【摘要】 设计合成了一种含有冠醚和L-谷氨酰胺基团的单吡咯并四硫富瓦烯三元低分子量凝胶因子.实验表明,本体凝胶在引入无机氧化剂的情况下可以转变为稳定的电荷转移盐凝胶.进一步研究表明,分子间氢键、π-π堆积、S…S相互作用和电荷转移相互作用是形成有机凝胶的主要驱动力.凝胶在外界刺激作用下呈现可逆的宏观相态变化,电荷转移盐凝胶可以可逆转化为原始的凝胶体系;在四氢呋喃中形成的本体凝胶对水非常敏感,少量水的加入即可导致凝胶迅速坍塌.该研究为构筑功能性软材料提供了新的研究思路.更多还原

【Abstract】 A novel triad gelator based on monopyrrolotetrathiafulvalene containing crown ether and L-glutamine groups have been designed and synthesized.The native gel could be transformed into the charge transfer(CT) salt gels with inorganic oxidants.Further studies revealed that intermolecular hydrogen-bonding,π-π stacking,S…S interaction as well as CT interaction are the main driving forces for the formation of the organogels.The gel shows a reversible macroscopic volume phase transition responding to temperature and ultrasound,as well as the CT salt gels could be reversible transformed to original gel systems.Intriguingly,the native gel form in THF is quite sensitive to water,and addition of small amount of water induce rapid gel collapse.This study lays a new thought for constructing some functional soft materials.更多还原