 Test strip-based fluorescence detection of fluoride in aqueous media with a

BODIPY-linked hydrogen bonding receptor, P. Ashokkumar - p.18117.40 - 18.00 The fascinating photochemistry of iron-III azido complexes: A sound time-

resolved FTIR study, J. Torres-Alacan - p.182

18.00 - 21.00 POSTER SESSION Fully catered, theme: BBQ Night - University Halls

Wednesday, July 24PLENARY SESSION - PDSSession chair: J. Hofkens

8.30 - 9.15 Actively Controlled Single-Molecule Emitters Enable 3D Super-Resolution Imaging in Cells, W.E. Moerner - p.9


PARALLEL SESSIONS Labels - PDSSession chair: P. Dedecker

9.20 - 9.50 Phototransformable fluorescent proteins: a mechanistic view, D. Bourgeois - p.40

9.50 - 10.10 Applications of silver nanocluster emitters, T. Vosch - p.195


Session chair: P. Dedecker10.40 - 11.00 Visible Light-Sensitive APTES-bound ZnO Nanowire Waveguide toward A

Potent Nanoinjector Sensing Biomolecules in a Living Cell, M. Yoon - p.19611.00 - 11.20 Fluorescence imaging of contacts and forces, F. Brouwer - p.19711.20 - 11.40 Fluorescent Probe for Rapid Detection of Fluoride Anion with Excited State

Intramolecular Proton Transfer Compound and Hydrogel, G. Yang - p.19811.40 - 12.00 Applications of the first fluorescent nucleic acid base analogue FRET-pair, A.

Dierckx - p.199


XXXI

Basic Photochemistry - MTC-1Session chair: M. Van der Auweraer

9.20 - 9.50 Controlling Chemical and Biochemical Reactivity Using Light, Molecular Switches and Nanoparticles, N. Branda - p.42

9.50 - 10.10 Metallofullerene Electron Donors - Efficient Spin Flip in Linear Electron Donor Acceptor Conjugates, M. Rudolf - p.207


Session chair: M. Van der Auweraer10.40 - 11.00 Supramolecular photoactive systems based on crown-containing

oligothiophene derivatives, O. Federova - p.20811.00 - 11.20 Interplay between adiabatic ring opening and ultrafast electron transfer in

bichromophoric white fluorophores, J. Karpiuk - p.20911.20 - 11.40 Interplay between exciplex and complete charge separated state in electron

transfer reaction: A quantitative study, N. Tkachenko - p.21011.40 - 12.00 Driving Force Dependence of Charge Recombination in Reactive and

Nonreactive Solvents, G. Angulo - p.211

Single Molecule - MTC-2Session chair: M. Sauer

9.20 - 9.50 Optical spectroscopy with single gold nanoparticles, M. Orrit - p.469.50 - 10.10 A FRET Dyad for Single Molecule Fluorescence Spectroscopy and

Microscopy, D. Wll - p.233


Session chair: M. Sauer10.40 - 11.00 Lonesome photons and switching reactions to improve vision and counting in

fluorescence microscopy, D. Herten - p.23411.00 - 11.20 Ultrastable organic fluorophores for single-molecule and super-resolution

microscopy via proximity of single oxidizing and reducing compounds, T. Cordes - p.235

11.20 - 11.40 Improved Super-Resolution Microscopy with Oxazine Fluorophores in Heavy Water, A. Frstenberg - p.236

11.40 - 12.00 Fluorescent Electrochemistry: Towards controlled redox-switching of a single protein, T. Aartsma - p.237

Inorganic & Theoretical - MTC-3Session chair: D. Parker

9.20 - 9.50 Colloidal Photonic Crystals with New Symmetries, K. Song - p.389.50 - 10.10 Substituent Effects on the Photoisomerisation of Azobenzene, J. Gamez -

p.183



XXXII

Session chair: D. Parker10.40 - 11.00 The Molecular Mechanism of Photochromism in Photo-Enolizable Quinoline

and Napthyridine Derivatives, S. Knippenberg - p.18411.00 - 11.20 Ultrafast emission quenching in perylene diimides by structure rearrangement

induced electron transfer from their substituents, P. Klle - p.18511.20 - 11.40 Spectral and Transport Parameters of Electron-Transporting Material Bis(10-

hydroxybenzo[h]qinolinato)beryllium (Bebq2), E. Freidzon - p.18611.40 - 12.00 Photochemistry and Photophysics of the Amino and Imino Tautomers of

1-Methylcytosine: Tautomerisation as a Side Product of the Radiationless Decay, L. Blancafort - p.187


PLENARY SESSION - PDSSession chair: F. De Schryver

13.00 - 13.45 New Chromophores by Design, K. Mllen - p.10

PARALLEL SESSIONS Labels - PSDSession chair: L. Latterini

13.50 - 14.20 Voltage sensing inorganic nanoparticles, S. Weiss - p.4114.20 - 14.40 Fluorescent Chelating Organic Nanoparticles: a Reverse Approach for High-

loaded Bimodal Hybrid Materials for Bioimaging, E. Ishow - p.20014.40 - 15.00 Overcoming self-quenching phenomena with a strategy based on energy

transfer processes, S. Bonacchi - p.20115.00 -15.20 Versatile fluorescent probes: photoswitching bright and tunable fluorescent

nanoparticles with fast FRET, D. Genovese - p.20215.20 - 15.40 An Engineered Nanoplatform for Bimodal Anticancer Phototherapy with

Dual Color Fluorescence Detection of Sensitizers, A. Fraix - p.203

Polymers & Materials: SACS - MTC-1Session chair: S. De Feyter

13.50 - 14.20 Photoresponsive Materials, S. Das - p.2414.20 - 14.40 Multiresponsive Systems Based On Flavylium-Supported Poly(N-

Isopropylacrylamide), A. Parola - p.9514.40 - 15.00 Design of Multi-stimuli Responsive Fluorescent Switches for the Construction

of Molecular Analogues of Field-Effect Transistors, J. Hernando - p.9615.00 -15.20 Multichromophoric supramolecular systems: metal driven self-assembly from

molecules to mesoscopic objects, G. Bergamini - p.9715.20 - 15.40 Highly Brilliant Luminescent Probes From Self-Assembled Peptide Tubes,

S. Semin - p.98

Single Molecule - MTC-2Session chair: D. Wll

13.50 - 14.20 Fluorescence localization microscopy - the transition from concept to biological research tool, M. Sauer - p.47


XXXIII

14.20 - 14.40 Visualizing the Stepwise Growth and Exploring the Structure and Dynamics of DNA Nano-Architectures via Single Molecule Spectroscopy, G. Cosa - p.238

14.40 - 15.00 Nanostructures and drug distribution within Nanostructured Lipid Carriers (NLC) investigated by super-resolution fluorescence microscopy, U. Alexiev - p.239

15.00 -15.20 Photoresponsive nanomaterials for bioimaging, V. Biju - p.24015.20 - 15.40 High resolution imaging of plasmonic hotspots with single molecule

localisation superresolution microscopy, C. Steuwe - p.241

Inorganic & Theoretical - MTC-3Session chair: H. Fukumura

13.50 - 14.20 Manipulation Of Photoinduced Charge Transfer Processes In Quantum Dot Solar Cells, P. Kamat - p.39

14.20 - 14.40 Quantumchemical studies and non-adiabatic on-the-fly dynamics on furan, furfural and -furfural, S. Oesterling - p.188

14.40 - 15.00 Linear Free Energy Relationships in Platinum(II) Biphenyl Heterocyclic Ligand Complexes, D. Rillema - p.189

15.00 -15.20 Enhancement of the red emission caused by the change in occupation site of Mn in CaGa2S4 crystals when codoped with a trivalent rare earth element, T. Takizawa - p.190

15.20 - 15.40 Carrier dynamics in dye or quantum dot sensitized solar cells, K. Katayama - p.191

16.00 - 18.00 SOCIAL PROGRAMME

19.30 - 24.00 CONFERENCE DINNER - Faculty Club

21.30 - 02.00 STUDENT PARTY - Social Club

Thursday, July 25PLENARY SESSION - PDSSession chair: A. Douhal

8.30 - 9.15 Design Principles for light harvesting, G. Scholes - p.11


PARALLEL SESSIONS Polymers & Materials - SACS - PDSSession chair: D. Bassani

9.20 - 9.50 Localization, Dynamics, and Optics of Excitons in Self-Assembled Molecular Nanotubes for Light-Harvesting, J. Knoester - p.25

9.50 - 10.10 Polarized Fluorescence from Individual Nano-Ribbons and Nano-Rods of Self-Assembled Acenes, A. Del Guerzo - p.99



XXXIV

Session chair: D. Bassani10.40 - 11.00 Theory-Aided Design and Simulation of Chromophores for Matrix-Assisted

Poling, L. Johnson - p.10011.00 - 11.20 Supramolecular Micro-/Nano- Wires For Nonlinear Optics, J. Xu - p.10111.20 - 11.40 Synthesis and studies of quantum dot/organic ligand photoactive hybrids for

optoelectronic and sensing applications, C. Lincheneau - p.10211.40 - 12.00 Fluorescence enhancement and quenching of tetraphenylethene-conjugated

fluorophores, M. Zhu - p.103

Basic Photochemistry - MTC-1Session chair: C. Bohne

9.20 - 9.50 Energy Transfer at the Nanoscale - The Power of Distance, P. Mulvaney - p.43

9.50 - 10.10 Redox characterization of semiconductors based on spectroelectrochemical measurements, E. Swietek - p.212


Session chair: C. Bohne10.40 - 11.00 Molecule-like luminescent Ag nanoclusters dispersed within glass host for

Hg-free white light generation, A. Kuznetsov - p.21311.00 - 11.20 Aggregation-Induced Emission Enhancement upon Al3+ Complexation with

Tetrasulfonated Calix[4]bisazacrown Fluorescent Molecular Sensor, I. Leray - p.214

11.20 - 11.40 Proton-Coupled Electron Transfer with Photoexcited Metal Complexes, O. Wenger - p.215

11.40 - 12.00 Tautomerism, protolytic equilibria and electronic structure of flavins and their derivatives in the ground and excited states, M. Sikorski - p.216

Ultrafast - MTC-2Session chair: S. Haacke

9.20 - 9.50 Coherent multidimensional spectroscopy of chemical reactions, T. Brixner - p.50

9.50 - 10.10 Dynamics of bimolecular photoinduced charge separation reactions beyond the diffusion limit: observation of a weak inverted region, E. Vauthey - p.257


Session chair: S. Haacke10.40 - 11.00 Hot Electron Transfer in Au-CdSe Nanorods, N. Tamai - p.25811.00 - 11.20 Probing the Charge Transfer Biexciton Pathway in CdTe/CdSe Core/Shell

Nanocrystals by Two-Dimensional Electronic Spectroscopy, Y. Kobayashi - p.259

11.20 - 11.40 Ultrafast Charge Transfer Dynamics in Quantum Dot Core-Shell, Graded Core-Shell and Quantum Dot Decorated Graphene Surface, H. Ghosh - p.260


XXXV

11.40 - 12.00 Manipulation of electron transfer dynamics in zinc phthalocyanine sensitized TiO2 nanoparticles by modification of the anchoring ligand, A. Huijser - p.261

Single Molecule - MTC-3Session chair: T. Vosch

9.20 - 9.50 Building up Conjugated Polymer Film One Chain at a Time: Single Conjugated Polymer and Aggregate Spectroscopy, D. Vanden Bout - p.48

9.50 - 10.10 Single molecule spectroscopy of conjugated polymers: Green band in EL of polyfluorenes and mechanical control of photophysics in MEH-PPV, M. Vacha - p.242


Session chair: T. Vosch10.40 - 11.00 Dynamic exciton localisation and spontaneous symmetry breaking revealed

in model systems of conjugated polymer materials, J. Vogelsang - p.24311.00 - 11.20 A single-molecule study on polymer diffusion in a semi-dilute solution and in

a melt: effects of chain topology, S. Habuchi - p.24411.20 - 11.40 Conformation of Single Polymer Chain Studied by Super-resolution

Fluorescence Microscopy, H. Aoki - p.24511.40 - 12.00 Spectroscopy of single macromolecules and molecular aggregates,

I. Scheblykin - p.246


PLENARY SESSION - PDSSession chair: F. De Schryver

13.25 - 14.10 Charge transport and recombination in organic semiconductors, P. Blom - p.12

PARALLEL SESSIONS Sustainable technology - PDSSession chair: H. Miyasaka

14.20 - 14.50 Role of Charge Transfer Interaction in Photocatalytic Conversion of Small Alco-hols to Useful Compounds and Generation of Solar Fuels, K. Yoon - p.35

14.50 - 15.10 Time-resolved Spectroscopy of a Photocatalytic System for Hydrogen Generation Based on Iridium Photosensitizers, A. Neubauer - p.159

15.10 - 15.30 Water-soluble graphene nanocomposites: facile preparation with enhanced activity for photocatalytic hydrogen evolution, K. Feng - p.160

15.30 -15.50 Photo-electrochemical hydrogen generation using protein functionalized hematite photoanode, K. Gajda-Schrantz - p.161

15.50 - 16.10 Minimizing charge carrier losses in photoelectrochemical water splitting, J. Rong - p.162



XXXVI

Session chair: Y. Tsuboi16.40 - 17.00 A Key-step for Artificial Photosynthesis: How can we do an oxidative

activation of water by visible light?, H. Inoue - p.16317.00 - 17.20 Photoreduction of CO2 over brookite TiO2 and nanocomposite of g-C3N4

and WO3 under wide range of light irradiation, T. Ohno - p.16417.20 - 17.40 Visible-light photosensitized oxidation of -terpinene using original

silica-supported sensitizers: photooxygenation vs photodehydrogenation, F. Ronzani - p.165

17.40 - 18.00 1D Multi-Structured Micro/nanomaterials with Improved Catalytic Performance, Y. Zhao - p.166

Basic Photochemistry - MTC-1Session chair: F. Brouwer

14.20 - 14.50 Unusual Negative Photochromism of Biaryl-bridged Imidazole Dimer, J. Abe - p.44

14.50 - 15.10 A Janus-like kinetic network in the Cu(II) induced cycloreversion of a dithienylethene photochromic system, J. Micheau - p.217

15.10 - 15.30 Photochromism of -Thioxoketones Investigated by Various Methods Including NMR Spectroscopy, M. Pietrzak - p.218

15.30 -15.50 Ultimate Stereocontrol of Photocyclodimerization of 2-Anthracenecarboxylates on Poly- and Oligo-saccharide Scaffolds, G. Fukuhara - p.219

15.50 - 16.10 Quinone methides in the photodehydration of 2-hydroxy-3-(hydroxymethyl)anthracenes, N. Basaric - p.220


Session chair: B. Cohen16.40 - 17.00 Dual Fluorescence in 9-Substituted Porphycenes, S. Nonell - p.22117.00 - 17.20 Stimulated Emission Process in the Single Crystals of p-Conjugated Materials,

S. Varghese - p.22217.20 - 17.40 Phosphorus ligands make the difference ! Combined experimental and

theoretical study on long lived room temperature luminescence of ruthenium complexes, A. Igau - p.223

17.40 - 18.00 Optical features of free base mesotriarylcorroles, M. Kruk - p.224

Ultrafast - MTC-2Session chair: P. Dedecker

14.20 - 14.50 Ultrafast Electron Transfer in Proteins, D. Zhong - p.5114.50 - 15.10 Ultrafast Dynamics in Fluorescent Proteins, S. Meech - p.26215.10 - 15.30 Mechanisms of femtosecond multiphoton bleaching of red fluorescent

proteins, M. Drobizhev - p.26315.30 -15.50 Proton transfer and photoswitching in Fluorescent Proteins, J. Van Thor -

p.26415.50 - 16.10 Fifth order three-dimensional electronic spectroscopy and its applications to

the study of photosynthetic light harvesting processes, H. Tan - p.265


XXXVII


Session chair: P. Dedecker16.40 - 17.00 Absorption Anisotropy of Photocarriers in Rutile and Anatase TiO2 Single

Crystals Studied with Femtosecond Time-resolved Near-IR Spectroscopy, K. Iwata - p.266

17.00 - 17.20 Design and photodynamics of an efficient photo-induced charge separation in a stable heteroleptic donor-diimine copper(I)-acceptor triad, M. Sliwa - p.267

17.20 - 17.40 Intramolecular charge transfer in the singlet and triplet manifolds of some dipolar and quadrupolar pyridinium salts, B. Carlotti - p.268

17.40 - 18.00 Ultrafast Spectrosocopy of New Donor-Acceptor Organic Molecules for Photovoltaic Applications: Effects of the Electronic Gradient Strength and Length, S. Haacke - p.269

Single Molecule - MTC-3Session chair: M. Orrit

14.20 - 14.50 What is New in Single Molecule Surface-Enhanced Raman Scattering?, A. Brolo - p.49

14.50 - 15.10 Single molecule interactions studied by using zero-mode waveguide nanostructures. A comparison with surface plasmon resonance, J. Sobek - p.247

15.10 - 15.30 Fluorescent and Photochemically-active Dyes for Single-Molecule Chemistry, G. Jung - p.248

15.30 -15.50 Fluorescence Lifetime Correlation Spectroscopy (FLCS): A Powerful Tool to Improve Diffusion, Concentration and Interaction Measurements, F. Koberling - p.249

15.50 - 16.10 Single-Molecule Photophysical Properties of pi-Expanded Macrocyclic Oligothiophenes, J. Yang - p.250


Session chair: S. Habuchi16.40 - 17.00 Overcoming signal intermittency in short particle tracking trajectories,

C. Landes - p.25117.00 - 17.20 Fluorescent Dendrimers for Single-Molecule Microscopy and Its Application

to Study Charged Dendrimer Solutions, P. Paulo - p.25217.20 - 17.40 Structure-Property Relationship of Perylene Bisimide (PBI) Macrocycles

Probed by Atomic Force Microscopy and Single-Molecule Fluorescence Spectroscopy, J. Lee - p.253

17.40 - 18.00 Multi-photon Cascade Absorption in Single Molecule Fluorescence Saturation Spectroscopy, R. Jaffiol - p.254

18.30 - 22.00 Beer tapping course


XXXVIII

Friday, July 26PLENARY SESSION - PDSSession chair: H. Masuhara

8.30 - 9.15 Chemical Transformations Initiated by Photoinduced Electron Transfer, C. Tung - p.13


PARALLEL SESSIONS Sustainable technology - PDSSession chair: F. De Schryver

9.20 - 9.50 Energy transfer in organic materials, D. Bassani - p.369.50 - 10.10 Light harvesting and triplet annihilation in Ru(II)-centred star polymers,

K. Ghiggino - p.167


Session chair: F. De Schryver10.40 - 11.00 Ultrafast Energy Transfer in Divinylbiphenyl, Divinylstilbene Copolymers

Bridged by Silylene, I. Chen - p.16811.00 - 11.20 Low-Power Energy Upconversion Through Triplet-Triplet Annihilation, S. Sun

- p.16911.20 - 11.40 Aggregation Effects on the Emission Spectra and Dynamics of Pi-Conjugated

Systems, L. Peteanu - p.17011.40 - 12.00 Excited state dynamics of organic nanostructure with aggregation induced

emission, C. Chang - p.171

Basic Photochemistry - MTC-1Session chair: M. Van der Auweraer

9.20 - 9.50 Rapidly Photoresponsive Molecular Machinery of Photochromic Diarylethene Crystals, S. Kobatake - p.45

9.50 - 10.10 Driving Molecular Motors With Visible Light By Intra- And Intermolecular Energy Transfer From Palladium Porphyrin Triplet Excited States, L. Hou - p.225


Session chair: M. Van der Auweraer10.40 - 11.00 Photonics of polymethine dyes complexed with biomacromolecules,

A. Tatikolov - p.22611.00 - 11.20 Measuring the fluorescence quantum yield in nanoscopic complex systems:

a novel nanocavity-based method, A. Chizhik - p.22711.20 - 11.40 Substituent Effect on the Photolability of 4-Aryl-1,4-Dihydropyridines,

N. Pizarro - p.228


XXXIX

11.40 - 12.00 Laser-Based Stand-Off Detection Of Potentially Hazardous Materials Via Light Induced Fluorescence (Lif), A. Hausmann - p.229

Ultrafast - MTC-2Session chair: M. Sliwa

9.20 - 9.50 Infrared Absorption and Reaction Kinetics of the Criegee Intermediate CH2OO Produced from UV-Irradiated CH2I2 + O2, Y. Lee - p.52

9.50 - 10.10 Exciton Delocalization Processes of Various pi-Expanded Oligothiophenes, D. Kim - p.270


Session chair: M. Sliwa10.40 - 11.00 The Unique Role of Solvent in Ultrafast Relaxation Dynamics of Thiolate-

Protected Au20(SR)16 Clusters, Z. Meng - p.27111.00 - 11.20 Enhanced two-photon absorption of polycyclic aromatic hydrocarbons with

the partial open-shell nature, K. Kamada - p.27211.20 - 11.40 Conformational Dependence of Charge Separation in Long Porphyrin

Oligomer-Fullerene Donor-Acceptor Systems, M. Gilbert - p.27311.40 - 12.00 Multi-photon ionization of liquid-to-supercritical ammonia: The role of

electronic and structural properties of the solvent, J. Urbanek - p.274

Polymers & Materials - MTC-3Session chair: E. Fron

9.20 - 9.50 Toward long-lived charge separation: a mechanistic/kinetic view, D. Guldi - p.26

9.50 - 10.10 Characterization of Bile Salt Gels as Soft Supramolecular Hosts, C. Bohne - p.104


Session chair: E. Fron10.40 - 11.00 Synthesis and Time Resolved Optical Spectroscopy of Polymeric Squaraine

Dyes, C. Lambert - p.10511.00 - 11.20 Biomimetic communication between functional molecules via photocontrolled

ions in polymeric nanodomains, N. McClenaghan - p.10611.20 - 11.40 Characteristic Circularly Polarized Luminescence of Aggregated Molecules

evaluated with Molecular Chirality Microscope, T. Kawai - p.10711.40 - 12.00 Nitrogen containing polymers: structural effects on photochemical properties,

C. Butchosa - p.108

12.05 - 12.20 Closing remarks by Johan Hofkens - PDS


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PLENARY LECTURES



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Nanoscopy with focused light

Stefan Hell

Max Planck Institute for Biophysical Chemistry, NanoBiophotonics, [email protected]

In STED microscopy1, fl uorescent features are switched off by the STED beam, which confi nes the fl uorophores to the ground state everywhere in the focal region except at a subdiffraction area of extent . In RESOLFT microscopy2,3, the principles of STED have been expanded to fl uorescence on-off-switching at low intensities I , by resorting to molecular switching mechanisms that entail low switching thresholds Is. An Is lower by many orders of magnitude is provided by reversibly switching the fl uorophore to a long-lived dark (triplet) state2-4 or between a long-lived fl uorescence activated and deactivated state2,5. These alternative switching mechanisms entail an Is that is several orders of magnitude lower than in STED. In imaging applications, STED/RESOLFT enables fast recordings and the application to living cells, tissues, and even living animals6,7.Starting from the basic principles of nanoscopy we will discuss recent developments8,9 with particular attention to RESOLFT and the recent nanoscale imaging of the brain of living mice7 by STED.

References[1] Hell, S. W. & Wichmann, J. Breaking the diffraction resolution limit by stimulated-emission - stimulated-

emission-depletion fl uorescence microscopy. Opt Lett 19, 780-782, doi:10.1364/OL.19.000780 (1994).[2] Hell, S. W. Toward fl uorescence nanoscopy. Nat Biotechnol 21, 1347-1355 (2003).[3] Hell, S. W., Jakobs, S. & Kastrup, L. Imaging and writing at the nanoscale with focused visible light through

saturable optical transitions. Appl Phys A 77, 859-860 (2003).[4] Hell, S. W. Far-Field Optical Nanoscopy. Science 316, 1153-1158 (2007).[5] Hofmann, M., Eggeling, C., Jakobs, S. & Hell, S. W. Breaking the diffraction barrier in fl uorescence

microscopy at low light intensities by using reversibly photoswitchable proteins. PNAS 102, 17565-17569 (2005).

[6] Rankin, B. R. et al. Nanoscopy in a Living Multicellular Organism Expressing GFP. Biophys J 100, L63 - L65 (2011).

[7] Berning, S., Willig, K. I., Steffens, H., Dibaj, P. & Hell, S. W. Nanoscopy in a Living Mouse Brain. Science 335, 551 (2012).

[8] Grotjohann, T. et al. Diffraction-unlimited all-optical imaging and writing with a photochromic GFP. Nature 478, 204-208 (2011).

[9] Brakemann, T. et al. A reversibly photoswitchable GFP-like protein with fl uorescence excitation decoupled from switching. Nat Biotechnol 29, 942-947 (2011).

Sunday 21/07/2013 18:15-19:00 PDS


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PLENARY

Excitations in the Dark: Coupling Molecules to the Vacuum Field

Thomas Ebbesen

University of Strasbourg, ISIS, [email protected]

Strong coupling of light and matter can give rise to a multitude of exciting physical effects through the formation of hybrid light-matter states. Molecules have been increasingly used for the study of strong coupling since their large transition dipole moment permits the observation of vacuum Rabi splitting in the range of hundreds of meV at room temperature. Such large modifi cations in the energy levels have signifi cant implications for molecular and material sciences as well as physics. After introducing the dynamics and other fundamental issues of strong coupling, examples of the implications for subjects such as photochemistry and material science will be presented.

Sunday 21/07/2013 19:00-19:45 PDS


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Nanoscale Optical Interactions in Precise Assemblies

Paul Weiss

UCLA, CNSI, United States of [email protected]

We use molecular design, tailored syntheses, intermolecular interactions, and selective chemistry to direct molecules into desired positions to create nanostructures with controlled environments and dimensionality, to connect functional molecules to the outside world, and to serve as test structures for measuring single or bundled molecules and assemblies. We have developed and applied new tools based on the scanning tunneling microscope (STM) to measure structure, function, and spectra simultaneously. We are particularly interested in the interactions of photons with precisely assembled structures. Much previous work in this area has been limited by the absorption of light by the STM tip, resulting in heating and making quantitative measurements diffi cult. We have overcome this diffi culty by coupling light evanescently into the tunneling junction using specially prepared substrates and a new set of STMs. The measured results of photoexcitation include photoconductivity and regioselective reaction. We anticipate applying this method to optimize molecules and materials for energy conversion and storage. Related imaging spectroscopies we have developed give access to the cooperative action of assembled molecular motors and the identifi cation and orientations of parts of molecules such as amyloid-forming oligopeptides. Complementary far-fi eld measurements enable statistically signifi cant optical measurements of function, dynamics, and chemical environment. We are now applying the assembly strategies that we have developed for fl at surfaces to curved and faceted substrates while measuring the environment, interactions, and dynamics of molecular probes designed for this purpose.

Monday 22/07/2013 8:30-9:15 PDS


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PLENARY

Towards nanostructure-enhanced photoenergy conversion in the plasmonic

chemical reaction fi eld

Hiroaki Misawa

Hokkaido University, Research Institute for Electronic Science, [email protected]

The interaction between photons and molecules is weak. The probability of interaction between photon and molecule is roughly estimated as low as 10-7 because the focal spot size of visible light (~110-9 cm2) is 107 times larger than the general molecular absorption cross-section (~110-16 cm2) due to the relationship between the diffraction limit of the light and the molecular size. Thus far, the number of excited-state molecules has been increased by photon density using a laser as an excitation source, although there is a loss of energy since the probability of interaction does not change. We have recently found that metallic nanostructures exhibiting localized plasmon resonance are promising in the photochemical reaction fi eld, which make it possible to increase the interaction between photons and molecules. As one of the most important achievements, we have observed signifi cant photopolymerization via two-photon absorption in photoinitiator molecules of negative photoresists in the nanogaps of closely spaced gold nanoparticles irradiated by a weak incoherent light source [1]. The key technology and outstanding feature of our photochemical reaction fi elds is the fabrication of nanogap metallic nanostructures with nanometric accuracy and use of the localization of electromagnetic waves within nanogaps. Near-fi eld enhancement effects localized on nanogap gold structures were studied by two-photon photoluminescence from gold [2], surface-enhanced Raman scattering [3] and plasmon-enhanced photochemical reactions [4,5]. Thus, gold nanostructures are useful in photochemical reaction fi elds, which make it possible to promote strong coupling between photons and molecules with the aim of effectively using photons. From this standpoint, we have recently demonstrated plasmonic photoelectric conversion from visible to near-infrared wavelengths using electrodes in which gold nanorods are arrayed on TiO2 single-crystal and photocatalytic water splitting [6,7].

References[1] K. Ueno, H. Misawa et al. J. Am. Chem. Soc. 2008, 130, 6928.[2] K. Ueno, H. Misawa et al. Adv. Mater. 2008, 20, 26.[3] Y. Yokota, K. Ueno, H. Misawa, Chem. Commun. 2011, 3505.[4] K. Ueno, H. Misawa et al. J. Phys. Chem. Lett. 2010, 1, 657.[5] B. Wu, K. Ueno, H. Misawa et al. J. Phys. Chem. Lett. 2012, 3, 1443.[6] Y. Nishijima, K. Ueno, H. Misawa et al. J. Phys. Chem. Lett. 2010, 1, 2031.[7] Y. Nishijima, K. Ueno, H. Misawa et al. J. Phys. Chem. Lett. 2012, 3, 1248.

Monday 22/07/2013 9:15-10:00 PDS


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Cruising inside X

Atsushi Miyawaki

RIKEN Brain Science Institute, [email protected]

The behavior of biochemical molecules moving around in cells makes me think of a school of whales wandering in the ocean, captured by the Argus system on the artifi cial satellite. When bringing a whale back into the sea; with a transmitter on its dorsal fi n, every staff member hopes that it will return safely to a school of its species. A transmitter is now minute in size, but it was not this way before. There used to be some concern that a whale fi tted with a transmitter could be given the cold shoulder and thus ostracized by other whales for wearing something annoying. How is whales wandering related to the tide or a shoal of small fi sh? What kind of interaction is there among different species of whales? We human beings have attempted to fully understand this fellow creature in the sea both during and since the age of whale fi shing.

In a live cell imaging experiment, a fl uorescent probe replaces a transmitter. We label a fl uorescent probe on a specifi c region of a biological molecule and bring it back into a cell. We can then visualize how the biological molecule behaves in response to external stimulation. Since fl uorescence is a physical phenomenon, we can extract various kinds of information by making full use of its characteristics. For example, the excited energy of a fl uorescent molecule donor transfers to an acceptor relative to the distance and orientation between the two fl uorophores. This phenomenon can be used to identify interaction between biological molecules or structural change in biological molecules. Besides, we can apply all other characteristics of fl uorescence, such as polarization, quenching, photobleaching, photoconversion, and photochromism, in experimentation.

Cruising inside cells in a supermicro corps, gliding down in a microtubule like a roller coaster, pushing our ways through a jungle of chromatin while hoisting a fl ag of nuclear localization signal, we are reminded to retain a playful and adventurous perspective at all times. What matters is mobilizing all capabilities of science and giving full play to our imagination. We believe that such serendipitous fi ndings can arise out of such a sportive mind, a frame of mind that prevails when enjoying whale-watching.

Monday 22/07/2013 13:25-14:10 PDS


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PLENARY

Quantum spintronics and sensing with diamond spins

J. Wrachtrup

University of Stuttgart, 3rd Institute of Physics and Research Center SCoPE, [email protected]_stuttgart.de

Condensed matter physicists strive for engineering quantum states with a precision formally only reached in atom or quantum optics. However, usually the many degrees of freedom in solids hamper any fine control. Since a few years a number of attempts have been successful to fabricate solid state systems which allow high precision control of quantum states as well as the engineering of complex quantum states. Among those systems are defects in diamond. By implantation of atomic impurities single defect centers can be created with high spatial accuracy. Those defects show quasi atomic states which can be electron paramagnetic, being effectively shielded by the diamond lattice from environmental disturbances. Precise implantation allows mutual coupling of defects and the generation of two or multiple particle state. Quantum non-demolition and feedback algorithms give full access to enhanced quantum state preparation and measurement methodology. Since diamond defects can be operated in the quantum regime at ambient conditions all those methods can be applied to sensing applications. As an example diamond defects are very sensitive detectors for external magnetic fields. Eventually this is of use for e.g. measuring small magnetic fields of single electron or even proton spins in complex environments in e.g. biological media.

Tuesday 23/07/2013 8:30-9:15 PDS


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Femtosecond All-Optical Magnetic Control at the Nanoscale

Theo Rasing

Radbound University, Institute for Molecules and Materials, [email protected]

From the discovery of sub-picosecond demagnetization over a decade ago to the recent demonstration of magnetization reversal by a single 40 femtosecond laser pulse, the manipulation of spins by ultra short laser pulses has become a fundamentally challenging topic with a potentially high impact for future spintronics, data storage and manipulation and quantum computation. Theoretically, this fi eld is still in its infancy, using phenomenological descriptions of the none-equilibrium dynamics between electrons, spins and phonons. A proper description should include the time dependence of the exchange interaction and nucleation phenomena on the nanometer length scale. A practical challenge is how to bring the optical manipulation of magnetic media to the required nanoscale, which may be possible using plasmonic or wave-shaping techniques. In this lecture recent results to probe and control magnetic order on the nanoscale will be discussed.

References[1] A.Kirilyuk, et al, Rev. Mod.Phys. 82, 2731-2784 (2010)[2] I.Radu et al, Nature 472, 205 (2011)[3] J. Mentink et al, Phys.Rev.Lett.108,057202(2012)[4] T. Ostler et al, Nature Comm. 3, 666 (2012)[5] A.R.Khorsand et al, Phys.Rev.Lett.108, 127205 (2012)[6] C. Graves et al, Nature Materials12, 293 (2013)

Demonstration of magnetic domain switching by unpolarized laser pulses (T.Ostler et al)

Tuesday 23/07/2013 9:15-10:00 PDS


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Hard and soft luminescent materials. Properties and applications

Luisa De Cola, Mauro Matteo, Noviyan Darmavan, Eko Prasetyanto

University of Strasbourg, ISIS, [email protected]

The creation of nano/microstructures based on molecular components possessing defined functionalities is a very fascinating field at the cross point of different disciplines. Our effort, in this talk, focuses on the assembly of functional molecules to form crystalline or soft materials [1,2]. These molecules are able to emit light and their emission can be modulated upon the formation of the assembly, or by the interaction of the materials with other systems. The assembly can therefore be used to probe the environment or can constitute the materials for electroluminescent devices. In particular the possibility to modulate the photophysical properties by controlling the aggregation and the intermolecular interactions between the components is a very fascinating approach to obtain new materials such as fibers or luminescent gels or piezochromic materials [2]. Finally prefabricated scaffold based on silica will be discussed and their use as nanocontainers disussed. Microporous and mesoporous materials have been prepared in different sizes and aspect ratio and functionalized using biomolecules or functional groups. Their manipulation using light [3] or chemical functionalities will be illustrated, showing how such nanocontainers are modular and versatile building blocks for complex functions.

References[1] M. Mauro, L. De Cola et al. Angew. Chemie Int. Ed., 2010, 49, 1222.[2] C. A. Strassert, L. De Cola et al. Angew. Chem. Int. Ed., 2011, 50, 946.[3] L. De Cola, C. Denz et al. Adv. Mat., 2012, 24, 5199; Adv. Mat., 2010, 22, 4176-4179

Tuesday 23/07/2013 13:25-14:10 PDS


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Actively Controlled Single-Molecule Emitters Enable 3D Super-Resolution Imaging in Cells

W.E. Moerner

Stanford University, Chemistry, United States of [email protected]

Using the fact that light acts at a distance with little perturbation, single-molecule fl uorescence imaging has enabled a wide array of biophysical measurements in cells. In particular, the single-molecule emitter can also act as a nanoscale light source which yields enhanced spatial resolution beyond the diffraction limit when combined with active control of the single emitters. Using the native photoinduced blinking and switching of enhanced yellow fl uorescent protein (Dickson et al., Nature (1997)) we can achieve sub-40 nm super-resolution imaging of a variety of protein structures in the bacterium Caulobacter crescentus. With a fl uorescently-labeled toxin, the locations of voltage-gated sodium channels on the surface of neuronal cells can be observed in near-real time. Even enzymatic control of emission by nitroreductase can be used to turn on dark fl uorgens in cells (Lee et al., Chemical Science (2012)). In terms of methods, our scheme for 3D imaging based on a double-helix point spread function (DH-PSF) enables quantitative tracking of single mRNA particles in living yeast cells with 15 ms time resolution and 25-50 nm spatial precision (Thompson et al., PNAS (2010)), and this approach has been used to defi ne the 3D spatial structure in bacterial (Lew et al., PNAS (2011)) and mammalian cells (Lee et al. Appl. Phys. Lett. (2012)). With polarization-resolved microscopy, the DH-PSF provides a method to reduce localization errors for orientationally fi xed single-molecule labels (Lew and Backlund et al., PNAS (2012)). The examples provided in this talk illustrate some of the frontiers where the power of optics and lasers applied to controllable fl uorescent emitters in the single-molecule regime is yielding new insights into the behavior of complex biological systems.

Wednesday 24/07/2013 8:30-9:15 PDS


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New Chromophores by Design

Klaus Mllen

Max-Planck-Institute, Synthetic Chemistry, [email protected]

Although organic dyes are among the oldest objects of organic synthesis, their importance as colorants and the fascination with color in general remain undiminished. The field of dye chemistry has evolved to include not only synthetic methods, but physical and materials sciences, requiring a commensurate, but continuously fruitful evolution. Recent developments in, both, fundamental science and technology have defined even more urgent needs such as.- control of absorption and emission wavelength of dyes including the NIR-range,- high fluorescence quantum yield and high light fastness,- processability including the creation of supramolecular order.

In addition, chemical functionalization must be possible for controlled attachment to e.g. conjugated polymers (energy transfer), semiconductor surfaces (electron transfer), or biopolymers (tagging). We introduce several new families of dyes derived from the commercial perylenetetracarboxdiimide. The members of these dye series open new avenues for the fabrication of electronic and optoelectronic devices, biolabelling, polymer-morphology studies and laser writing. Of particular importance is their active roles in single molecule spectroscopy for which dendritic multichromophores and organic/inorganic or biosynthetic hybrids are rewarding objects of study. Attention will also be paid to dendritic light harvesting complexes and their comparison with the natural light harvesting complex LH II b.

References Nature Photonics 2009, 3, 654 Chem. Eur. J. 2009, 15, 878 Angew. Chem. Int. Ed. 2010, 49, 9068 Nature 2010, 465, 905 Chem. Rev. 2010, 110, 6817 J. Mater. Chem. 2010, 20, 3814 Macromol. Rapid Commun. 2011, 32, 679 Phys. Chem. Chem. Phys. 2011, 13, 1776 Small 2011, 7 (12), 1629 ChemPhysChem 2012, 13, 923 Dyes and Pigments 2012, 94, 23 J. Am. Chem. Soc. 2012, 134, 2429 Phys. Rev. E, 2013, 87, artnr. 012403.

Wednesday 24/07/2013 13:00-13:45 PDS


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Design Principles for light harvesting

Gregory Scholes

University of Toronto, Department of Chemistry, [email protected]

Photosynthetic light harvesting complexes are sophisticated multichromophoric assemblies used to regulate and concentrate photo-excitations for delivery to reaction centers under wide-ranging incident irradiances [1]. They provide wonderful model systems for the study of energy transfer mechanisms in well-defi ned structures. From those studies, several broad lessons have been learned that were described in a recent article [2]. As concluded in that article, the next step appears to be elucidating how can we write a blueprint to make something based on what we have learned from photosynthetic complexes. Despite the thousands of studies reported on energy transfer, researchers have not really established clear design principles except for the use of an energy gradient. However, most photosynthetic light harvesting complexes do not incorporate a substantial internal energy gradient directing energy fl ow, that is, only one of two chemical types of chromophores are used. I will discuss an example of a light harvesting circuit and describe various examples of energy transfer in light harvesting [3]. Finally, I will report new experiments that show how two-dimensional nonlinear electronic spectroscopy, with femtosecond time resolution, can be performed without femtosecond lasers.

References[1] G. D. Scholes, T. Mirkovic, D. B. Turner, F. Fassioli and A. Buchleitner Energy Environ. Sci. 2012, 5, 9374-

9393.[2] G. D. Scholes, G. R. Fleming, A. Olaya-Castro and R. van Grondelle, Nature Chem. 2011, 3, 763-774.[3] E. E. Ostroumov, R. M. Mulvaney, R. J. Cogdell, and G. D. Scholes, Science, 2013, in press.

Thursday 25/07/2013 8:30-9:15 PDS


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Charge transport and recombination in organic semiconductors

Paul Blom 1, Martijn Kuik 2, Gert-Jan Wetzelaer 2, Herman Nicolai 2

1Max Planck Institute for Polymer Research, Molecular Electronics, Germany2University of Groningen, Molecular Electronics, Nederland

[email protected]

Charge transport and charge recombination are recognized as key ingredients in the performance of polymer light emitting diodes (PLEDs). In the last two decades a large effort has been put on the characterization of the transport of the dominant charge carrier, holes. It has been demonstrated that the hole transport is governed by hopping between localized states, characterized by a mobility that depends on density, electric fi eld and temperature. The strongly reduced electron currents are generally attributed to the immobile trapping of electrons. We observe that in conjugated polymers the electron transport is limited by traps that are Gaussianly distributed in energy within the band gap. Remarkably, we show that the electron trap distribution is identical for a large variety of polymers, hinting at a common origin for electron traps.

Photogenerated current measurements on PLED device structures reveal that next to the known Langevin recombination also trap-assisted recombination is an important recombination channel in PLEDs. The dependence of the open-circuit voltage on light intensity enables us to determine the strength of this process. Numerical modeling of the current-voltage characteristics incorporating both Langevin and trap-assisted recombination yields a correct and consistent description of the PLED, without the traditional correction of the Langevin pre-factor. At low bias voltage the trap-assisted recombination rate is found to be dominant over the free carrier recombination rate. As a result, we show that the ideality factor in the diffusion regime of a bipolar diode is governed by the recombination of trapped electrons with free holes.

Thursday 25/07/2013 13:25-14:10 PDS


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Chemical Transformations Initiated by Photoinduced Electron Transfer

Chen-Ho Tung , Li-Zhu Wu , Bin Chen , Li-Ping Zhang , Ke Feng

Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Key Laboratory of Photochemical Conversion and Optoelectronic Materials, China

[email protected]

Photoinduced electron transfer and the followed chemical transformations continue to be one of the main topics of current interest. To produce solar fuel, we have designed several systems that can promote production of hydrogen from organic or inorganic protic solutions in the presence of sacrifi cial electron donors. The catalysts developed for reducing proton to hydrogen involve [FeFe]-hydrogenase mimics and transition metal nanopartics, and the photosensitizers include transition metal ion complexes, CdTe quantum dots and organic dyes. Effi cient hydrogen production with high catalytic turnover was achieved. In this presentation the photocatalytic processes will be described in detail. In the second part of this presentation we will introduce our efforts in developing synthetically useful chemical transformations via visible-light induced electron transfer. We were successful in reduction of nitrobenzenes to aminobenzenes, smihydrogenation of alkynes, and aerobic cross-dehydr

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