摘要
以极性较小的三异丙氧基铽为原料,选择与铽离子发光相匹配的乙酰丙酮为有机配体掺杂于苯乙烯(St)/少量的甲基丙烯酸甲酯(MMA)的混合单体中,通过原位本体聚合直接得到一类改性聚苯乙烯材料。并用红外光谱和紫外光谱表征其结构。可见光透过曲线表明这类改性聚苯乙烯材料具有高铽含量、高透过率的特点,用荧光光谱表征它们的荧光性能,结果表明:该材料在高铽含量下仍能发射很强的Tb3+离子的特征荧光,未出现明显的荧光猝灭现象。
A series of modified polystyrene containing terbium were prepared by in-situ bulk polymerization, with terbium tri-isopropoxyl oxide, acetyl acetone in the mixtures of methyl methacrylate and styrene. The products were characterized by infrared spectra （IR） and ultraviolet absorption spectra （UV）. The transmittance curves of the modified polystyrene with different terbium content showed that the modified polystyrene had high transparence and high terbium content. The fluorescence properties were characterized by fluorescence spectra. The result indicated that modified polystyrene with the high terbium content could exhibit strong characteristic luminescence of terbium ion and no significant emission concentration quenching was observed.
出处
《广州化学》
CAS
2008年第2期19-24,共6页
Guangzhou Chemistry
基金
福建省自然科学基金资助项目(E0510017
2006J0250)
科技厅资助项目(2005HZ01-5)
关键词
原位聚合
聚苯乙烯
荧光性质
in-situ polymerization, polystyrene, fluorescence properties
