Absorption spectroscopic study of the complexation of C70 with aniline and substituted anilines

被引:27
作者
Bhattacharya, S
Nayak, SK
Chattopadhyay, S
Banerjee, M
Mukherjee, AK [1 ]
机构
[1] Univ Burdwan Golapbag, Dept Chem, Burdwan 713104, W Bengal, India
[2] Bhabha Atom Res Ctr, Div Bioorgan, Bombay 400085, Maharashtra, India
关键词
D O I
10.1021/jp0204051
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
Complexes of fullerene C-70 with aniline and various substituted anilines have been studied in CCl4 medium by electronic absorption spectroscopy. An absorption band due to a charge transfer (CT) transition is observed in the visible region. The experimental CT transition energies are well correlated (through Mulliken's equation) with the ionization potentials (I-D) of the series of anilines studied. From an analysis of this correlation, the electron affinity of C-70 has been found to be 2.28 eV. The degree of charge transfer in the ground state of the complexes has been found to be very low (0.2-0.3%). The experimentally determined formation constants of the complexes of C-70 with N-substituted anilines exhibit a very good linear free-energy relationship.
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收藏
页码:6710 / 6713
页数:4
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