Effect of bent-shape and calamitic-shape of hydrogen-bonded mesogens on the liquid crystalline properties
Effect of bent-shape and calamitic-shape of hydrogen-bonded mesogens on the liquid crystalline properties
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氢键介晶的弯曲形状和杆状形状对液晶性能的影响
DOI：
10.1080/02678292.2015.1031718
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发表时间：
2015-06
期刊：
影响因子：
2.2
通讯作者：
Yang, Huai
中科院分区：
文献类型：
--
作者：
Yang, Zhou;Cao, Hui;Wang, Dong;Yang, Huai
以异烟酸酯和烟酸酯衍生物为质子受体，合成了6个系列的氢键液晶，研究了具有棒状和棒状结构的氢键液晶基元对液晶行为的影响。对侧位氟取代基和端链长度也进行了详细的研究。当氢键液晶结构由棒状转变为棒状时，其长宽比大大减小，导致中间相的温度范围变窄，熔点和清亮点降低。虽然氟取代基的引入会降低长宽比，导致中间相范围变窄甚至消失，但能有效抑制近晶A相的出现，明显增强氢键自组装的强度。此外，它可以帮助减少相变点，以增加末端链的长度。
Six series of hydrogen-bonded (H-bonded) liquid crystals (LCs) were synthesised to study the effect of H-bonded mesogens with calamitic-shape or bent-shape structure on mesogenic behaviours by using isonicotinate and nicotinate derivatives as proton acceptors. The lateral fluoro-substituent and the length of the terminal chains were also studied in detail. When the structure of H-bonded LCs changed from calamitic-shape to bent-shape, the length to breadth ratio reduced greatly, which led to the temperature range of mesophases narrowed and a decrease in melting point and clear point. Although the introduction of fluorine substituent could reduce the length to breadth ratio and lead to the mesophase range narrowed, even disappeared, it could effectively inhibit the emergence of the smectic A phase and obviously enhance the strength of H-bond self-assembly. Additionally, it could help reduce the phase transition points to increase the length of terminal chains.
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影响因子：
2.2
作者：
M. K. Paul;R. Kumar;N. Chakraborty;K. Raina;N. V. Rao
通讯作者：
M. K. Paul;R. Kumar;N. Chakraborty;K. Raina;N. V. Rao
氢键诱导螺距梯度聚合物稳定胆甾液晶的宽带反射特性
影响因子：
2.2
作者：
Zhang, Lipei;He, Wanli;Yuan, Xiaotao;Hu, Wang;Cao, Hui;Yang, Huai;Zhu, Siquan
通讯作者：
Zhu, Siquan
影响因子：
29.4
作者：
Shun-Chi Chang;Jie Liu;J. Bharathan;Yang Yang-Yang;Jun Onohara;J. Kido
通讯作者：
Shun-Chi Chang;Jie Liu;J. Bharathan;Yang Yang-Yang;Jun Onohara;J. Kido
影响因子：
2.2
作者：
Ling Wang;Wanli He;Meng Wang;Mei-ju Wei;Jianzi Sun;Xingwu Chen;Huai Yang
通讯作者：
Ling Wang;Wanli He;Meng Wang;Mei-ju Wei;Jianzi Sun;Xingwu Chen;Huai Yang
影响因子：
2.2
作者：
M. Varia;H. T. Srinivasa;Sandeep Kumar
通讯作者：
M. Varia;H. T. Srinivasa;Sandeep Kumar