Helical columnar liquid crystals based on dendritic peptides substituted perylene bisimides

被引：40

作者：

Gao, Baoxiang ^{[1
,2
]}

Xia, Defang ^{[1
]}

Zhang, Licui ^{[1
]}

Bai, Qianqian ^{[1
]}

Bai, Libin ^{[1
,2
]}

Yang, Tao ^{[1
,2
]}

Ba, Xinwu ^{[1
,2
]}

机构：

[1] Hebei Univ, Coll Chem & Environm Sci, Baoding 071002, Peoples R China

[2] Hebei Univ, Minist Educ, Key Lab Med Chem & Mol Diag, Baoding 071002, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2011年 / 21卷 / 40期

基金：

中国国家自然科学基金;

关键词：

BUILDING-BLOCKS; DYES; DERIVATIVES; MOBILITY; ELECTRONICS; DIIMIDES; GROWTH; PHASE;

D O I：

10.1039/c1jm13144c

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：

New columnar liquid crystals based on perylene bisimides (PBIs) were synthesized by introducing dendritic peptides onto the two ends of the imide. The self-assembly behaviour of PBIs in solution and in film was investigated through temperature-dependent and solvent-dependent ultraviolet-visible absorption spectroscopy. The mesomorphic behaviour was studied by polarizing optical microscopy, differential scanning calorimetry, small-angle X-ray diffraction and temperature-dependent Fourier transform infrared spectroscopy. Ordered columnar mesophases were observed for PBIs at room temperature. Circular dichroism studies demonstrate that these materials exhibit supramolecular optical activity in the liquid crystalline state, which is attributed to helical columnar organization. The hydrogen bonds at the periphery of PBIs result in the ordered columnar mesophases structure with small inter-disk distances of 3.4 angstrom

引用

页码：15975 / 15980

页数：6

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