Self-assembly of supramolecular polymers in water from tetracationic and tetraanionic monomers in water through cooperative electrostatic attraction and aromatic stacking

作     者：Ya-Kun Zhao Zhong-Zheng Gao Hui Wang Dan-Wei Zhang Zhan-Ting Li 

作者机构：Department of Chemistry Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials and Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) Fudan University 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2019年第30卷第1期

页      面：127-130页

核心收录：

学科分类：07[理学] 0703[理学-化学] 

基　　金：National Natural Science Foundation of China (Nos. 21432004 and 21472023) for financial support 

主　　题：Supramolecular polymers Electrostatic attraction Aromatic stacking Self-assembly Aqueous phase 

摘      要：The cooperative electrostatic attraction and π-π aromatic stacking interactions between tetrahedral tetrapyridinium TP and three tetraanionic tetraphenylethylene derivatives TPE-1～3 led to the formation of a new kind of supramolecular polymer networks in water, which have been confirmed by^1 H NMR,fluorescence, isothermal titration calorimetric(ITC) and dynamic light scattering(DLS) experiments. ITC studies show that the contributions of enthalpy and entropy were comparable, reflecting the importance of hydrophobicity in driving the intermolecular aromatic stacking. DLS experiments indicate that the linear supramolecular polymers formed by these tetratopic monomers further aggregated into networks of 10~2-nm size.