Ultrafast Photoinduced Electron Transfer in a Chlorophyll-Based Triad:  Vibrationally Hot Ion Pair Intermediates and Dynamic Solvent Effects

1996 ◽  
Vol 118 (1) ◽  
pp. 81-88 ◽  
Author(s):  
Gary P. Wiederrecht ◽  
Mark P. Niemczyk ◽  
Walter A. Svec ◽  
Michael R. Wasielewski
Keyword(s):  
Electron Transfer ◽  
Solvent Effects ◽  
Photoinduced Electron Transfer ◽  
Ion Pair

scholarly journals Ultrafast photoinduced electron transfer in conjugated polyelectrolyte–acceptor ion pair complexes

2020 ◽  
Vol 4 (12) ◽  
pp. 3649-3659
Author(s):  
Pradeepkumar Jagadesan ◽  
Silvano R. Valandro ◽  
Kirk S. Schanze
Keyword(s):  
Electron Transfer ◽  
Photoinduced Electron Transfer ◽  
Ion Pair ◽  
Conjugated Polyelectrolytes ◽  
Conjugated Polyelectrolyte ◽  
Sensing Applications

Conjugated polyelectrolytes (CPEs) are a promising class of materials for photovoltaic and sensing applications due to their ability to undergo efficient photoinduced electron transfer (ET).

Flavin Core as Electron Acceptor Component in a Zinc(II)-Phthalocyanine-Based Dyad

2008 ◽  
Vol 61 (4) ◽  
pp. 256 ◽  
Author(s):  
Andreas Gouloumis ◽  
G. M. Aminur Rahman ◽  
Julia Abel ◽  
Gema de la Torre ◽  
Purificación Vázquez ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Ground State ◽  
Charge Separation ◽  
Photoinduced Electron Transfer ◽  
Significant Interaction ◽  
Transient Absorption ◽  
Cross Coupling ◽  
Ion Pair ◽  
Donor Acceptor ◽  
Recombination Dynamics

A zinc(ii)-phthalocyanine-flavin dyad has been synthesized by Heck-type cross-coupling between a flavin that bears a p-iodophenyl group and a phthalocyanine functionalized with a vinyl moiety. Electrochemical experiments reveal that no significant interaction occurs at the ground state between the two electroactive subunits. However, the occurrence of a photoinduced electron transfer in this donor–acceptor conjugate is observed in transient absorption experiments. Charge-separation (i.e., 4.0 × 1011 s–1) and charge-recombination dynamics in benzonitrile (2.2 × 1010 s–1) reveal a remarkable stabilization of the radical ion pair in this solvent.

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