Two Multi-armed Neutral Receptors for α,ω-Dicarboxylate Anions  

作　　者：吴进龙 何永炳 隗兰华 刘顺英 徐括喜 孟令芝 

机构地区：[1]Department of Chemistry, Wuhan University, Wuhan, Hubei 430072, China

出　　处：《Chinese Journal of Chemistry》2006年第4期527-532,共6页中国化学（英文版）

基　　金：Project supported by the National Natural Science Foundation of China （No. 20372054）.

摘　　要：Two new multi-armed neutral receptors 1 and 2 containing thiourea and amide groups were synthesized by simple steps in good yields. Receptors 1 and 2 have a better selectivity and higher association constants for malonate anion than other anions examined by the present work. In particular, distinct color changes were observed upon addition of dicarboxylate anions to the solution of 1 in DMSO. The UV-Vis and fluorescence spectra data indicate that a 1 ： 2 stoichiometry complex was formed between compound 1 or 2 and dicarboxylate anions of shorter carbon chain, and a 1 ： 1 stoichiometry complex was formed between compound 1 or 2 and dicarboxylate anions of longer carbon chain through hydrogen bonding interactions.Two new multi-armed neutral receptors 1 and 2 containing thiourea and amide groups were synthesized by simple steps in good yields. Receptors 1 and 2 have a better selectivity and higher association constants for malonate anion than other anions examined by the present work. In particular, distinct color changes were observed upon addition of dicarboxylate anions to the solution of 1 in DMSO. The UV-Vis and fluorescence spectra data indicate that a 1 ： 2 stoichiometry complex was formed between compound 1 or 2 and dicarboxylate anions of shorter carbon chain, and a 1 ： 1 stoichiometry complex was formed between compound 1 or 2 and dicarboxylate anions of longer carbon chain through hydrogen bonding interactions.

关 键 词：neutral receptor anion recognition colorimetric chemosensor DICARBOXYLATE UV-Vis spectrum 

分 类 号：O623.624[理学—有机化学] TP212.2[理学—化学]