Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
741574 | Sensors and Actuators B: Chemical | 2008 | 5 Pages |
Abstract
A coumarin azine derivative: 3,3′-hydrazine-1,2-diylidenebis(methan-1-yl-1-ylidene)bis(7-(diethyl amino)-2H-chromen-2-one) (ligand 1) was synthesized and characterized. It was used as a colorimetric chemosensor for Hg2+. The absorption maximum of ligand 1 shows a large red shift from 490 nm to 565 nm (Δ = 75 nm) in the presence of Hg2+. The change in color is very easily observed by the naked eye, while other metal cations, such as Fe2+, Co2+, Ni2+, Zn2+, Cd2+, Cu2+, Fe3+, Ag+, Pb2+, alkali metal and alkaline earth metal cations do not induce such a change.
Related Topics
Physical Sciences and Engineering
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Authors
Ruilong Sheng, Pengfei Wang, Weimin Liu, Xiaohua Wu, Shikang Wu,