High order liquid crystalline structure of poly(11-{[(4′-heptyloxy-4-biphenylyl)carbonyl]oxy}-1-undecyne)

被引：13

作者：

Geng, JX

Zhao, XG

Zhou, EL

Li, G ^{[1
]}

Lam, JWY

Tang, BZ

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China

[2] Hong Kong Univ Sci & Technol, Dept Chem, Kowloon, Hong Kong, Peoples R China

来源：

MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2003年 / 399卷

关键词：

liquid-crystalline polymers; morphology; polyacetylenes; structure; TEM;

D O I：

10.1080/15421400390223121

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Liquid crystalline properties of a mesomorphic polyacetylene {-[HC=C(CH2 )(9)OOC-Biph-OC7H15](n)- (PA9EO7), Biph=4-4'-biphenylyl} are investigated by X-ray diffraction, polarizing optical microscope, and transmission electron microscope. Polyacetylene PA9EO7 from solution adopts a sandwich structure, which is a high order smectic phase. The biphenylyl pendants pack in a hexagonal fashion and the distance between two appendages is 4.51 Angstrom. The heptyloxy tails on one polymer backbone overlap with those on the neighboring chain. The nonyl spacer and the heptyloxy tail exhibit a hexagonal packing arrangement with intermolecular distance of 3.24 Angstrom.

引用

页码：17 / 28

页数：12

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