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Hg2+-selective ratiometric and "off-on" chemosensor based on the azadiene-pyrene derivative
Yi Zhou1, Chao-Yun Zhu, Xu-Sheng Gao
1College of Science, Nanjing University of Technology, Nanjing 210009, P. R. China.
Organic Letters
|May 11, 2010
Abstract:
A new pyrene-based derivative bearing an azadiene group was synthesized as a ratiometric chemosensor for Hg(2+) in aqueous acetonitrile solution. The "off-on" type signaling behavior of the fluoroionophore is due to the metal ion induced conformational changes from the weak pyrene monomer emissions to strong pyrene excimer emission.
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