Simultaneous determination of Hg(II) and Zn(II) using a GFP inspired chromophore

Reference:

Shi, L., Li, Y., Liu, Z.-P., James, T.D. and Long, Y.-T., 2012. Simultaneous determination of Hg(II) and Zn(II) using a GFP inspired chromophore. Talanta, 100, pp. 401-404.

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Official URL:

http://dx.doi.org/10.1016/j.talanta.2012.07.097

Abstract

A dual-function chemosensor for Hg 2 and Zn 2 ions, inspired by the green fluorescent protein (GFP) chromophore, was designed and synthesized, which could specifically recognize Zn 2 through an "OFF-ON" fluorescence mechanism due to the restriction of the free rotation of the aryl-alkene bond, whilst also producing a selective visible colorimetric response from yellow to pink with Hg 2 ions. The response upon exposure to Zn 2 and Hg 2 is instantaneous, and the detect limits of Zn 2 and Hg 2 are 2.18×10 -8 M and 4.91×10 -7 M respectively.

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