A bifunctional rhodamine derivative as chemosensor for recognizing Cu~(2+) and Hg~(2+) ions via different spectra |
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| Institution: | 1. State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing 211816, China;2. Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Republic of Korea;3. Department of Pharmaceutical Chemistry, V.L. College of Pharmacy, Raichur 584103, India;1. Department of Chemistry, University of Calcutta, 92 APC Road, Kolkata, 700009, India;2. Department of Chemistry, Dr. B. N. Dutta Smriti Mahavidyalaya, Burdwan, 713407, India;3. Molecular & Human Genetics Division, CSIR–Indian Institute of Chemical Biology, 4 Raja S.C. Mallick Road, Kolkata, 700032, India |
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| Abstract: | A new simple bifunctional chemosensor 1 based on rhodamine was synthesized by hydrazide and formylformic acid,which could detect Cu~(2+) and Hg~(2+) via dif ferent detecting methods in CH3 CN-HEPES buffer solution(20 mmol/L,pH 7.4)(1:9,v/v) respectively.When sensor 1 bound with Cu~(2+),it showed a colorimetric change,while a selective enhancement in fluorescence occurred upon 1 binding with Hg~(2+),resulting from the spirolatam-ring opening process.The binding modes of 1 with Cu~(2+) and Hg~(2+) were investigated based on UV,fluorescence change,ESI-Mass and Job's Plot data.Moreover,sensor 1 could selectively detect target ion in a mixed solution of Cu~(2+) and Hg~(2+),and the two metal ions do not inte rfere with each other in the process of detecting Cu~(2+) or Hg~(2+) with 1. |
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| Keywords: | Rhodamine Fluorescent sensor Colorimetric sensor Spirolatam-ring opening Mercury Copper |
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