Dimedone‐decorated conjugated polymer: Tandem knoevenagel‐michael post‐modification synthesis and its application as optical probe for Hg2+ and ClO− in high‐water‐fraction mediums |
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| Authors: | Dalong Zhai Wei Shi Yonghai Hui Zhengfeng Xie |
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| Institution: | 1. Key Laboratory of Petroleum and Gas Fine Chemicals, Educational Ministry of China, School of Chemistry and Chemical Engineering, Xinjiang University, Urumqi, People's Republic of China;2. Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province, School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, People's Republic of China |
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| Abstract: | High‐efficiency, mild‐conditioned tandem Knoevenagel–Michael reaction was utilized to post‐modify aldehyde‐containing, triphenylamine‐based precursor conjugated polymer ( CP1 ) to afford dimedone‐decorated aimed polymer ( CP2) . The chemical structure of CP2 was verified by FTIR and 1H NMR analyses. With the introduction of aqueous Hg2+, fluorescence of CP2 in THF‐water mixture (V THF/V water = 1/100) (buffered with 5 mM sodium dihydrogen phosphate‐disodium hydrogen phosphate (PB), pH = 7.4) altered significantly, with the emission changed from blue to orange. Besides this, CP2 also displayed specific optical response to ClO? in another probing medium (V THF/V water = 1/100, buffered with 50 mM PBS (with NaCl in PB, pH = 7.4). The detailed probing process and the plausible detection mechanism of CP2 to Hg2+ and ClO? were systematically investigated here. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2017 , 55 , 1067–1076 |
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| Keywords: | Conjugated polymers Dimedone Sensors Hg2+ and ClO− Fluorescence |
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