吡啶偶氮衍生物的凝胶及液晶性研究  

Study on gelation and mesophase properties of pyridinazo derivative

作　　者：田佳洁 王新[1] 史林琦 黄耀东[1] TIAN Jia-jie;WANG Xin;SHI Lin-qi;HUANG Yao-dong(College of Chemical Engineering,Tianjin University,Tianjin 300350,China)

机构地区：[1]天津大学化工学院,天津300350

出　　处：《化学研究与应用》2022年第3期511-516,共6页Chemical Research and Application

基　　金：天津市自然科学基金项目(15JCYBJC20100)资助。

摘　　要：基于本研究组的前期成果,设计合成了偶氮吡啶类化合物A,研究了它的凝胶和液晶性能。X射线衍射(XRD)的检测结果表明,所形成的有机凝胶都是层状结构;红外和XRD的分析结果表明范德华力是A的主要成胶驱动力。A的凝胶能够对F-进行裸眼识别,能够响应紫外光/可见光的照射,通过发生反式-顺式-反式构型的变化实现凝胶-溶胶-凝胶的转变。偏光显微镜和差示扫描量热仪的测试表明A具有单向热致液晶性质,是一种同时具有凝胶性和液晶性的双功能物质。Novel pyridinazo derivative A was synthesized based on our previous research and its gelating and mesomorphic properties were investigated.Results of the X-ray diffraction(XRD)revealed that all the formed organogels possessed a lamellar structure.Fourier transform infrared spectroscopy and XRD results showed that the main driving forces for gelation was van der Walls interaction.The organogels from A were able to detect F-with naked eye;also,they responded to the stimulus of UV light and visible light and underwent gel-sol-gel phase transition through the structural cis-trans-cis isomerization of A.The investigations of polarization optical microscopy and differential scanning calorimetry indicated that A conducted mesomorphic behaviors,indicating it was dual-function substance with both gelating and liquid-crystalline properties.

关 键 词：小分子有机凝胶 吡啶偶氮 离子响应 裸眼识别 智能材料 光响应 

分 类 号：O625.65[理学—有机化学]