HYDROGEN-BONDING AND THE SELF-ASSEMBLY OF SUPRAMOLECULAR LIQUID-CRYSTALLINE MATERIALS

被引:211
作者
KATO, T [1 ]
FRECHET, JMJ [1 ]
机构
[1] CORNELL UNIV,BAKER LAB,DEPT CHEM,ITHACA,NY 14853
关键词
D O I
10.1002/masy.19950980127
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Novel supramolecular liquid-crystalline materials have been obtained by the hydrogen bond formation between different and independent molecules. The self-assembly of carboxylic acid and pyridine moieties that function as H-bond donors and accepters, respectively, results in the formation of mesogenic complex structures. A wide variety of liquid-crystalline low molecular weight complexes have been prepared using this approach. This concept has been extended to the polymeric systems. Hydrogen-bonded liquid-crystalline polymers that exhibit mesophases over wide temperature ranges, ferroelectricity or photo-responsibility have been prepared by the molecular association. Moreover, Liquid-crystalline polymer networks that show reversible smectic-isotropic phase transitions have been formed by the hydrogen bonds. The dynamics of the hydrogen bonding may contribute to the induction of the mesomorphism of the networks.
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页码:311 / 326
页数:16
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