Dynamically switchable porphyrin-based molecular tweezer for on-off fullerene recognition

作     者：Zhimin Sun Xin-Hui Guo Yue Zhao Qing-Yu Meng Li-Juan Xing He-Lue Sun 

作者机构：College of Chemistry and Materials ScienceHebei Key Laboratory of Organic Functional MoleculesHebei Normal UniversityShijiazhuang 050024China 

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

年 卷 期：2024年第35卷第6期

页      面：283-287页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070304[理学-物理化学(含∶化学物理)] 070303[理学-有机化学] 0703[理学-化学] 

基　　金：the financial support of the National Natural Science Foundation of China(No.21801060) Natural Science Foundation of Hebei Province(Nos.B2019205172,226Z1501G) China Postdoctoral Science Foundation(No.2020TQ0087) the support from the National Demonstration Center for Experimental Chemistry Education of Hebei Normal University 

主　　题：Molecular tweezer Fullerene recognition Supramolecular chemistry Conformation conversion Coordination 

摘      要：Herein,a novel molecular tweezer based on 2,2 -bipyridine-bridged porphyrin subunits was constructed for efficient fullerenes *** syn conformation of the molecule,which was obtained by Zn(Ⅱ)coordination,gives rise to a proper cavity to interact with fullerene guests to form a stable 1:1 complex in toluene *** exhibits distinct binding selectivity towards C_(60)over C_(70).Moreover,the fullerene recognition capacity can be adequately suppressed by importing H_(2)PO_(4)^(-)to competitively capture Zn(Ⅱ)along with syn-anti conformational ***,the molecular tweezer regenerated to bind the fullerene by introducing the Ca^(2+)into the ***,the association-disassociation process can be switched reversibly and repeatedly.