Ultrafast back electron transfer processes in the photoexcited methylviologen-iodide charge transfer complexes

2001 ◽  
Vol 27 (7-8) ◽  
pp. 795-806 ◽  
Author(s):  
Stanislas Pommeret ◽  
Jean-Claude Mialocq ◽  
Bogdan Tokarczyk ◽  
Włodzimierz Jarzeba
Keyword(s):  
Electron Transfer ◽  
Charge Transfer ◽  
Charge Transfer Complexes ◽  
Transfer Processes ◽  
Back Electron Transfer ◽  
Electron Transfer Processes

scholarly journals Efficient long-range electron transfer processes in polyfluorene–perylene diimide blends

Nanoscale ◽  
2018 ◽  
Vol 10 (23) ◽  
pp. 10934-10944 ◽  
Author(s):  
Anna Isakova ◽  
Safakath Karuthedath ◽  
Thomas Arnold ◽  
Jonathan R. Howse ◽  
Paul D. Topham ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Charge Transfer ◽  
Symmetry Breaking ◽  
Long Range ◽  
Perylene Diimide ◽  
Transfer Processes ◽  
Interfacial States ◽  
Donor Acceptor ◽  
Excimer Formation ◽  
Electron Transfer Processes

Symmetry-breaking charge transfer in donor–acceptor blends comprising perylene diimide avoids strongly-bound interfacial states and outperforms excimer formation.

Photoinduced electron transfer processes in three component rotaxanes with porphyrins, [60]fullerene and triphenylamine

2006 ◽  
Vol 10 (12) ◽  
pp. 1346-1359 ◽  
Author(s):  
Hisahiro Sasabe ◽  
Yoshio Furusho ◽  
Atula S.D. Sandanayaka ◽  
Yasuyuki Araki ◽  
Nobuhiro Kihara ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Charge Separation ◽  
Transient Absorption ◽  
Photophysical Properties ◽  
Solvent Polarity ◽  
Time Resolved ◽  
Transfer Processes ◽  
Back Electron Transfer ◽  
Electron Transfer Processes ◽  
Absorption Measurements

Electron transfer processes occurring through-space and through-bond were studied for novel mechanically linked triad [2]rotaxanes, which contain a porphyrin (MP) unit as a pendant and [60]fullerene ( C 60) and triphenylamine ( TPA ) moieties as stopper groups at the axle ends (abbreviated as ( MP ; C 60- TPA ) rot+ with MP = H 2 P or ZnP . The photophysical properties were investigated by means of time-resolved fluorescence and transient absorption measurements with changing solvent polarity. The charge separation took place mainly via(1 MP *; C 60- TPA ) rot+ and ( MP ;1 C 60*- TPA ) rot + in polar solvents. Within the charge-separated states of triads ( MP ; C 60- TPA ) rot +, hole-shift and/or back electron transfer took place competitively. The lifetime of the charge separation state of ( ZnP ; C 60- TPA ) rot+ was similar to that of dyad ( C 60- TPA ) rot+ (140 ns in dimethylformamide), whereas that of ( H 2 P ; C 60- TPA ) rot + was as long as 230 ns, suggesting two final charge separation states such as ( MP ; C 60•-- TPA •+) rot + and ( MP •+; C 60•-- TPA ) rot+ depending on the kind of porphyrin.

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