PULSED-EPR ON THE PHOTOEXCITED TRIPLET-STATE OF C60 IN FLUID SOLUTION - ELECTRON-TRANSFER FROM END-CAPPED QUATERTHIOPHENE AND C60-RADICAL ANION FORMATION

被引：34

作者：

BENNATI, M ^{[1
]}

GRUPP, A ^{[1
]}

BAUERLE, P ^{[1
]}

MEHRING, M ^{[1
]}

机构：

[1] UNIV STUTTGART,INST ORGAN CHEM,W-7000 STUTTGART 80,GERMANY

来源：

CHEMICAL PHYSICS | 1994年 / 185卷 / 02期

关键词：

D O I：

10.1016/0301-0104(94)00115-4

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 photoexcited triplet state of C60 in fluid toluene solution was investigated by pulsed-EPR spectroscopy in a temperature range T = 200-300 K. The time evolution of the triplet EPR signal is found to be determined by the spin-lattice relaxation time T1 and the triplet decay. In the presence of the electron donor end-capped quaterthiophene the C60-triplet decay is quenched by electron transfer reaction. The temperature dependence of the triplet quenching rate k(q) suggests the formation of an exciplex intermediate. Moreover we observe the formation of the C60-radical anion following electron transfer. The kinetics and polarization of the C60- EPR signal are discussed.

引用

页码：221 / 227

页数：7

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