Synthesis and characterization of a sensitive and selective Fe^(3+) fluorescent sensor based on novel sulfonated calix[4]arene-based host-guest complex  

作　　者：Ran Cen Ming Liu Jihong Lu Weifang Zhang Jingjing Dai Xi Zeng Zhu Tao Xin Xiao 

机构地区：[1]Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province,Guizhou University,Guiyang 550025,China

出　　处：《Chinese Chemical Letters》2022年第5期2469-2472,共4页中国化学快报（英文版）

基　　金：the National Natural Science Foundation of China (NSFC, No. 21861011);the Innovation Program for High-level Talents of Guizhou Province (No. 2016–5657) are gratefully acknowledged for financial support

摘　　要：A novel fluorescent sensor was prepared from sulfonated calix[4]arene(SC4A)by the host-guest com-plexation method using the fluorescent dye rhodamine B(RB)as a structure-directing agent.The crystal structure of the host-guest complex(RB@(SC4A)_(3))was confirmed by X-ray diffraction studies while its performance and sensing mechanism for metal ion pollutants were characterized using fluorescence and nuclear magnetic resonance spectroscopies.The results showed that RB@(SC4A)_(3) had a triangular branch structure resulting from host-guest mediation of the interactions between the three SC4A host molecules and the three terminal groups of the guest molecule RB.The host-guest complex exhibited sensitive and selective sensing towards Fe^(3+)ions via a fluorescence quenching mechanism.The results indicated that RB@(SC4A)_(3) could be a promising sensitive and selective fluorescent sensor for metal ion pollutants mon-itoring.It also provided new insights into the synthesis of calixarene-based host-guest complex.

关 键 词：CALIXARENES Rhodamine B Metal ions Fluorescence probe Host-guest chemistry 

分 类 号：O641.3[理学—物理化学] O657.3[理学—化学]