聚合物包覆邻氨基苯甲酸铽配合物的制备与荧光性能

Preparation and Fluorescence Properties of Polymer-coating Complexes of Terbium with o-aminobenzoic Acid

采用直接沉淀工艺,在聚乙烯吡咯酮-乙烯乙酸酯(PVP-VAc)嵌段共聚物在溶剂中形成的微反应器中,制备出表面包覆有嵌段共聚物的邻氨基苯甲酸铽配合物。通过X射线衍射谱(XRD)、透射电子显微镜(TEM)、荧光光谱(LS)、紫外(UV)和红外(IR)光谱对表面包覆的纳米铁粉的结构和形貌进行了分析,并用荧光分光光度计分析了其发光性能。XRD表明所制备的配合物是与配体和氯化铽完全不同的新的晶体,TEM显示样品为形状很规则的长柱状体,长约为150nm,截面为100nm的正方形。LS表明聚合物包覆的邻氨基苯甲酸铽配合物具有很好的荧光性能。紫外光谱说明配合物的紫外吸收主要表现为配体的吸收,红外光谱的分析说明邻氨基苯甲酸铽配合物表面包覆了PVP-VAc嵌段共聚物。

The polymer-coating complex of terbium with o-aminobenzoic acid were prepared by direct precipitation in the micro-reactor formed by PVP-VAc block polymer.The products were characterized by X-ray diffraction（XRD）,transmission electron microscopy（TEM）,luminescence spectroscopy（LS）,Ultraviolet spectrum（UV） and infrared radiation spectra（IR）.XRD pattern shows that the as-prepared sample is new crystal material,which is different from the raw materials.TEM image indicates that the complexes is long cylinder with 150nm in length and 100nm×100nm in section.The LS result shows that the complexes of terbium exhibited excellent luminescence.The UV indicates that the sample absorption is the ligand absorption in the Ultraviolet band.IR analyses demonstrate that as-prepared sample were coated by PVP-VAc block polymer.