Transient absorption study on photoinduced electron transfer between C60 and poly(N-vinylcarbazole) in polar solvent

M. Fujitsuka, Y. Yahata, A. Watanabe, O. Ito

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)2807-2812
Number of pages6
JournalPolymer
Volume41
Issue number8
DOIs
Publication statusPublished - 2000 Apr

Keywords

  • Fullerene
  • Photoinduced electron transfer
  • Poly(N-vinylcarbazole)

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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