The photophysical properties of azafullerenes C59HN and its dimer (C59N)2

被引：0
|
作者：
Ma, B [1 ]
Weitz, A [1 ]
Wudl, F [1 ]
机构：
[1] Univ Calif Los Angeles, Dept Chem & Biochem, Exot Mat Inst, Los Angeles, CA 90095 USA
来源：
RECENT ADVANCES IN THE CHEMISTRY AND PHYSICS OF FULLERENES AND RELATED MATERIAL, VOL 7 | 1999年 / 99卷 / 12期
关键词：
azafullerenes; fluorescence quantum yield; n-pi* photoinduced intramolecular charge transfer; intersystem crossing rate;
D O I：
暂无
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The preliminary photophysical properties of azafullerene materials C59HN and dimer (C59N)(2) are investigated and compared with C-60, C-60 derivatives, and C-60 dimer (C-120). It is found that the quantum yields of the azafullerenes are unexpectedly lower than C-60 with a value of 8.8 x 10(-5) for C59HN and 1.5 x 10(-4) for (C59N)(2) in toluene. The possibility of a photoinduced intramolecular charge transfer process to quench fluorescence of the azafullerenes is ruled out by the effects of solvent polarity and pH. The weak fluorescence of azafullerenes is discussed in terms of El-Sayed's rules.
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页码：359 / 367
页数：5
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