Side-chain liquid-crystalline polymers based on flexible rod-like   mesogen directly attached to backbone

doi:10.1002/pola.26337

CORC > 北京大学 > 化学与分子工程学院

	Side-chain liquid-crystalline polymers based on flexible rod-like mesogen directly attached to backbone
	Zheng, Jun-Feng ; Yu, Zhen-Qiang ; Liu, Xin ; Chen, Xiao-Fang ; Yang, Shuang ; Chen, Er-Qiang
刊名	journal of polymer science part a polymer chemistry
	2012
关键词	liquid crystalline polymers (LCP) phase behavior radical polymerization s(LCP) TOBACCO MOSAIC-VIRUS CONFORMATIONAL ISOMERISM METHYLENE UNITS THERMOTROPIC POLYETHERS SUPRAMOLECULAR ARCHITECTURES PHASE-TRANSITIONS BENZYL ETHER ODD NUMBER 1-(4-HYDROXYPHENYL)-2-(2-METHYL-4-HYDROXYPHENYL)ETHANE SPACERS
DOI	10.1002/pola.26337
英文摘要	In this article, we report the synthesis and characterization of a new end-on side-chain liquid crystalline polymer (SCLCP), poly[4-(4'-alkoxyphenyloxymethylene)styrene] [denoted as Poly(n-POMS), where n is the carbon number of the alkyl tail, n = 2, 4, 6, 8, 12, 16], with the flexible rod-like mesogenic side-chain directly attached to the polymer backbone without flexible spacer. The polymer was obtained by using free radical polymerization. The chemical structures of Poly(n-POMS) and the corresponding monomer were characterized using various techniques with satisfactory analysis data. A combination analysis of differential scanning calorimetry, polarized light microscopy, small angle X-ray scattering, and wide-angle X-ray diffraction has been conducted to investigate the phase behavior of Poly(n-POMS). Poly(2-POMS), Poly(4-POMS), and Poly(6-POMS) are amorphous. Poly(8-POMS) develops partially into the liquid crystal phase, and Poly(12-POMS) and Poly(16-POMS) self-assembly into the smectic A (SmA) phase. Upon increasing temperature, the phase transition of Poly(16-POMS) follows the sequence of SmA1 ? SmA2 ? isotropic (I), which may be attributed to the conformation isomerization of the flexible rod-like mesogens. (C) 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2012; Polymer Science; SCI(E); EI; 3; ARTICLE; 24; 5023-5031; 50
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/150862]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Zheng, Jun-Feng,Yu, Zhen-Qiang,Liu, Xin,et al. Side-chain liquid-crystalline polymers based on flexible rod-like mesogen directly attached to backbone[J]. journal of polymer science part a polymer chemistry,2012.
APA	Zheng, Jun-Feng,Yu, Zhen-Qiang,Liu, Xin,Chen, Xiao-Fang,Yang, Shuang,&Chen, Er-Qiang.(2012).Side-chain liquid-crystalline polymers based on flexible rod-like mesogen directly attached to backbone.journal of polymer science part a polymer chemistry.
MLA	Zheng, Jun-Feng,et al."Side-chain liquid-crystalline polymers based on flexible rod-like mesogen directly attached to backbone".journal of polymer science part a polymer chemistry (2012).