Synthesis and fluorescence enhancement behavior of a novel fluorescent aqueous polyurethane emulsion DDAQ-TDI-PU |
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| Authors: | Xian Hai Hua b Xing Yuan Zhanga Jia Bing Daia a CAS |
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| Institution: | CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China ; School of Materials and Chemical Engineering, Anhui Institute of Architecture and Industry, Hefei 230022, China |
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| Abstract: | A novel fluorescent aqueous polyurethane emulsion DDAQ-TDI-PU was synthesized by blocking the anthraquinone moiety of 1,4-diamino-2,3-diphenoxyanthraquinone(DDAQ) into polyurethane chain using 2,4-tolylene diisocyanate(TDI),poly(propylene glycol) and 2,2-dimethylol propionic acid.The chain structure of DDAQ-TDI-PU was confirmed by means of Fourier transform infrared spectroscopy and UV-vis analysis.Comparing to the UV-vis spectrum of DDAQ,DDAQ-TDI-PU showed a hypsochromic shift from the absorption maxima of 518,558,609 nm to 510,548,586 nm,respectively.It was found that the fluorescence intensity of DDAQ-TDI-PU emulsion was enhanced greatly comparing with that of DDAQ.The fluorescence of DDAQ-TDI-PU was very stable not only for the long term storage but also for the fluorescence quencher. |
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| Keywords: | Polyurethane Aqueous emulsion 1 4-Diamino-2 3-diphenoxyanthraquinone Fluorescence enhancement |
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