MONTE-CARLO STUDIES OF PORPHYRIN IN THE SHPOLSKII MATRIX N-OCTANE

被引:40
作者
KOEHLER, TR
机构
[1] IBM Research Laboratory, San Jose
关键词
D O I
10.1063/1.439523
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
A Monte Carlo study is made of the properties of the defect created by the substitution of porphyrin molecules in the Shpolskii matrix n-octane. The atom-atom potential method is used to model the intermolecular interactions. The theoretical orientational and several other properties of the two energetically most favorable defect sites agree quite well with experimental information. In addition, a possible explanation of the Shpolskii effect in this system is found: The octane lattice is packed in a very interlocking structure and seems to be capable of supporting two or three molecule vacancy cages which do not collapse. These are large enough to hold a porphyrin molecule in such a way that its π-orbital system will be less perturbed by the surroundings than is possible in typical solid environments. © 1980 American Institute of Physics.
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页码:3389 / 3395
页数:7
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