A naphthyridine based macrocyclic “switching on” fluorescent receptor for cadmium |
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| Authors: | Shyamaprosad Goswami Nirmal Kumar Das Krishnendu Aich Debabrata Sen |
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| Institution: | Department of Chemistry, Bengal Engineering and Science University, Shibpur, Howrah 711103, West Bengal, India |
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| Abstract: | A new macrocyclic receptor 1 having 1,8]-naphthyridine fluorophore is designed and synthesized for selective fluorescence sensing of Cd2+. Receptor 1 selectively responds to Cd2+ over other tested metal ions via a large enhancement of emission intensity due to the cation-induced CHEF (chelation enhanced fluorescence) effect. Receptor 1 although exhibits some affinity towards Zn2+, it selectively binds Cd2+ over Zn2+. Binding and selectivity were examined by 1H-NMR, fluorescence, UV-vis, mass and IR-spectroscopic techniques. |
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| Keywords: | Macrocyclic receptor Naphthyridine Fluorescence Cd2+ sensor |
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