Properties of thermotropic liquid crystals induced by hydrogen bonding between pyridyl‐1,2,4‐oxadiazole derivatives and benzoic acid, 4‐chlorobenzoic acid or 4‐methylbenzoic acid

Properties of thermotropic liquid crystals induced by hydrogen bonding between pyridyl‐1,2,4‐oxadiazole derivatives and benzoic acid, 4‐chlorobenzoic acid or 4‐methylbenzoic acid
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吡啶基-1,2,4-恶二唑衍生物与苯甲酸、4-氯苯甲酸或4-甲基苯甲酸之间的氢键诱导热致液晶的性质

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发表时间:
2005
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影响因子:
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通讯作者:
J. Alderete
J. Alderete
中科院分区:
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文献类型:
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作者:
M. Parra;P. Hidalgo;J. Barberá;J. Alderete

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由3-(4-吡啶基)-5-(4-正烷氧基)苯基-1,2,4-恶二唑与苯甲酸、4-氯苯甲酸或4-甲基苯甲酸的二元混合物合成了超分子液晶配合物。恶二唑衍生物和羧酸都不是介晶型的,但氢键复合物是。通过差示扫描量热法、偏光显微镜和X射线衍射研究了它们的液晶性质。
Supramolecular liquid crystalline complexes have been obtained from binary mixtures of 3‐(4‐pyridyl)‐5‐(4‐n‐alkoxy)phenyl‐1,2,4‐oxadiazoles with benzoic acid, 4‐chlorobenzoic acid or 4‐methylbenzoic acid. Neither the oxadiazole derivatives nor the carboxylic acids are mesomorphic, but the H‐bonded complexes are. Their liquid crystalline properties were investigated by differential scanning calorimetry, polarizing optical microscopy and X‐ray diffraction.
DOI: 10.1002/9783527671403
发表时间: 1998
期刊: --
影响因子: --
作者:
S. Chandrasekhar
通讯作者: S. Chandrasekhar