Photoinduced Electron Transfer in Hydrogen-Bonded Oligo(p-phenylene vinylene)−Perylene Bisimide Chiral Assemblies

2002 ◽  
Vol 124 (35) ◽  
pp. 10252-10253 ◽  
Author(s):  
Albertus P. H. J. Schenning ◽  
Jeroen v. Herrikhuyzen ◽  
Pascal Jonkheijm ◽  
Zhijian Chen ◽  
Frank Würthner ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Photoinduced Electron Transfer ◽  
Phenylene Vinylene ◽  
Perylene Bisimide ◽  
Hydrogen Bonded

Synthesis and photoinduced electron transfer characteristic of a bis (zinc porphyrin)-perylene bisimide array

2011 ◽  
Vol 24 (11) ◽  
pp. 1101-1109 ◽  
Author(s):  
Fuling Wang ◽  
Jianguo Tang ◽  
Jixian Liu ◽  
Yao Wang ◽  
Rui Wang ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Photoinduced Electron Transfer ◽  
Transfer Characteristic ◽  
Zinc Porphyrin ◽  
Perylene Bisimide

Solvent Mediated Intramolecular Photoinduced Electron Transfer in a Fluorene-Perylene Bisimide Derivative

2006 ◽  
Vol 110 (45) ◽  
pp. 12363-12371 ◽  
Author(s):  
Edda E. Neuteboom ◽  
Stefan C. J. Meskers ◽  
Edwin H. A. Beckers ◽  
Stéphanie Chopin ◽  
René A. J. Janssen
Keyword(s):  
Electron Transfer ◽  
Photoinduced Electron Transfer ◽  
Perylene Bisimide

Photoinduced Electron Transfer and Charge-Recombination in 2-Ureido-4[1H]-Pyrimidinone Quadruple Hydrogen-Bonded Porphyrin–Fullerene Assemblies

2011 ◽  
Vol 115 (47) ◽  
pp. 23634-23641 ◽  
Author(s):  
Mao-Lin Yu ◽  
Su-Min Wang ◽  
Ke Feng ◽  
Tony Khoury ◽  
Maxwell J. Crossley ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Photoinduced Electron Transfer ◽  
Charge Recombination ◽  
Hydrogen Bonded

Photoinduced electron transfer (PET) versus excimer formation in supramolecular p/n-heterojunctions of perylene bisimide dyes and implications for organic photovoltaics

2015 ◽  
Vol 185 ◽  
pp. 507-527 ◽  
Author(s):  
Agnieszka Nowak-Król ◽  
Benjamin Fimmel ◽  
Minjung Son ◽  
Dongho Kim ◽  
Frank Würthner
Keyword(s):  
Electron Transfer ◽  
Organic Solar Cells ◽  
Photoinduced Electron Transfer ◽  
Transient Absorption ◽  
Model Systems ◽  
Transient Absorption Spectroscopy ◽  
Time Resolved ◽  
Perylene Bisimide ◽  
Excimer Formation ◽  
Molecular Semiconductor

Foldamer systems comprised of two perylene bisimide (PBI) dyes attached to the conjugated backbones of 1,2-bis(phenylethynyl)benzene and phenylethynyl-bis(phenylene)indane, respectively, were synthesized and investigated with regard to their solvent-dependent properties. UV/Vis absorption and steady-state fluorescence spectra show that both foldamers exist predominantly in a folded H-aggregated state consisting of π–π-stacked PBIs in THF and in more random conformations with weaker excitonic coupling between the PBIs in chloroform. Time-resolved fluorescence spectroscopy and transient absorption spectroscopy reveal entirely different relaxation pathways for the photoexcited molecules in the given solvents, i.e. photoinduced electron transfer leading to charge separated states for the open conformations (in chloroform) and relaxation into excimer states with red-shifted emission for the stacked conformations (in THF). Supported by redox data from cyclic voltammetry and Rehm–Weller analysis we could relate the processes occurring in these solution-phase model systems to the elementary processes in organic solar cells. Accordingly, only if relaxation pathways such as excimer formation are strictly avoided in molecular semiconductor materials, excitons may diffuse over larger distances to the heterojunction interface and produce photocurrent via the formation of electron/hole pairs by photoinduced electron transfer.

scholarly journals Photoinduced dynamics in hydrogen-bonded rotaxanes

2003 ◽  
Vol 75 (8) ◽  
pp. 1055-1060 ◽  
Author(s):  
Albert M. Brouwer ◽  
Sandro M. Fazio ◽  
Céline Frochot ◽  
Francesco G. Gatti ◽  
David A. Leigh ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Hydrogen Bonds ◽  
Time Scale ◽  
Photoinduced Electron Transfer ◽  
Large Amplitude ◽  
Medium Effects ◽  
Macrocyclic Ring ◽  
Large Amplitude Motion ◽  
Photoinduced Processes ◽  
Hydrogen Bonded

Two classes of rotaxanes are described in which photoinduced processes modulate a large-amplitude motion. In the first type, E–Z-isomerization of a fumaric diamide unit to a maleic diamide leads to a substantial weakening of the hydrogen bonds between the diamide and the macrocyclic ring that surrounds it. As a result, the rate of the pirouetting motion is increased approximately by six orders of magnitude. In the second type, intermolecular photoinduced electron transfer is used to induce a reversible shuttling motion on a time scale of microseconds. Medium effects on the rate of shuttling are presented.

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