Novel fluorescent sensor for Ag and Hg based on the BINOL-pyrene derivative via click reaction |
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| Authors: | Xuechao LiuXia Yang Yong FuChengjian Zhu Yixiang Cheng |
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| Affiliation: | a State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
b State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China |
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| Abstract: | A novel BINOL-pyrene derivative sensor 1 for Ag+ and Hg2+ incorporating the triazole moieties and pyrenes was synthesized via click reaction. Binding of Ag+ ion induces the formation of 1:1 Ag+-1 chelating complex, and occurs in a ratiometric manner through an enhanced monomer and declining excimer emission, which make it possible to ratiometrically detect Ag+. The competitive experiment shows 1 can be used as an Ag+ specific fluorescence sensor over a wide range of competing cations. In the meanwhile, the sensor 1 was found to be selectively quenched by only Hg2+ at both monomer and excimer emission. Furthermore, we obtained evidences for different fluorescence signaling behaviors with Ag+ and Hg2+ by 1H NMR titration experiments. |
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| Keywords: | Silver ion Mercury ion Click reaction Fluorescent sensor Ratiometric detection |
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