A Highly Selective Ratiometric Chemosensor for Hg~(2+) Based on 1,2-Diaminoanthraquinone

摘要

A highly selective colorimetric chemosensor for Hg~(2+) based on 1,2-diaminoanthraquinone was investigated. 1,2-Diaminoanthraquinone showed color change only with Hg~(2+), but it showed no significant changes upon addition of other metal ions such as Fe~(3+), Na~+, Mg~(2+), Pb~(2+), Cd~(2+), Ni~(2+), Cu~(2+) and Zn~(2+). The solvatochromic responses of the 1,2-diaminoanthraquinone in several solvents of widely different polarities were measured; positive solvatochromism, with a large bathochromic shift, was observed from toluene to DMSO.