Synthesis, single crystal structure and liquid crystalline properties of bent-shaped 2,5-diaryl 1,3,4-oxadiazoles

被引：26
作者：
Zhu, Li-Rong [1 ,2 ]
Yao, Fei [1 ]
Han, Jie [1 ]
Pang, Mei-Li [1 ]
Meng, Ji-Ben [1 ]
机构：
[1] Nankai Univ, Dept Chem, Tianjin 300071, Peoples R China
[2] Nankai Univ, Minist Educ, Key Lab Funct Polymer Mat, Tianjin 300071, Peoples R China
来源：
LIQUID CRYSTALS | 2009年 / 36卷 / 02期
基金：
中国国家自然科学基金;
关键词：
heterocyclic liquid crystals; stilbene; single X-ray crystallography; synthesis; NONLINEAR-OPTICAL PROPERTIES; MESOGENS; DERIVATIVES; BEHAVIOR; SUBSTITUENTS; MESOPHASES; LINKAGES; ETHYNYL; PHASES; FIELD;
D O I：
10.1080/02678290902759244
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Two bent-shaped 1,3,4-oxadiazole-based compounds, namely 2-[4-(2-(4-methylphenyl)-(E)-1-ethenyl)]phenyl-5-(4-pentyloxyphenyl)-1,3,4-oxadiazole 5a and 2-[4-(2-(4-fluorophenyl)-(E)- ethenyl-5-(4-pentyloxyphenyl)-1,3,4-oxadiazole 5b, were synthesised and their liquid crystalline properties were studied in this paper. Compound 5a exhibited an enantiotropic nematic mesophase, while 5b displayed an enantiotropic smectic A phase. No banana-shaped mesophases were found in these mesogens, although they adopt a bent-shaped molecular structure as confirmed by the single X-ray diffraction crystallography.
引用
收藏
页码：209 / 213
页数：5
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