A NEW CHARGE-TRANSFER SYSTEM FOR NEUTRAL-IONIC TRANSITION - TETRATHIAFULVALENE-DIMETHYLDICYANOQUINONEDIIMINE

被引：13

作者：

BASAKI, S

MATSUZAKI, S

机构：

[1] Department of Chemistry, Faculty of Science, Kumamoto University, Kumamoto

来源：

SOLID STATE COMMUNICATIONS | 1994年 / 91卷 / 11期

关键词：

ORGANIC CRYSTALS; PHASE TRANSITIONS; LIGHT ABSORPTION AND REFLECTION;

D O I：

10.1016/0038-1098(94)90003-5

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A neutral-ionic (N-I) transition was found for a mixed-stack charge transfer crystal of tetrathiafulvalene (TTF) and dimethyldicyanoquinonediimine (DMDCNQI) at 0.9 GPa. At the transition pressure (P-c), a large ionicity jump of ca 0.8 was observed in IR spectra. The large jump suggests a small transfer integral in this system. Above P-c, absorption bands of TTF+ and DMDCNQI(-) appeared in electronic spectra and vibronically activated totally symmetric vibrations of TTF and DMDCNQI were observed in the IR spectra.

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页码：865 / 868

页数：4

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