PHOTOCHEMISTRY OF FULLERENES - EXCITED-STATE BEHAVIOR OF C-60 AND C-70 AND THEIR REDUCTION IN POLY(METHYL METHACRYLATE) FILMS

被引：69
作者：
GEVAERT, M [1 ]
KAMAT, PV [1 ]
机构：
[1] UNIV NOTRE DAME,RADIAT LAB,NOTRE DAME,IN 46556
来源：
JOURNAL OF PHYSICAL CHEMISTRY | 1992年 / 96卷 / 24期
关键词：
D O I：
10.1021/j100203a056
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The singlet and triplet excited states of C60 and C70 have been characterized in poly(methyl methacrylate) (PMMA) films by using picosecond and nanosecond laser flash photolysis techniques. The absorption properties and lifetimes of these excited states are very similar to those observed in solutions. When complexed with dimethylaniline (DMA) in the PMMA films, these fullerenes exhibit decreased lifetimes in their excited states. Photoinduced electron transfer between C60 (or C70) and DMA in the PMMA film was carried out with 532-nm laser pulse excitation. The polymeric environment facilitated the stabilization of electron-transfer products.
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页码：9883 / 9888
页数：6
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