摘要
以乙二醇辅助水热法制备了Dy^(3+),Cr^(3+)共掺杂ZnGa_2O_4的小尺寸、近红外长余辉纳米粒子(PLNPs)。通过优化反应条件、锌的比例和共掺杂稀土离子Dy^(3+)等措施,不仅提高了PLNPs的余辉发光性能,而且有效控制了PLNPs的粒径。结果表明,当起始溶液p H为7、Ga:Zn的比例为2:1.2、Dy^(3+)的掺杂量为1%时,所合成的PLNPs的尺寸在6 nm左右,而且具有良好的余辉发光性能,其近红外余辉时间大于72 h,在高信噪比生物医学成像中具有潜在应用价值。
Dy3＋, Cr3＋ co-doped ZnGa2O4 persistent luminescence nanoparticles （PLNPs） with long near-infrared afterglow were synthesized by an ethylene glycol assisted hydrothermal method. Persistent luminescence properties of the PLNPs are improved and size of the PLNPs is controlled efficiently via optimization of reaction condition, modification of zinc ratio and co-doping of Dy3＋ ion. The results show that the PLNPs have long afterglow time more than 72 h and small grain size of approximately 6 nm, when the pH of the reaction solution, Ga：Zn ratio and doping amount of Dy3＋ are 7, 2：1.2 and 1%, respectively. The as-prepared PLNPs exhibit great potential as a molecular probe for biomedical imaging with high signal to noise ratio.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
2016年第12期1363-1369,共7页
Journal of Inorganic Materials
基金
国家自然科学基金(21565017)
新疆维吾尔自治区高校科研计划资助项目(XJEDU2014I038)
喀什大学高层次人才科研启动经费项目(GCC15ZK-006)~~
关键词
镓酸锌
长余辉纳米颗粒
余辉发光时间
水热法
近红外
zinc gallate
persistent luminescence nanoparticles
afterglow time
hydrothermal method
near infrared
作者简介
阿不都卡德尔·阿不都克尤木（1980-），男，博士，副教授．E—mail：abdukadera@sina．com
