PRESSURE-DEPENDENCE OF THE POLARIZED REFLECTANCE SPECTRUM OF A SOLID CHARGE-TRANSFER COMPLEX, PERYLENE-HEXACYANOBUTADIENE (HCBD)

被引:6
作者
IDA, T
YAKUSHI, K
KURODA, H
YAMOCHI, H
SAITO, G
机构
[1] UNIV TOKYO,FAC SCI,DEPT CHEM,BUNKYO KU,TOKYO 113,JAPAN
[2] UNIV TOKYO,INST SOLID STATE PHYS,MINATO KU,TOKYO 113,JAPAN
关键词
D O I
10.1016/0301-0104(91)87043-U
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 polarized reflectance spectrum of the perylene-HCBD complex has been measured al high pressures up to 26 kbar. Extraordinary intensity of the charge-transfer band is observed at high pressures, which cannot be reproduced by a conventional analytical model such as a dimer or trimer model. It is shown that this intensity can be naturally explained by applying the results of diagrammatic valence-bond calculations for an infinite-chain model, which has been reported by Painelli et al. [J. Chem. Phys. 87 (1987) 1705]. The degree of charge transfer-rho, the transfer integral t, and the site-energy difference from the donor to acceptor-DELTA at each pressure are estimated, and the pressure dependence of t and DELTA is found to be partial derivative ln t/partial derivative P = +2.9% kbar-1 and partial-derivative-DELTA/partial derivative P = -9.6 meV kbar-1, respectively.
引用
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页码:113 / 122
页数:10
相关论文
共 42 条
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YAMOCHI, H ;
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[42]   PERYLENE-HEXACYANOBUTADIENE (HCBD) COMPLEX [J].
YAMOCHI, H ;
SAITO, G ;
SUGANO, T ;
KINOSHITA, M ;
KATAYAMA, C ;
TANAKA, J .
SYNTHETIC METALS, 1987, 19 (1-3) :533-536