Controlling the Energy and Electron Transfer in a Novel Ruthenium Bipyridyl Complex:  An ESR Study

2001 ◽  
Vol 105 (34) ◽  
pp. 8018-8024 ◽  
Author(s):  
Eylon Yavin ◽  
Lev Weiner ◽  
Rina Arad-Yellin ◽  
Abraham Shanzer
Keyword(s):  
Electron Transfer ◽  
Energy And Electron Transfer ◽  
Bipyridyl Complex ◽  
Ruthenium Bipyridyl

Sequential Energy and Electron Transfer in Aggregates of Tetrakis[oligo(p-phenylene vinylene)] Porphyrins and C60in Water

2005 ◽  
Vol 127 (39) ◽  
pp. 13484-13485 ◽  
Author(s):  
Martin Wolffs ◽  
Freek J. M. Hoeben ◽  
Edwin H. A. Beckers ◽  
Albertus P. H. J. Schenning ◽  
E. W. Meijer
Keyword(s):  
Electron Transfer ◽  
Phenylene Vinylene ◽  
Energy And Electron Transfer

Ultrafast Energy And Electron Transfer In Conjugated Oligomer-Fullerene Molecules

2001 ◽  
Vol 665 ◽  
Author(s):  
P.A. van Hal ◽  
R.A.J. Janssen ◽  
G. Lanzani ◽  
G. Cerullo ◽  
M. Zavelani-Rossi ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Energy Transfer ◽  
Time Constant ◽  
Transfer Reaction ◽  
Polar Solvent ◽  
Phenylene Vinylene ◽  
Intramolecular Electron Transfer ◽  
Pump Probe ◽  
Energy And Electron Transfer ◽  
Probe Spectroscopy

ABSTRACTThe intramolecular photoinduced energy and electron transfer within a fullereneoligothiophene-fullerene triad with nine thiophene units (C60-9T-C60) and an oligo(p-phenylene vinylene)-fullerene dyad with four phenyl groups (OPV4-C60) is investigated with femtosecond pump-probe spectroscopy with sub-10 fs and 200 fs time resolution in solvents of different polarity. Photoexcitation of the π-conjugated oligomer moiety in the triad and dyad results in an ultrafast singlet-energy transfer reaction to create the fullerene singlet-excited state with a time constant of 150-190 fs, irrespective of the polarity of the medium. In a polar solvent, intramolecular electron transfer occurs from the oligomer moiety to the C60 moiety with a time constant of 10-13 ps as a secondary reaction, subsequent to the ultrafast singlet-energy transfer. The charge-separated state has a lifetime of 50-80 ps and recombines to the ground state.

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