Mesomorphic and fluorescence properties of methyl 4-(4-alkoxystyryl) benzoates

被引：11

作者：

Muhammad, Khushi ^{[1
]}

Nazir, Saba ^{[1
]}

Hameed, Shahid ^{[1
]}

Bechtold, Ivan H. ^{[2
]}

机构：

[1] Quaid I Azam Univ, Dept Chem, Islamabad 45320, Pakistan

[2] Univ Fed Santa Catarina, Dept Fis, BR-88040900 Florianopolis, SC, Brazil

来源：

LIQUID CRYSTALS | 2016年 / 43卷 / 07期

关键词：

styryl esters; banded focalconic; Smectic E phase; fluorescent LC; STATE;

D O I：

10.1080/02678292.2016.1148205

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A series of methyl 4-(4-alkoxystyryl)benzoates was synthesised and studied for liquid crystalline and fluorescence properties. The peculiarity of the reaction scheme involved condensation between 4-alkoxybenzaldehyde and 4-(methoxycarbonyl)benzyltriphenyl phosphonium bromide in dichloromethane without any phase separation. The compounds were found thermally stable up to 200 degrees C. The banded or arced focal-conic fan texture of CrE phase was exhibited on cooling the compounds (with chain length > C-4) below the SmA phase. It was observed that increasing chain length up to C-10 enhances mesophase stability. No LC behaviour was manifested by small (up to C-3) and branched small chain (up to C-4) members of the series. [GRAPHICS] .

引用

页码：863 / 873

页数：11

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