JOURNAL ARTICLE

Hg2+-selective ratiometric and "off-on" chemosensor based on the azadiene-pyrene derivative

Yi Zhou, Chao-Yun Zhu, Xu-Sheng Gao, Xue-Yan You, Cheng Yao
Organic Letters 2010 June 4, 12 (11): 2566-9
20450147
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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