Porphyrin-oligothiophene-fullerene triads as an efficient intramolecular electron-transfer system.
A series of porphyrin-oligothiophene-fullerene triads containing quaterthiophene, octithiophene, and dodecithiophene spacers has been synthesized. The fluorescence of the porphyrin chromophore in benzonitrile is efficiently quenched by electron transfer to the fullerene moiety. This process shows a weak distance dependence of the oligothiophene spacer with an attenuation factor beta= 0.11 A(-1).
Ikemoto
Junya
J
Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan.
Takimiya
Kazuo
K
Aso
Yoshio
Y
Otsubo
Tetsuo
T
Fujitsuka
Mamoru
M
Ito
Osamu
O