苯并咪唑衍生物超分子凝胶的制备及性质研究

Preparation and Properties of Supramolecular Gels Derived from Benzimidazole

超分子凝胶因有独特的结构和广泛的应用,因此成为近年来材料科学的研究热门。以苯并咪唑为母体,合成了2-己基苯并咪唑酰肼,然后在2-己基苯并咪唑酰肼分子上通过亲核加成反应嫁接8-羟基喹啉发色团合成了一种酰腙类凝胶因子L2。L2能在乙二醇中能自组装形成具有热可逆性的超分子凝胶L2-gel,本文重点研究了紫外光照射对超分子凝胶发光变化的影响。研究表明,紫外光照射会引起L2的分子结构发生变化。

Supramolecular gel has become a hot research field in recent years because of its unique structures and potential applications in materials science. A novel hydrazide-functionalized benzimidazole derivative was synthesized. An acylhydrazone-type gelator(L2) was synthesized by grafting 8-hydroxyquinoline chromophones on 2-hexylbenzimidazole hydrazide molecule by nucleophilic addition reaction. L2 can form thermally reversible supramolecular gel by self-assembly in ethylene glycol. The effect of ultraviolet irradiation on the luminescence of supramolecular gel was studied.Experimental results showed that the molecular structure of L2 would change under ultraviolet irradiation.