Fluorescence spectra and quantum yields of [60]fullerene and [70]fullerene under different solvent conditions. A quantitative examination using a near-infrared-sensitive emission spectrometer

被引:85
作者
Ma, B [1 ]
Sun, YP [1 ]
机构
[1] CLEMSON UNIV,DEPT CHEM,HOWARD L HUNTER CHEM LAB,CLEMSON,SC 29634
来源
JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2 | 1996年 / 10期
关键词
D O I
10.1039/p29960002157
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Absorption and emission properties of [60]fullerene and [70] fullerene in solutions of ten different solvents were studied, With the use of anear-infrared-sensitive detector, the complete fluorescence spectra of [60]fullerene and [70]fullerene were determined. The spectra extend well into the near-infrared region. The correct fluorescence quantum yields of [60]fullerene and [70]fullerene in toluene are 3.2 x 10(-4) and 5.7 x 10(-4), respectively, and the yields are slightly different in other solvents. For most applications, the fluorescence quantum yield ratio Phi(F,C70)/Phi(F,C60) of 1.8 can be used as a solvent independent constant, The discrepancies between the experimentally determined transition probabilities and those calculated from observed absorption and fluorescence spectra of both [60] fullerene and [70]fullerene in terms of the Strickler-Berg equation are discussed.
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页码:2157 / 2162
页数:6
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