Lv Xiaoqing, Xia Danyu, Cheng Yujie, Chao Jianbin, Wei Xuehong, Wang Pi
Scientific Instrument Center, Shanxi University, Taiyuan 030006, P. R. China.
School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, P. R. China.
Dalton Trans. 2022 Jan 17;51(3):910-917. doi: 10.1039/d1dt03390e.
An AB-type monomer based on a pillar[5]arene host and an imidazolium salt guest was successfully synthesized through a facile way. This monomer can self-assemble into linear supramolecular polymers in chloroform. After the addition of silver ions, the imidazolium salt group coordinated with silver ions to crosslink the linear supramolecular polymers at their ends, resulting in the formation of supramolecular polymer networks. Meanwhile, after further adding iodide ions, the supramolecular polymer network changed back to the linear supramolecular polymer. As a result, the topological structure of the system can be reversibly tuned. Furthermore, this supramolecular polymer network can be applied to remove organic dyes in water, suggesting its great potential in the treatment of waste water.
一种基于柱[5]芳烃主体和咪唑鎓盐客体的AB型单体通过简便方法成功合成。该单体可在氯仿中自组装成线性超分子聚合物。加入银离子后，咪唑鎓盐基团与银离子配位，使线性超分子聚合物在其末端交联，从而形成超分子聚合物网络。同时，进一步加入碘离子后，超分子聚合物网络又变回线性超分子聚合物。因此，该体系的拓扑结构可被可逆调控。此外，这种超分子聚合物网络可用于去除水中的有机染料，表明其在废水处理方面具有巨大潜力。
