键合型铕-十一烯酸-硅橡胶复合材料的合成及其荧光性能

Synthesis,Characterization and Fluorescence of a Bonding-type Eu-UA-siloxane Composite

以铕-十一烯酸配合物和含氢硅油为原料,在铂催化剂作用下制备稀土有机硅加成产物。对产物进行红外光谱和核磁共振分析。结果表明,配合物键接在有机硅高分子主链上,加成产物为一种键合型的铕-十一烯酸-硅橡胶复合材料。荧光光谱分析确定复合材料的最佳激发波长为393 nm;最强发射波长为616 nm,为铕离子的特征发射。同时,随着铕离子浓度的增大,复合材料没有荧光猝灭现象。

In this paper, a complex of rare earth europium （Eu） with Undecylenic acid （UA） was synthesized. Then the Eu-UA-siloxane composite was hydrosilylated from polyhydrosiloxane and the complex at the presence of Pt-catalyst, and characterized by means of FT-IR and 1H-NMR. The fluorescence spectra demonstrated that the composite was excited with a wavelength of 393 nm, exhibited the strongest emission at 616 nm. The fluorescence intensity of the composite increase linearly with the contents of europium increasing, no concentration quenching phenomenon was found.