【摘要】 利用表面接枝改性法,丁二酸酐作修饰剂,对上转换无机发光材料进行了表面羧基修饰。傅立叶红外吸收光谱证明了羧基的存在,电导率法定量地检测了羧基的含量,热分析表明修饰羧基后材料的热失重过程,扫描电镜显示了修饰后上转换无机发光材料颗粒有的直径有所增加。沉降试验表明修饰羧基后的上转换发光材料在水溶液中的分散稳定性得到了提高。更多还原

【Abstract】 In this paper,it is researched that the surface of up-conversion luminescence was modified with carboxyl groups by surface grafting modification.butanedioic anhydride is used of finishing agent.FI-IR proved that the carboxyl groups are on the surface.The quantity of carboxyl groups is also ration detection in the way of conductivity.The process of material’s hot zero gravity is proclaimed in TGA.The diameter of modified up-conversion luminescence material is aggrandizement in SEM.In the settlement test,modified up-conversion luminescence materials have more favorable dispersion stability than un-modified materials.更多还原