Poly(2,3-diphenylphenylene vinylene) derivatives having liquid crystalline side groups

被引：28

作者：

Li, AK

Yang, SS

Jean, WY

Hsu, CS ^{[1
]}

Hsieh, BR

机构：

[1] Natl Chiao Tung Univ, Dept Appl Chem, Hsinchu 30050, Taiwan

[2] Xerox Corp, Webster, NY 14580 USA

来源：

CHEMISTRY OF MATERIALS | 2000年 / 12卷 / 09期

关键词：

D O I：

10.1021/cm000295f

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：

Poly(2,3-diphenylphenylene vinylene) (DP-PPV) derivatives with pendant mesogene groups were synthesized. A biphenyoxyl or cyclohexylphenoxy moiety serves as the rigid mesogen core, a methylene chain as the spacer, and a alkyl or alkoxy group as the flexible terminal group. The optical properties of the polymers were investigated by UV-vis and photoluminescent spectroscopies. The polymer films emitted green-blue photoluminescence and electroluminescence. The phase transition behaviors of the polymers were characterized by a polarized optical microscope and a differential scanning calorimeter. The monomers did not show mesophases, while the polymers exhibited a nematic phase around 170-190 degrees C. The aligned films exhibited dichroism in absorption and emission spectra, implying that the polymers have potential for linearly polarized LED application.

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页码：2741 / 2744

页数：4

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