蜜胺修饰的偶氮类凝胶因子的合成及其凝胶行为  

Synthesis and Gelation Behavior of Organic Azobenzene Gelators with Melamine Moieties

作　　者：杨新国[1,2] 钱杨[1,2] 沈启立[1,2] 李文露[1,2] 钟文斌[1,2] 

机构地区：[1]湖南大学材料科学与工程学院,湖南长沙410082 [2]湖南大学湖南省喷射沉积技术及应用重点实验室,湖南长沙410082

出　　处：《湖南大学学报（自然科学版）》2016年第6期46-52,共7页Journal of Hunan University:Natural Sciences

基　　金：国家自然科学基金资助项目(50573019;51273061);浙江大学硅材料国家重点实验室开放课题(SKL2009-5)~~

摘　　要：设计合成了2个双蜜胺修饰的偶氮苯类小分子有机凝胶因子M-AZO-1和MAZO-2.M-AZO-1和M-AZO-2能在多种有机溶剂中形成稳定的凝胶.通过SEM观察凝胶聚集体结构发现,凝胶因子在不同溶剂中形成凝胶的微观形貌结构不同,在乙酸乙酯等极性溶剂中凝胶纤维直径较大,在甲苯和甲基环己烷等非极性溶剂中凝胶纤维直径较小.进一步研究了UV光照对凝胶行为的影响.M-AZO-1和M-AZO-2经365nm UV光照后仍可以形成凝胶,其凝胶聚集体结构变化不明显.Two azobenzene gelators（M-AZO-1and M-AZO-2）with melamine moieties were designed and synthesized.The two gelators can gel many kinds of organic solvents with a low concentration.The SEM images of the xerogels showed fibers with larger diameter formed in polar organic solvents such as ethyl acetate,and fibers with smaller diameters formed in apolar organic solvents such as toluene and methyl cyclohexane.The effect of UV irradiation on gelation behavior was further investigated.After the irradiation of 365 nm light,M-AZO-1and M-AZO-2could still gel the same solvents and the morphologies of aggregations remained unchanged obviously.

关 键 词：偶氮苯 蜜胺 光致顺反异构 有机凝胶 

分 类 号：O641.3[理学—物理化学]