Turn‐on fluorogenic and chromogenic detection of cations in complete water media with poly(N‐vinyl pyrrolidone) bearing rhodamine B derivatives as polymeric chemosensor |
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| Authors: | Tong‐Mou Geng Chang Guo Yan‐Jie Dong Meng Chen Yu Wang |
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| Affiliation: | 1. Anhui Key Laboratory of Functional Coordination Compounds, School of Chemistry and Chemical Engineering, Anqing Normal University, Anqing, China;2. Collaborative Innovation Center for Petrochemical New Materials, Anqing, Anhui, China;3. School of Resource and Environmental Science, Anqing Normal University, Anqing, China |
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| Abstract: | A hydrophobic organic monomer GRBE with a polymerizable methacrylester moiety had been synthesized by reaction of rhodamine B‐ethanediamine with glycidyl methacrylate. A water‐soluble polymeric chemosensor poly(VP‐GRBE) had been prepared via copolymerization with a hydrophilic comonomer (vinylpyrrolidone) and GRBE, which was able to sense environmentally poisonous cations in completely aqueous media. The chemosensor was a derivative of rhodamine B, which behaved as a fluorescent and chromogenic sensor toward various heavy cations, particularly Cr3+, Fe3+, and Hg2+. Titration curves of Cr3+, Fe3+, and Hg2+ were constructed using rapid, cheap, and widely available technique of fluorescence spectroscopies. The detection limits for Cr3+, Fe3+, or Hg2+ ions were found to be 2.20 × 10?12, 2.39 × 10?12, and 1.11 × 10?12 mol/l in the same medium, respectively. Moreover, a colorimetric response from the polymeric chemosensor permitted the detection of Cr3+, Hg2+, or Fe3+ by “naked eye” because of the development of a pink or brown yellow color when Cr3+, Hg2+, or Fe3+ cations interacted with the copolymer in aqueous media. Copyright © 2015 John Wiley & Sons, Ltd. |
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| Keywords: | fluorescent sensor water‐soluble polymer rhodamine B glycidyl methacrylate metal ion |
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