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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
【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。
【Abstract】 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.
【Key words】 low molecular weight organogel; pyridinazo; ion sensor; naked eye identification; smart material; photoresponse;
- 【文献出处】 化学研究与应用 ,Chemical Research and Application , 编辑部邮箱 ,2022年03期
- 【分类号】TQ427.26;O753.2
- 【下载频次】129