A viologen-urea-based anion receptor:Colorimetric sensing of dicarboxylate anions  

作　　者：Zhi-Yun Dong Da-Wei Zhang Xiao-Zhi Jiang Hui Li Guo-Hua Gao 

机构地区：[1]Shanghai Key Laboratory of Green Chemistry and Chemical Processes,Department of Chemistry,East China Normal University [2]School of Chemistry and Chemical Engineering,Shanghai Jiao Tong University

出　　处：《Chinese Chemical Letters》2013年第8期688-690,共3页中国化学快报（英文版）

基　　金：the financial support from the National Natural Science Foundation of China(No.21072061);Shanghai Leading Academic Discipline Project(No.B409)

摘　　要：Compound 1 bearing urea and viologen groups has been designed and synthesized.It could be used as a colorimetric receptor for dicarboxylate anions due to the significant color changes of the solution upon the addition of dicarboxylates.More importantly,the color changes were related to the chain lengths of the dicarboxylates tested.UV-vis,＇H NMR and HRMS studies demonstrated that receptor 1 utilized hydrogen bonds and electrostatic interactions to form 1：1 stoichiometry complexes with these anions.In addition,the generation of cation radical 1＇ during the complexation process was also detected by EPR.Compound 1 bearing urea and viologen groups has been designed and synthesized.It could be used as a colorimetric receptor for dicarboxylate anions due to the significant color changes of the solution upon the addition of dicarboxylates.More importantly,the color changes were related to the chain lengths of the dicarboxylates tested.UV-vis,＇H NMR and HRMS studies demonstrated that receptor 1 utilized hydrogen bonds and electrostatic interactions to form 1：1 stoichiometry complexes with these anions.In addition,the generation of cation radical 1＇ during the complexation process was also detected by EPR.

关 键 词：Colorimetric receptor Urea Viologen Dicarboxylate 

分 类 号：O657.3[理学—分析化学]