Calix[4]crowns with Methoxynaphthoylmethyl Pendant Groups  

作　　者：金传明 陆国元 张超智 施证伟 游效曾 

机构地区：[1]Department of Chemistry,State Key Laboratory of Coordination Chemistry,Nanjing University

出　　处：《Chinese Journal of Chemistry》2003年第11期1410-1413,共4页中国化学（英文版）

基　　金：ProjectsupportedbytheNationalNaturalScienceFoundationofChina (No .90 10 10 18)

摘　　要：The novel calixcrowns with two pendant groups were prepared by the alkylation of calixcrowns with 6-methoxy-2-bromoacetylnaphthalene. 1H NMR titration and picrate extraction experiments indicated that they exhibit higher complexing efficiency than their parent compounds and possess obvious selectivity for Na + or K +, respetively, and that the cation is encapsulated inside the preorganized ionophoric cavity defined by carbonyl oxygens, the crown ether and the phenoxy oxygens. From UV and fluorescent spectra it is revealed that calix-crown-4 3a with 6-methoxy-2-naphthoylmethyl pedant groups exhibits remarkable cation-induced photophysical effects and it could be utilized as a selective fluorescent sensor for Ca 2+ .The novel calixcrowns with two pendant groups were prepared by the alkylation of calixcrowns with 6-methoxy-2-bromoacetylnaphthalene. 1H NMR titration and picrate extraction experiments indicated that they exhibit higher complexing efficiency than their parent compounds and possess obvious selectivity for Na + or K +, respetively, and that the cation is encapsulated inside the preorganized ionophoric cavity defined by carbonyl oxygens, the crown ether and the phenoxy oxygens. From UV and fluorescent spectra it is revealed that calix-crown-4 3a with 6-methoxy-2-naphthoylmethyl pedant groups exhibits remarkable cation-induced photophysical effects and it could be utilized as a selective fluorescent sensor for Ca 2+ .

关 键 词：CALIX[4]ARENE 1H NMR spectra picrate extraction FLUOROPHORE calcium cation 

分 类 号：O625[理学—有机化学]