基于杯芳烃和紫精的电刺激响应二元水凝胶（英文）

摘要

基于上缘四脯氨酸修饰杯[4]芳烃和各种紫精客体分子的相互作用,我们构筑了一类新型的二元超分子水凝胶.得到结果显示,在酸性条件下,溴化紫精盐最易于促进四脯氨酸修饰杯[4]芳烃形成水凝胶.并且经落球法测定了所制备水凝胶的凝胶-溶胶转变温度,采用原子力显微镜和扫描电子显微镜表征了水凝胶的微观形态,发现紫精的侧链对水凝胶性质具有显著影响,包括凝胶-溶胶转变温度和微观形态.值得注意的是,该类水凝胶不仅具有优良的电刺激响应性,而且能够通过化学、pH和热等多种因素进行调控.%We built several supramolecular binary hydrogels based on tetra-proline modified calix[4]arene（TPC） and various viologens.The obtained results show that the TPC gelation is mostly achieved with viologen bromides in acidic condition.The variation of viologen side-chains has notable impact on the properties of the hydrogels,such as the gel-sol transition temperature（Tgel） and morphology,which were evaluated by the combination of dropping-ball method,atomic force microscopy and scanning electron microscopy.The prepared hydrogels are significantly electro-responsive,as well as chemical-sensitive,pH-sensitive and thermo-reversible.