EXCITED-STATE ELECTRON-TRANSFER OF FULLERENES - SINGLET-STATES VERSUS TRIPLET-STATES

被引：40

作者：

CASPAR, JV

WANG, Y

机构：

[1] Central Research and Development, Du Pont Co., Wilmington, DE 19880-0356

来源：

CHEMICAL PHYSICS LETTERS | 1994年 / 218卷 / 03期

关键词：

D O I：

10.1016/0009-2614(93)E1471-R

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：

We report that the quenching rate constants of the triplet states of fullerenes (C-70 and C-60) by aromatic amines such as N,N-diethylaniline and N-ethylcarbazole are at least four orders of magnitude smaller than those of the singlet states in methylcyclohexane. Such dramatic differences between the singlet and triplet electron transfer rate constants from a single species, in spite of the states' apparently similar energetics, are unprecedented. Several possible mechanisms are discussed. The data can be rationalized by the presence of structural distortion and biradical character in the triplet state.

引用

页码：221 / 228

页数：8

共 23 条

[11]

Mataga N., 1970, MOL INTERACTIONS ELE

[12]

MEITES L, 1977, HDB SERIES ORGANIC E

[13]

Platz M. S., 1990, KINETICS SPECTROSCOP

[14] LUMINESCENCE AND ABSORPTION-SPECTRA OF C60 FILMS [J].