Synthesis, characterisation and liquid crystal properties of   2,5-bis[5-alkyl(alkoxy)phenyl-1,3,4-oxadiazole]bromobenzenes

doi:10.1080/02678290701793881

CORC > 北京大学 > 化学与分子工程学院

	Synthesis, characterisation and liquid crystal properties of 2,5-bis[5-alkyl(alkoxy)phenyl-1,3,4-oxadiazole]bromobenzenes
	Chai, Chunpeng ; Yang, Qian ; Fan, Xinghe ; Chen, Xiaofang ; Shen, Zhihao ; Zhou, Qifeng
刊名	liquid crystals
	2008
关键词	liquid crystals 3,4-oxadiazole OLEDs LIGHT-EMITTING-DIODES ORGANIC MATERIALS ELECTROLUMINESCENT OXADIAZOLE EFFICIENCY 1,3,4-OXADIAZOLE COPOLYMERS POLYMERS FLUORENE MOBILITY
DOI	10.1080/02678290701793881
英文摘要	A series of new thermal bilateral liquid crystal compounds with the phenylenebis-1,3,4-oxadiazole structure was synthesised. The molecular structures of the oxadiazole compounds were confirmed by FT-IR and H-1 NMR spectroscopy, elemental analysis and mass spectrometry. Thermogravimetric analysis indicates that the compounds in an atmosphere of nitrogen have good thermal stability. Measurements using differential scanning calorimetry, polarising optical microscopy and temperature-dependent wide-angle X-ray diffraction indicated that the liquid crystalline properties are related to the length of the end groups. When the end group was tert-butyl or alkoxy with four and six carbons, the compounds exhibit no liquid crystal phase. However, compounds with end groups containing more than eight carbons show significant bidirectional thermally-induced liquid crystal properties and the structure of the liquid crystal phase is the lamellar smectic A phase. All the compounds exhibit blue fluorescence.; Chemistry, Multidisciplinary; Crystallography; Materials Science, Multidisciplinary; SCI(E); 19; ARTICLE; 2; 133-141; 35
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/151530]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Chai, Chunpeng,Yang, Qian,Fan, Xinghe,et al. Synthesis, characterisation and liquid crystal properties of 2,5-bis[5-alkyl(alkoxy)phenyl-1,3,4-oxadiazole]bromobenzenes[J]. liquid crystals,2008.
APA	Chai, Chunpeng,Yang, Qian,Fan, Xinghe,Chen, Xiaofang,Shen, Zhihao,&Zhou, Qifeng.(2008).Synthesis, characterisation and liquid crystal properties of 2,5-bis[5-alkyl(alkoxy)phenyl-1,3,4-oxadiazole]bromobenzenes.liquid crystals.
MLA	Chai, Chunpeng,et al."Synthesis, characterisation and liquid crystal properties of 2,5-bis[5-alkyl(alkoxy)phenyl-1,3,4-oxadiazole]bromobenzenes".liquid crystals (2008).