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作者：H. W. Zhou,* W. Tian, J. Min, P. Li, S. H. Zeng, W. X. Chen, A. J. Ma
關鍵字：Chemosensor, coumarin, mercury, ratiometric, colorimetric
論文來源：期刊
具體來源：Analytical Sciences
發表時間：2015年
Chemosensors provide an efficient and low-cost approach to the detection of various metal ions and small molecules. In the present work, we present a detailed investigation of a simple, easily-prepared, yet efficient, coumarin-based sensor for Hg²⁺. The sensor is based on a fluorescent group of coumarin. When exposed to Hg²⁺,the sensor solution shows a significant color change from yellow to red, and a fluorescence change from green to orange. Further study revealed that the sensor responds solely to Hg²⁺,and shows excellent selectivity even in the presence of other potential competition metal ions, including Na⁺, K⁺, Co²⁺,Fe²⁺,Cd²⁺ , Cu²⁺ , Ni²⁺ , Ag⁺, Zn²⁺ , Mg²⁺ , Mn²⁺,Pb²⁺,Fe³⁺.Furthermore, the sensor has een successfully applied to detect Hg2+in a form of test paper, which may promote easy and effective application of the sensor.