Non-covalent dendrimer-based liquid crystalline complexes: Synthesis and characterization

被引：16
作者：
Didehban, Khadijeh [2 ]
Namazi, Hassan [1 ]
Entezami, Ali Akbar [3 ]
机构：
[1] Univ Tabriz, Lab Carbohydrates & Biopolymers, Fac Chem, POB 5166616471, Tabriz, Iran
[2] NSTRI, Met Grp, Sch Mat, Tehran, Iran
[3] Univ Tabriz, Lab Polymer, Fac Chem, Tabriz, Iran
来源：
EUROPEAN POLYMER JOURNAL | 2010年 / 46卷 / 09期
关键词：
Dendrimer; Hydrogen-bonded; Liquid crystal; DSC; POM; DENDRONIZED POLYMER; MOLAR-MASS; CHAIN; MACROMOLECULES; POLYURETHANE; COPOLYMERS; CHEMISTRY; COVALENT; TRIAZINE; COLUMNAR;
D O I：
10.1016/j.eurpolymj.2010.07.001
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The synthesis and structural characterization of dendritic macromolecules based on 3,5-dihydroxybenzoic acid are described. The molecular structures and purity of all new compounds were confirmed by H-1 NMR, C-13 NMR spectroscopy and elemental analysis. The dendritic non-covalent liquid crystalline complexes were prepared through the formation of hydrogen bonds between different generation of dendritic acids (proton donor) and stilbazole derivative containing bipyridyl units (proton acceptor). We found that, the hydrogen-bonded dendritic liquid crystals supramolecules (G1-2py, G2-2py and G3-2py) exhibits nematic and semectic phase. The polarizing optical microscopy (POM) and differential scanning calorimetry (DSC) were used for investigation of the liquid crystalline properties of the hydrogen-bonded dendritic supramolecular complexes. (C) 2010 Elsevier Ltd. All rights reserved.
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页码：1923 / 1931
页数：9
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