Photoinduced Electron Transfer between C60 and Polysilane Studied by Laser Flash Photolysis in the Near-IR Region
Photoinduced Electron Transfer between C60 and Polysilane Studied by Laser Flash Photolysis in the Near-IR Region
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通过近红外区域激光闪光光解研究 C60 和聚硅烷之间的光致电子转移
DOI：
10.1021/j100082a052
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
O. Ito
中科院分区：
文献类型：
--
作者：
A. Watanabe;O. Ito
通过激光闪光光解研究了C [sub 60]和A [Sigma]偶联的多硅烷之间的光诱导的电子转移。在600-1600 nm中观察到C [sub 60]三元组的瞬时吸收光谱（[sub 60]三元组（[SUP 3] C [sub 60]*），C [sub 60]自由基阴离子和聚（甲基苯基甲硅烷基）自由基阳离子。极性溶剂。 [sup 3] C [sub 60]*的淬灭速率常数k [sub q]*与聚（甲基苯基甲二基二烯基）自由基阳离子的形成速率常数k [sub f]相对应。提出了从聚（甲基苯基甲二烯）到[SUP 3] C [sub 60]*的直接电子转移。 C [sub 60]和聚（甲基苯基甲二烯）之间的电子转移速率常数显示出聚合物链的极性溶剂效应和局部浓度效应。 33 Refs。，9图。
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.