PHOTOCHEMICAL PROPERTIES OF C-60 - TRIPLET-EXCITED C-60 QUENCHING BY ELECTRON-ACCEPTORS TCNQ AND TCNE IN SOLUTION - LASER PHOTOLYSIS STUDY

被引：35
|
作者：
NADTOCHENKO, VA
DENISOV, NN
RUBTSOV, IV
LOBACH, AS
MORAVSKII, AP
机构：
[1] Institute of Chemical Physics, the Russian Academy of Sciences, 142432 Chernogolovka, Moscow Region
来源：
CHEMICAL PHYSICS LETTERS | 1993年 / 208卷 / 5-6期
关键词：
D O I：
10.1016/0009-2614(93)87168-3
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 quenching of triplet-excited C-3(60) by electron acceptors TCNQ and TCNE has been established in nonpolar toluene and moderately polar benzonitrile solutions. The quenching constants k(q) are 5.5 x 10(9) in toluene, 2.2 x 10(9) in benzonitrile for TCNQ and 7.9 x 10(5) in toluene, 4.2 x 10(8) (M s)-1 in benzonitrile for TCNE. The C-3(60) quenching can be explained by triplet exciplex formation. The time-resolved spectra of the C60/TCNE system exhibit a well pronounced charge-transfer ''cited state [C60delta+)...TCNE(delta-] in benzonitrile.
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页码：431 / 435
页数：5
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