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为了探索形貌和尺寸对配合物荧光性质的影响,以聚(乙烯基吡咯烷酮)为表面活性剂,制备了两种纳米稀土三元配合物[Eu(BA)3phen和Tb(acac)3phen].采用元素分析、透射电镜、红外吸收光谱、紫外-可见吸收光谱、X射线粉末衍射及X射线光电子能谱对所制备的纳米配合物进行表征.结果表明,所制备的配合物为纳米颗粒,聚(乙烯基吡咯烷酮)的存在能有效地抑制配合物团聚而形成大的颗粒.对纳米稀土配合物的荧光性质研究发现,在紫外光激发下,这两种纳米配合物能分别发射Eu3+和Tb3+离子的特征荧光,而且纳米配合物的荧光性能优于相应的普通配合物.
In order to explore the effect of morphology and size on the fluorescence properties of the complexes, two kinds of rare earth ternary complexes [Eu (BA) 3phen and Tb (acac) 3phen] were prepared by poly (vinylpyrrolidone) as surfactant. The prepared nanocomposites were characterized by elemental analysis, transmission electron microscopy, infrared absorption spectroscopy, UV-Vis absorption spectroscopy, X-ray powder diffraction and X-ray photoelectron spectroscopy.The results showed that the prepared complexes were nanoparticles, poly (Vinylpyrrolidone) can effectively inhibit the agglomeration of the complex to form large particles.Studies on the fluorescence properties of nano-rare earth complexes show that the two nano-complexes can emit Eu3 + and Tb3 + ions respectively under ultraviolet excitation Of the characteristic fluorescence, and the fluorescence of nanocomposites is better than the corresponding ordinary complexes.