Synthesis and characterization of bifunctional liquid-crystalline monomers showing smectic C phase. Photopolymerization and cross-linking

被引：25

作者：

Sahlen, F ^{[1
]}

Trollsas, M ^{[1
]}

Hult, A ^{[1
]}

Gedde, UW ^{[1
]}

机构：

[1] ROYAL INST TECHNOL,DEPT POLYMER TECHNOL,S-10044 STOCKHOLM,SWEDEN

来源：

CHEMISTRY OF MATERIALS | 1996年 / 8卷 / 02期

关键词：

D O I：

10.1021/cm950282f

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：

Novel syntheses of bifunctional liquid-crystalline acrylate and methacrylate monomers are described. Thermal and microstructural characterization of the monomers using small-angle X-ray scattering, differential scanning calorimetry, and optical microscopy revealed the presence of smectic A, smectic C, and smectic E phases. Photopolymerization of the bifunctional monomers conducted at different temperatures preserved the monomeric liquid-crystalline structure in the cross-linked polymers. The densely cross-linked polymers showed thermal reversibility. Mixtures of these monomers and chiral monofunctional liquid-crystalline monomers exhibited chiral smectic C mesomorphism that was permanented by photopolymerization and subsequent cross-linking.

引用

页码：382 / 388

页数：7

共 22 条

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