Colorimetric recognition of Cu (II) by (2-dimethylaminoethyl) amino appended anthracene-9, 10-diones in aqueous solutions: deprotonation of aryl amine NH …

N Kaur, S Kumar

Index: Kaur, Navneet; Kumar, Subodh Dalton Transactions, 2006 , # 31 p. 3766 - 3771

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Citation Number: 31

Abstract

Chromogenic receptors 2 and 3 undergo distinct colour changes from magenta to blue on gradual addition of Cu (II) and can be used as colorimetric probes for spectrophotometric and visual analysis of Cu (II) in the presence of biological metal ions Na (I), K (I), Mg (II), Ca (II), Fe (II), Zn (II) etc. in aqueous solution (methanol–water 1: 1 v/v). On addition of Cu (II), both 2 and 3 exhibit a bathochromic shift of Δλmax= 114 nm for 2 and Δλmax= 150 and ...