scholarly journals On the involvement of electron transfer reactions in the fluorescence decay kinetics heterogeneity of proteins

2001 ◽  
Vol 10 (10) ◽  
pp. 2102-2113 ◽  
Author(s):  
Abdessamad Ababou ◽  
Elisa Bombarda
Keyword(s):  
Electron Transfer ◽  
Fluorescence Decay ◽  
Transfer Reactions ◽  
Decay Kinetics ◽  
Electron Transfer Reactions ◽  
Fluorescence Decay Kinetics

Charge separation in a conformationally-flexible porphyrin-fullerene dyad synthesised using cross-metathesis

2007 ◽  
Vol 11 (06) ◽  
pp. 455-462 ◽  
Author(s):  
Toby D. M. Bell ◽  
Kenneth P. Ghiggino ◽  
Andrew Haynes ◽  
Steven J. Langford ◽  
Clint P. Woodward
Keyword(s):  
Electron Transfer ◽  
Charge Separation ◽  
Fluorescence Decay ◽  
Decay Kinetics ◽  
Cross Metathesis ◽  
Fluorescence Decay Kinetics ◽  
Transient Spectroscopy ◽  
A Charge

The synthesis of a Zn (II) porphyrin-fullerene dyad in which the two chromophore units are tethered by a conformationally-flexible linker, is described. The synthesis is highlighted by the use of a cross metathesis strategy to prepare the linker between the chromophores. Photoexcitation of the Zn (II) porphyrin unit of the dyad in tetrahydrofuran leads to substantial (77%) quenching of porphyrin fluorescence. The multiple exponentials fluorescence decay kinetics observed are attributed to different rates of electron transfer from photoexcited porphyrin to fullerene in the various conformers present. A charge-separated state with a 330 ns lifetime is observed by transient spectroscopy.

Quantum effects in adiabatic electrochemical electron-transfer reactions

1997 ◽  
Vol 220 (1-2) ◽  
pp. 95-114 ◽  
Author(s):  
M.T.M. Koper ◽  
J.-H. Mohr ◽  
W. Schmickler
Keyword(s):  
Electron Transfer ◽  
Quantum Effects ◽  
Transfer Reactions ◽  
Electron Transfer Reactions
Sign in / Sign up

Export Citation Format

Share Document