Synthesis and properities of shish-kebab-type liquid crystalline   poly(p-phenylene)s

doi:10.1142/S025676790600128X

CORC > 北京大学 > 化学与分子工程学院

	Synthesis and properities of shish-kebab-type liquid crystalline poly(p-phenylene)s
	Zheng, SJ ; Akagi, K ; Xua, Q ; Li, ZF ; Cao, SK
刊名	高分子科学英文版
	2006
关键词	conjugated polymer liquid crystal shish-kebab fluorescence POLYACETYLENE DERIVATIVES SOLUBLE POLY(PARA-PHENYLENE)S SIDE-CHAINS SUBSTITUENTS ALIGNMENT POLYMERS
DOI	10.1142/S025676790600128X
英文摘要	The novel shish-kebab-type liquid crystalline poly(p-phenylene)s were synthesized through Suzuki coupling reaction from 2,5-bis[(4-n-alkoxyl)benzoyloxy] 1,4-dibromobenzene (monomer 1) and 1,4-benzenediboronic acid bistrimethylene cyclic ester (monomer 2). Their structure and properties were characterized by GPC, DSC, X-ray diffraction and polarizing optical microscope (POM). It was found that the polymers turned to liquid crystalline phase above their melting point. The melting point (T-m) of the polymers decreases when the length of the alkoxy tails of the mesogenic units increases. The mesophase was identified by X-ray diffraction method. The polymers could dissolve in common organic solvents and show strong blue fluorescence. The maximum absorption bands of polymers prepared from annealed films have large red-shift due to the spontaneous orientation of the liquid crystalline side chains. The same phenomena were also observed in the fluorescence spectra.; Polymer Science; SCI(E); EI; 中国科技核心期刊(ISTIC); 4; ARTICLE; 3; 265-271; 24
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/398824]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Zheng, SJ,Akagi, K,Xua, Q,et al. Synthesis and properities of shish-kebab-type liquid crystalline poly(p-phenylene)s[J]. 高分子科学英文版,2006.
APA	Zheng, SJ,Akagi, K,Xua, Q,Li, ZF,&Cao, SK.(2006).Synthesis and properities of shish-kebab-type liquid crystalline poly(p-phenylene)s.高分子科学英文版.
MLA	Zheng, SJ,et al."Synthesis and properities of shish-kebab-type liquid crystalline poly(p-phenylene)s".高分子科学英文版 (2006).