TY - JOUR
T1 - Transient absorption study on photoinduced electron transfer between C60 and poly(N-vinylcarbazole) in polar solvent
AU - Fujitsuka, M.
AU - Yahata, Y.
AU - Watanabe, A.
AU - Ito, O.
N1 - Funding Information:
The present work was partly supported by a Grant-in-aid on Scientific Research on Priority-Area (B) on “Laser Chemistry of Single Nanometer Organic Particle” (No. 10207202) from the Ministry of Education, Science, Sports and Culture.
PY - 2000/4
Y1 - 2000/4
N2 - Photoinduced electron transfer reactions between C60 and poly(N- vinylcarbazole) (PVCz) in polar benzonitrile solution have been investigated by observing the transient absorption bands in the visible and near-ir regions. When C60 was photoexcited, the electron transfer reaction occurred via both 3C60/* and 1C60/*. In the case of the reaction via 3C60/*, electron transfer rate constant was 5.1 x 106 M-1 s-1, which is larger than that of the reaction between 3C60/* and EtCz by a factor of 7.5, indicating a stabilization of cation radical of carbazole in PVCz. Electron transfer reactions via 1C60/* proceeded at the diffusion- controlled rate, while the quantum yield for electron transfer is not high. When PVCz was photoexcited, direct photo-ejection occurred from PVCz yielding PVCz - + and solvated electron, in which the latter was captured by C60. Electron transfer from 3PVCz* to C60 was also pointed out as a charge generation mechanism.
AB - Photoinduced electron transfer reactions between C60 and poly(N- vinylcarbazole) (PVCz) in polar benzonitrile solution have been investigated by observing the transient absorption bands in the visible and near-ir regions. When C60 was photoexcited, the electron transfer reaction occurred via both 3C60/* and 1C60/*. In the case of the reaction via 3C60/*, electron transfer rate constant was 5.1 x 106 M-1 s-1, which is larger than that of the reaction between 3C60/* and EtCz by a factor of 7.5, indicating a stabilization of cation radical of carbazole in PVCz. Electron transfer reactions via 1C60/* proceeded at the diffusion- controlled rate, while the quantum yield for electron transfer is not high. When PVCz was photoexcited, direct photo-ejection occurred from PVCz yielding PVCz - + and solvated electron, in which the latter was captured by C60. Electron transfer from 3PVCz* to C60 was also pointed out as a charge generation mechanism.
KW - Fullerene
KW - Photoinduced electron transfer
KW - Poly(N-vinylcarbazole)
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U2 - 10.1016/S0032-3861(99)00479-6
DO - 10.1016/S0032-3861(99)00479-6
M3 - Article
AN - SCOPUS:0343920717
VL - 41
SP - 2807
EP - 2812
JO - Polymer (United Kingdom)
JF - Polymer (United Kingdom)
SN - 0032-3861
IS - 8
ER -