Liquid crystalline behaviour of hydrazide derivatives containing alkoxyazobenzene

被引:8
|
作者
Bai, Binglian [1 ,2 ]
Mao, Xiyue [1 ]
Xi, Zhanhu [1 ]
Ma, Jie [2 ]
Lin, Xiaolong [2 ]
Wang, Haitao [1 ]
Li, Min [1 ]
机构
[1] Jilin Univ, Coll Mat Sci & Engn, Minist Educ, Key Lab Automobile Mat JLU, Changchun 130023, Peoples R China
[2] Jilin Univ, Coll Phys, Changchun 130023, Peoples R China
基金
中国国家自然科学基金;
关键词
hydrazide derivatives; intermolecular hydrogen bonding; intermolecular separation; azobenzene; SMECTIC C-PHASE; HYDROGEN-BOND; PREFERENTIAL EXHIBITION; COLUMNAR MESOPHASES; BENZOIC-ACID; MOIETIES; MOLECULES; MIXTURES; POLYMERS; DONORS;
D O I
10.1080/02678292.2013.847977
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Two series of dissymmetric hydrazide derivatives containing alkoxyazobenzene with nitro terminal group and octyloxy terminal group, N-4-alkoxyphenyl-N-4-((4-nitrophenyl)azophenyl) benzohydrazide (Bn-NO2, n indicates the number of carbon atoms) and N-4-octyloxyphenyl-N-4-((4-octyloxyphenyl)azophenyl) benzohydrazide (B8-B8), were designed and synthesised, and their liquid crystalline properties were investigated by means of differential scanning calorimetry, polarised optical microscopy and wide-angle X-ray diffraction. It was found that B8-B8 with octyloxy terminal chains displayed monolayer smectic C phase, whereas Bn-NO2 with nitro terminal group displayed SmA(d) phase, and intermolecular hydrogen bonding was confirmed as the driving force. In addition, the effect of hydrogen bonding, dipole-dipole interactions and steric hindrance effect on the liquid crystalline structures were also discussed.
引用
收藏
页码:214 / 221
页数:8
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