Abstract
The photoinduced electron transfer between C[sub 60] and a [sigma]-conjugated polysilane was investigated by laser flash photolysis in the near-IR region. The transient absorption spectra of C[sub 60] triplet ([sup 3]C[sub 60]*), C[sub 60] radical anion, and the poly(methylphenylsilylene) radical cation were observed in the region 600-1600 nm in a polar solvent. The quenching rate constant k[sub q] of [sup 3]C[sub 60]* corresponded well with the formation rate constant k[sub f] of the poly(methylphenylsilylene) radical cation. Direct electron transfer from poly(methylphenylsilylene) to [sup 3]C[sub 60]* is suggested. The electron-transfer rate constants between C[sub 60] and poly(methylphenylsilylene) showed the polar solvent effect and the local concentration effect of the polymer chain. 33 refs., 9 figs.
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