Luminescent properties of Eu(OA)3(TTA)/NBR composites prepared by in-situ reaction |
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引用本文: | 胡水,温世鹏,吴卫东,刘力.Luminescent properties of Eu(OA)3(TTA)/NBR composites prepared by in-situ reaction[J].中国稀土学报(英文版),2013,31(1):1-7. |
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作者姓名: | 胡水 温世鹏 吴卫东 刘力 |
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作者单位: | Key Laboratory of Carbon Fiber and Functional Polymer,Ministry of Education,Beijing University of Chemical Technology;State Key Laboratory of Organic-Inorganic Composites,Beijing University of Chemical Technology |
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基金项目: | Project supported by the Program for Changjiang Scholars and Innovative Research Team in University (PCSIRT, IRT0807);National Natural Science Foundation of China (51073008, 51103005);the Fundamental Research Funds for the Central Universities in China (ZY1103) |
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摘 要: | Eu(OA)3(TTA) (OA=cis-9-octadecenoic acid, TTA=4,4,4-trifluoro-1-(2-thienyl)-1,3-butanedione) complexes (Eu- complexes) containing the ligand OA with long molecular chains were synthesized. The Eu(OA)3(TTA) complexes and peroxide were added into nitrile-butadiene rubber (NBR) by mechanical shearing to get the uncured composites. The cured composites were obtained by vulcanizing the uncured composites at high temperature. The in-situ reaction including polymerization and grafting of Eu-complex took place at the curing process, which was verified by Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) observations showed the fine dispersion of Eu(OA)3(TTA) complex (Eu-complex) in the cured composites compared with the uncured ones. Fluorescent spectra and Judd-Ofelt parameters analysis revealed that the fluorescent intensity increased approximate linearly with the content of Eu- complex increasing due to the in-situ reaction and long molecular chains of OA. The fluorescent lifetime of composites was longer than that of original Eu-complexes.
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关 键 词: | rare earths oleic acid fluorescence in-situ reaction |
收稿时间: | 9 June 2011 |
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