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采用室温快速液相沉淀法制备了吡嗪四甲酸钐亚微米椭球配合物材料。通过红外光谱、能谱、扫描电子显微镜、紫外可见光谱和荧光光谱对制备的配合物进行了表征和性能测定。结果表明:溶液的pH值对产品的形貌和光致发光性能有重要的影响,通过调节溶液的p H值可以实现产品的形貌由纳米粒子到微米级椭球的有效调控。所有产品均在561,596,643 nm出现3条谱线,分别对应着钐离子的~4G_(5/2)→~6H_(5/2)、~4G_(5/2)→~6H_(7/2)和~4G_(5/2)→~6H_(9/2)的特征能级跃迁。当溶液的pH接近中性时,所制备的配合物样品的特征发射峰强度最大。
The samarium-submicron ellipsoidal pyrazinetetracarboxylic acid complex material was prepared by rapid liquid-phase precipitation at room temperature. The prepared complexes were characterized and characterized by infrared spectroscopy, energy dispersive spectroscopy, scanning electron microscopy, UV-visible spectroscopy and fluorescence spectroscopy. The results show that the pH value of the solution has an important influence on the morphology and photoluminescence properties of the product. By adjusting the p H value of the solution, the morphology of the product can be effectively controlled from nano-particles to micron ellipsoids. All products showed three lines at 561, 596, 643 nm corresponding to ~ 4G_ (5/2) → ~ 6H_ (5/2) ~ 4G_ (5/2) → ~ 6H_ (7/2) and ~ 4G_ (5/2) → ~ 6H_ (9/2). When the pH of the solution is near neutral, the prepared sample has the largest characteristic emission peak intensity.