Synthesis and mesogenic properties of three- and four-ring compounds with a fluoroisothiocyanatobiphenyl moiety

被引：36

作者：

Dabrowski, R. ^{[1
]}

Dziaduszek, J. ^{[1
]}

Garbat, K. ^{[1
]}

Filipowicz, M. ^{[1
]}

Urban, S. ^{[2
]}

Gauza, S. ^{[3
]}

Sasnouski, G. ^{[4
]}

机构：

[1] Mil Univ Technol, Inst Chem, Warsaw, Poland

[2] Jagiellonian Univ, Inst Phys, Krakow, Poland

[3] Univ Cent Florida, Coll Opt & Photon, Orlando, FL 32816 USA

[4] Belarusian State Univ, Inst Appl Phys, Minsk 220050, BELARUS

来源：

LIQUID CRYSTALS | 2010年 / 37卷 / 12期

关键词：

nematic isothiocyanates; syntheses; phase transitions; bulk viscosity; refractive indices; dielectric anisotropy; nematic mixtures; X-RAY-DIFFRACTION; HOMOLOGOUS SERIES; PHASE-TRANSITION; LIQUID-CRYSTALS; BIREFRINGENCE; ISOTHIOCYANATES; BIPHENYLS;

D O I：

10.1080/02678292.2010.521983

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The syntheses and mesomorphic properties of 4-alkylcyclohexyl- and 4-alkylcyclohexylethyl and 4-alkylbicyclohexyl-3-fluoro- and 3,5-difluorobiphenyl-4-isothiocyanates are described. The compounds are low melting, very broad range nematic liquid crystals and are very useful for the formulation of nematic mixtures of low viscosity and with a moderately high birefringence (0.3-0.35). The refractive indices, bulk viscosity and dielectric anisotropy extrapolated from Demus' ester mixture for the prepared compounds are presented.

引用

页码：1529 / 1537

页数：9

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