荧光标记用Sr2MgSi2O7∶Eu(2＋),Dy(3＋)纳米发光材料的研究  

Study on Sr_2MgSi_2O_7∶Eu^(2+),Dy^(3+) Nano Luminescent Materials Used for Fluorescent Labeling

作　　者：樊婧 周雪松 常石岩 蔡永丰 沈毅 

机构地区：[1]华北理工大学材料科学与工程学院,河北省无机非金属材料重点实验室,唐山063210

出　　处：《人工晶体学报》2017年第11期2183-2189,共7页Journal of Synthetic Crystals

基　　金：国家自然科学基金(51572069)

摘　　要：通过水热共沉淀法制备了Sr_2MgSi_2O_7∶Eu^(2+),Dy^(3+)纳米发光材料并对其进行表面修饰,研究了添加不同金属络合剂对样品粒径、分散性、发光性能的影响及表面修饰后样品的性能。通过X射线衍射分析,激发发射光谱及余辉性能测试研究了不同金属络合剂对Sr_2MgSi_2O_7∶Eu^(2+),Dy^(3+)结晶性能、发光性能的影响,通过SEM和TEM图分析研究了不同金属络合剂对颗粒粒径、分散性的影响,结果表明添加EDTA时样品结晶与发光性能良好且粒径为50~200 nm,为制备Sr_2MgSi_2O_7∶Eu^(2+),Dy^(3+)纳米发光颗粒的最佳添加剂。此外,将样品进行表面修饰后,通过红外光谱、Zeta电势分析研究了其官能团的连接情况和电势大小,通过纳米粒度分析、SEM和TEM图谱分析研究了表面修饰后样品的粒径分布、形貌以及核壳结构,结果表明样品表面修饰后成功包裹了SiO_2壳层,并通过悬浮测试证明了SiO_2包覆后的长余辉纳米粒子悬浮性能良好。The Sr2 MgSi2 07： Eu2 ＋,Dy3 ＋ nanometer luminescent materials were prepared by hydrothermal coprecipitation method and surface modification was carried out. The effects of different metal complexing agents on the particle size, dispersibility and luminescent properties of the samples and the properties of the samples after surface modification were studied. The effects of different metal complexing agents on the crystal properties and luminescent properties of Sr2 MgSi2 07 ： Eu2 ＋ ,Dy3＋ were studied by X-ray diffraction, excitation emission and afterglow properties. The effects of different metal complexing agents on the particle size and dispersibility of the particles were studied by SEM and TEM. The results show that the crystallization and luminescent properties of samples with adding EDTA are good and the particle size is 50-200 nm,which is the best additive for preparing Sr2MgSi207： Eu2＋,Dy3＋ nano-luminescent particles. In addition,after the surface modification of the sample,the connection of the functional group and the potential of the functional group were studied by infrared spectroscopy and Zeta potential analysis, The particle size distribution, morphology and core-shell structure of the surface modifiedsamples were studied by nano-particle size analysis, SEM and TEM. The results show that the Si02 shell is successfully coated on the surface of the sample, and the suspension performance of the long afterglow nanoparticles after Si02 coating is proved by the suspension test.

关 键 词：荧光标记 Sr2MgSi2O7∶Eu2+ Dy3+纳米发光材料 金属络合剂 表面修饰 

分 类 号：O484[理学—固体物理]