An Efficient Way for the Recognition of Zinc Ion via the Fluorescence Enhancement |
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| Authors: | Qiuguang Sang Jingkui Yang |
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| Institution: | College of Chemistry and Chemical Engineering, Graduate University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | This study concentrates on the spectral and complexing properties of a tetraoxycalix2]arene2]triazine derivative bearing two bipyridines (Calix‐BIPY2) in a mixture of acetonitrile:chloroform (4:1, V:V). The results show that Calix‐BIPY2 has a highly selectivity and sensitivity towards Zn2+ over various competing cations (K+, Cu2+, Cd2+, Co2+, Fe2+, Hg2+, Ag+, Al3+ and Pb2+). The complexation of Zn2+ induces a remarkable fluorescence enhancement due to combination effects of the binding strength, electron spins state of metal ions, photoinduced charge transfer (PCT) and the rigidity of the complexing unit offered by calixarene‐based hosts. |
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| Keywords: | fluorescence zinc ion heterocalixaromatics titration chemosenser |
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