首页> 中文期刊> 《化学研究》 >基于β-环糊精与偶氮苯衍生物的超分子囊泡体系的构筑

基于β-环糊精与偶氮苯衍生物的超分子囊泡体系的构筑

         

摘要

We first synthesized host compound A possessing cyclodextrin and terpyridine simultaneous-ly,which had host-guest recognition site and metal iron coordination site according to Copper-Catalyzed Azide-Alkyne Cycloaddition. Second, azobenzene derivative B equipped with alkyl chain was synthe-sized. Compound A and B could self-assemble and vesiculate into double layer membranes in H2O and THF mixtures at mole ratio of 1 : 1. In the meantime,we conducted stability analysis in room tempera-ture. Vesicle structures could be controlled by adjusting UV/Vis light and disassembly of vesicles occurred after adding Fe2+. In addition, we demonstrated that inclusion ratio of inclusion complex A and B was 1 : 1 according to job's plot and complex ratio of complex compound Fe2+and A was 1 : 2 according to UV spectrum titration.%运用铜催化的叠氮-炔基Husigen-Click环加成反应,首先设计合成了具有环糊精与三联吡啶基团的化合物A,使其同时具有了主客体识别位点和金属—离子配位位点,接着合成了具有烷基链的偶氮苯衍生物B,通过自组装,化合物A与B形成超分子聚集体.在A与B物质的量之比为1 : 1时,其在 H2O与四氢呋喃(THF) 混合溶剂中可自组装形成具有双层膜结构的囊泡,并观察了囊泡在室温下的稳定性.可以通过调节紫外/可见光照控制该囊泡体系的结构,通过加入Fe2+使囊泡解组装.此外,我们通过Job's曲线证明A与B进行了1 : 1包合,通过紫外滴定法表明加入Fe2+后的体系中,A与Fe2+离子的配位比为2 : 1.

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