Steady State and Time Resolved Spectroscopic Study of C ... · Steady State and Time Resolved...
7
1 Electronic Supplementary Information Steady State and Time Resolved Spectroscopic Study of C-Dots - MEH- PPV Polymer Nanoparticles Composites † Monoj Kumar Barman, Santanu Bhattacharyya and Amitava Patra * Department of Materials Science, Indian Association for the Cultivation of Science, Kolkata, 700 032, India * Author to whom correspondence should be addressed; electronic mail: [email protected] Phone: (91)-33-2473-4971, Fax: (91)-33-2473-28 Electronic Supplementary Material (ESI) for Physical Chemistry Chemical Physics This journal is © The Owner Societies 2013
Transcript of Steady State and Time Resolved Spectroscopic Study of C ... · Steady State and Time Resolved...
1
Electronic Supplementary Information
Steady State and Time Resolved Spectroscopic Study of C-Dots - MEH-PPV Polymer Nanoparticles Composites†
Monoj Kumar Barman, Santanu Bhattacharyya and Amitava Patra*
Department of Materials Science, Indian Association for the Cultivation of Science,
Kolkata, 700 032, India
*Author to whom correspondence should be addressed; electronic mail: [email protected]
Phone: (91)-33-2473-4971, Fax: (91)-33-2473-28
Electronic Supplementary Material (ESI) for Physical Chemistry Chemical PhysicsThis journal is © The Owner Societies 2013
2
3.1Å
B
Figure S1: SEM image of MEH-PPV polymer nanoparticles.
C)
Figure S2: TEM images of C-dot10 at low resolution (A), at high resolution (B). Particle size
distribution of C-dot10 from DLS (C)
0 10 20 300
5
10
15
Inte
nsity
(%)
Size (d.nm)
Electronic Supplementary Material (ESI) for Physical Chemistry Chemical PhysicsThis journal is © The Owner Societies 2013
3
20 nm
A B
C)
Figure S3: TEM images of C-dot20 at low resolution (A), at high resolution (B). Particle size
distribution of C-dot20 from DLS (C).
Figure S4: Three different C-dots upon UV light irradiation (λex=365 nm)
0 6 12 18 24 300
4
8
Inte
nsity
(%)
Diameter (d.nm)
Electronic Supplementary Material (ESI) for Physical Chemistry Chemical PhysicsThis journal is © The Owner Societies 2013
4
50 nm
A) B)
Figure S5: TEM image (A) and hydrodynamic size distribution (B) of C-dot10-PNP0.1 composite.
0 50 100 150 200 250 300 350 400 450 5000
2
4
6
8
10
12
14
16
Inte
nsity
(%)
Size (d.nm)
Electronic Supplementary Material (ESI) for Physical Chemistry Chemical PhysicsThis journal is © The Owner Societies 2013
5
50 nm
A) B)
Figure S6: TEM image (A) and hydrodynamic size distribution (B) of C-dot20-PNP0.1 composite.
0 50 100 150 200 250 300 350 400 450 5000
2
4
6
8
10
12
14
16
Inte
nsity
(%)
Size (d.nm)
Electronic Supplementary Material (ESI) for Physical Chemistry Chemical PhysicsThis journal is © The Owner Societies 2013
6
Figure S7: Overlap integral between the emission spectra of C-dot and absorption spectra of
PNPs.
Figure S8: PL spectra of C-dot-PNP system at different excitation wavelength
400 500 6000.0
0.5
1.0
Norm
alize
d Ab
s/PL
Inte
nsity
Wavelength (nm)
PL Emission of C-dot Absorption Spectrum of PNP
400 500 600 7000.00
3.50x106
7.00x106
PL In
tens
ity
Wavelength (nm)
C-dot-PNP (λex=370nm) C-dot-PNP (λex=480nm)
Electronic Supplementary Material (ESI) for Physical Chemistry Chemical PhysicsThis journal is © The Owner Societies 2013
7
Figure S9: Comparison PL quenching efficiency of C-dots in presence of different concentration of PNP
for three different batches.
0.02 0.04 0.06 0.08 0.10
0.2
0.4
0.6
C-dot10-PNP
C-dot20-PNP
C-dot30-PNPQ
uenc
hing
Effi
cienc
y
CPNP/CC-dot (in Wt%)
Electronic Supplementary Material (ESI) for Physical Chemistry Chemical PhysicsThis journal is © The Owner Societies 2013
