Synthesis and mesomorphism of fluoroalkylated organometallic mesogens

被引：24

作者：

Bilgin-Eran, B ^{[1
]}

Tschierske, C

Diele, S

Baumeister, U

机构：

[1] Yildiz Teknik Univ, Dept Chem, TR-34210 Istanbul, Turkey

[2] Univ Halle Wittenberg, Inst Organ Chem, D-06120 Halle, Germany

[3] Univ Halle Wittenberg, Inst Chem Phys, D-06120 Halle, Germany

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2006年 / 16卷 / 12期

关键词：

D O I：

10.1039/b511758e

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 first examples of liquid crystalline chloro-bridged dinuclear palladium organyls carrying semiperfluorinated alkyl chains at their peripheries have been synthesised. The liquid crystalline properties were investigated using polarised optical microscopy, differential scanning calorimetry and X-ray scattering. Compounds with six semifluorinated chains and two alkyl chains show hexagonal columnar liquid-crystalline phases with dramatically enhanced mesophase stabilities compared to the related hydrocarbon derivatives, which have only monotropic discotic nematic phases. Compounds with only four semifluorinated alkyl chains and two alkyl chains exhibit enantiotropic smectic A and monotropic smectic C mesophases. Preliminary experiments with mixed systems (eight-chain compounds and six-chain compounds, as well as binary systems with dodecane or TNF) were also carried out.

引用

页码：1136 / 1144

页数：9

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