Luminescent properties of Eu（OA）3（TTA）/NBR composites prepared by in-situ reaction
来源期刊：JOURNAL OF RARE EARTHS2013年第1期
论文作者：胡水 温世鹏 吴卫东 刘力
文章页码：1 - 7
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.
胡水1，温世鹏1,2，吴卫东1,2，刘力1,2
1. Key Laboratory of Carbon Fiber and Functional Polymer,Ministry of Education,Beijing University of Chemical Technology2. State Key Laboratory of Organic-Inorganic Composites,Beijing University of Chemical Technology
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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