Two-stage sensing property via a conjugated donor-acceptor-donor constitution: Application to the visual detection of mercuric ion
Journal
Journal of Organic Chemistry
Journal Volume
70
Journal Issue
15
Pages
5827-5832
Date Issued
2005
Author(s)
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 Me(2)SO/H(2)O (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 weakly binds mercury(II) ion with a hypsochromic shift from 408 to 375 nm. Our designed sensor of the donor-acceptor-donor system shows high selectivity toward mercury(II) ion over other competing metal ions.
SDGs
Type
journal article