Two-stage sensing property via a conjugated donor-acceptor-donor constitution: application to the visual detection of mercuric ion

JH Huang, WH Wen, YY Sun, PT Chou…

Index: Huang, Ju-Hui; Wen, Wen-Hsien; Sun, Yueh-Yang; Chou, Pi-Tai; Fang, Jim-Min Journal of Organic Chemistry, 2005 , vol. 70, # 15 p. 5827 - 5832

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Citation Number: 72

Abstract

A conjugated donor-acceptor-donor molecule incorporating a central moiety of naphthyridine and two terminal moieties of di (hydroxyethyl) aniline connected by ethynyl bridges shows two-stage color changes on binding with mercury (II) ion in Me2SO/H2O (1: 1) solution with a bathochromic shift from 450 to 498 nm, and then an extraordinarily large hypsochromic shift to 378 nm. In comparison, the corresponding donor-acceptor molecule ...