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www.chemeurj.orgC E U J E D 1 7 ( 3 5 ) 9 5 4 1 – 9 8 4 4 ( 2 0 1 1 ) · I S S N 0 9 4 7 - 6 5 3 9 · V o l . 1 7 · N o . 3 5 · 2 0 1 1

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MinireviewEnergy Up-Conversion by Low-Power Excitation:

New Applications of an Old Concept

P. Ceroni

… hydrogen-atom abstraction andoxygen-atom transfer, two impor-tant elementary steps in manychemical transformations, is pre-sented in the Full Paper by H.Schwarz, X. Zhang et al. onpage 9619 ff. A gas-phase study atatomic level may provide intrinsicinformation for a catalytic system.However, as reminded by GerhardErtl and a Chinese old saying, “abaguette is more than the sum ofits crumbs” or “one cannot appre-ciate the wisdom of a whole gamefrom a single move”.

Chemistry—A EuropeanJournal is jointly owned bythe 14 Chemical Societiesshown above and publishedby Wiley-VCH. This group ofSocieties has bandedtogether as ChemistryPublishing Society(ChemPubSoc) Europe forits combined publishingactivities. The journal is alsosupported by the AsianChemical Editorial Society(ACES).

Single-Molecule MagnetsIn their Communication on page 9605 ff., S. Dehnen,R. Cl�rac et al. describe the synthesis of [MnIII

6O3 ACHTUNGTRENNUNG(saO)6-ACHTUNGTRENNUNG(OCH3)6Ln2ACHTUNGTRENNUNG(CH3OH)4ACHTUNGTRENNUNG(H2O)2] (Ln=La, Tb, saOH2 = sali-cylaldoxime) by a two-step self-assembly process fromMnCl2, saOH2, and Ln ACHTUNGTRENNUNG(NO3)3 under basic conditions inmethanol. Both complexes display single-molecule magnetproperties, with the latter exhibiting one of the highestknown single-molecule-magnet (SMM) energy gaps: 103 K.

Cluster CompoundsIn their Full Paper on page 9612 ff. , H. Oshio et al. describethe synthesis of two cyanide-bridged, high-spin clusters withcore structures of [Fe8Ni6] and [Fe8Co6]. The iron–nickelcluster behaves as a single-molecule magnet, whereas theiron–cobalt system exhibits electron-transfer-coupled spintransitions as a result of external stimuli.

Energy Up-ConversionThe field of energy up-conversion by low-power incoherentexcitation is an emerging technology with potential applica-tions in a variety of fields of interest to photochemists, suchas sensitization of photochemical reactions by low-energyphotons, wavelength shifting for spectroscopy, but also to awider audience, in areas, such as sensitization of photovolta-ics. In the Minireview on page 9560 ff. , P. Ceroni discussesroutes that improve the efficiency of the up-conversionprocess.

Chem. Eur. J. 2011, 17, 9543 � 2011 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim www.chemeurj.org 9543

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