Chromogenic diaza-crown ether dicarboxylic acids for determination of calcium ions

…, E Chapoteau, BP Czech, J Krzykawski…

文献索引：Bartsch, Richard A.; Chapoteau, Eddy; Czech, Bronislaw P.; Krzykawski, Jan; Kumar, Anand; Robison, Thomas W. Journal of Organic Chemistry, 1994 , vol. 59, # 3 p. 616 - 621

全文：HTML全文

被引用次数: 20

摘要

The synthesis of two novel calcium chromoionophores 2 and 3, which are based on a benzodiazacrown ether with an inward-facing methoxyl group and bear two acetic acid groups and a 2, 4, 6-trinitroanilino chromophore, is described. Calcium and magnesium responses at pH optima are determined. Compound 2 exhibits a 31-nm bathochromic shift of the absorption maximum, an increase in the absorptivity upon complexation with Ca2+, ...