Design, synthesis, and characterisation of symmetrical bent-core liquid   crystalline dimers with diacetylene spacer

doi:10.1080/02678292.2013.805829

CORC > 北京大学 > 化学与分子工程学院

	Design, synthesis, and characterisation of symmetrical bent-core liquid crystalline dimers with diacetylene spacer
	Zhang, Lan-Ying ; Zhang, Qi-Kai ; Zhang, Yu-Dong
刊名	liquid crystals
	2013
关键词	symmetrical liquid crystalline dimers bent-core liquid crystal diacetylene spacer monotropic phase behaviour MESOPHASE BEHAVIOR MESOGENIC UNITS CLICK CHEMISTRY NEMATIC PHASE POLAR ORDER BLUE PHASE MOLECULES TRIMERS POLYMERIZATION POLYMERS
DOI	10.1080/02678292.2013.805829
英文摘要	Two new symmetrical bent-core liquid crystalline dimers (B-DA4 and B-DA12) bearing diacetylenes spacer and different terminal alkyl chains were successfully synthesised via Sonagashira coupling reaction. The molecular structures of these dimers were confirmed by H-1 nuclear magnetic resonance (NMR), Fourier transform-infrared spectroscopy (FT-IR), Raman spectroscopy, mass spectrometry, and elemental analysis. Their thermal stability and liquid crystalline properties were characterised by thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), polarised light microscopy (PLM), and small-angle X-ray scattering (SAXS). Results showed that the diacetylene group may be thermal polymerised at about 260 degrees C far from thermal decomposition. The dimers exhibited monotropic phase behaviour and typical layered-structure phase with long-range order on a length scale of about 6.3nm was observed. The results mentioned above offer a promising opportunity to design polydiacetylene nanowires by thermal, UV irradiation, or scanning tunnelling microscope (STM) tip-induced polymerisation.; Chemistry, Multidisciplinary; Crystallography; Materials Science, Multidisciplinary; SCI(E); 2; ARTICLE; 9; 1263-1273; 40
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/154430]
专题	化学与分子工程学院工学院
推荐引用方式 GB/T 7714	Zhang, Lan-Ying,Zhang, Qi-Kai,Zhang, Yu-Dong. Design, synthesis, and characterisation of symmetrical bent-core liquid crystalline dimers with diacetylene spacer[J]. liquid crystals,2013.
APA	Zhang, Lan-Ying,Zhang, Qi-Kai,&Zhang, Yu-Dong.(2013).Design, synthesis, and characterisation of symmetrical bent-core liquid crystalline dimers with diacetylene spacer.liquid crystals.
MLA	Zhang, Lan-Ying,et al."Design, synthesis, and characterisation of symmetrical bent-core liquid crystalline dimers with diacetylene spacer".liquid crystals (2013).