MESOMORPHIC PROPERTIES OF DI- (4-ALKOXYPHENYL) AND DI- (4-ALKANOYLOXYPHENYL) TETRATHIAFULVALENES

被引:17
作者
BABEAU, A [1 ]
TINH, NH [1 ]
GASPAROUX, H [1 ]
POLYCARPE, C [1 ]
TORREILLES, E [1 ]
GIRAL, L [1 ]
机构
[1] UNIV MONTPELLIER 2,CHIM ORGAN STRUCT LAB,F-34060 MONTPELLIER,FRANCE
来源
MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 1982年 / 72卷 / 5-6期
关键词
D O I
10.1080/01406568208084054
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The polymorphism of the di- (4-alkoxyphenyl) and di- (4-alkanoyloxyphenyl) tetrathiafulvalenes (TTF) is investigated. In the dialkoxy series, the short chain derivative exhibits a smectic G phase and a nematic phase. The latter phase disappears in the long chain derivative. The dialkanoyloxy derivatives exhibit a smectic G phase (for short chains) and a smectic C phase (for long chains). A plot of the mesomorphic-isotropic transition temperatures against the number of carbon atoms of the substituent shows the usual odd-even effect. Some tetra (alkoxyphenyl) tetrathiafulvalenes are described, unfortunately they have no mesomorphic properties.
引用
收藏
页码:171 / 176
页数:6
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