New chemosensory materials based on disubstituted polyacetylene with strong green fluorescence |
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| Authors: | Qi Zeng Jacky W Y Lam Cathy K W Jim Anjun Qin Jingui Qin Zhen Li Ben Zhong Tang |
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| Affiliation: | 1. Department of Chemistry, Hubei Key Lab on Organic and Polymeric Opto‐Electronic Materials, Wuhan University, Wuhan 430072, China;2. Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong |
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| Abstract: | A new imidazole‐containing disubstituted polyacetylene ( P1 ) with strong green fluorescence was successfully prepared through polymer reaction, which was nearly impossible to be obtained from the direct polymerization of its corresponding monomer. The polymer was soluble in common organic solvents, and its strong green fluorescence could be quenched completely by the Cu2+ and Co2+ ions, at the concentrations as low as 1.33 and 1.67 × 10−5 mol/L (0.85 and 0.92 ppm), respectively. Because of the high stability of the complex formed by cyanide and copper ions, the quenched green fluorescence of P1 by copper ions could be turned on upon the addition of trace cyanide (as low as 2.70 × 10−5 mol/L, 0.70 ppm), making P1 a new sensitive cyanide chemosensor. The results thus provided a new opportunity to develop anion chemosensors based on good cation chemosensors. © 2008 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 46: 8070–8080, 2008 |
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| Keywords: | chemosensor fluorescence functionalization of polymers polyacetylenes sensors |
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