Enhancing upconversion luminescence of NaYF4: Yb/Er nanocrystals by Mo3+ doping and their application in bioimaging

被引：66
作者：
Yin, Dongguang [1 ]
Wang, Chengcheng [1 ]
Ouyang, Juan [1 ]
Song, Kailin [1 ]
Liu, Bing [1 ]
Cao, Xianzhang [1 ]
Zhang, Lu [1 ]
Han, Yanlin [1 ]
Long, Xie [2 ]
Wu, Minghong [1 ]
机构：
[1] Shanghai Univ, Sch Environm & Chem Engn, Shanghai 200444, Peoples R China
[2] Yueyang Hosp Integrated Tradit Chinese & Western, Shanghai 200437, Peoples R China
来源：
DALTON TRANSACTIONS | 2014年 / 43卷 / 31期
基金：
中国国家自然科学基金;
关键词：
CORE/SHELL NANOPARTICLES; SIZE CONTROL; EMISSION; SHELL; PHASE; NANOSTRUCTURES; ENHANCEMENT; NALUF4; YB3+;
D O I：
10.1039/c4dt00172a
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Enhancement of upconversion luminescence is imperative for the applications of upconversion nanocrystals (UCNs). In this work, we investigated the upconversion luminescence enhancement of NaYF4:Yb/Er by Mo3+ ion doping. It was found that the upconversion luminescence intensities of the green and red emissions of UCNs co-doped with 10 mol% Mo3+ ions were enhanced by 6 and 8 times, respectively. This enhancement offers a potential increase in the overall detectability of upconversion nanocrystals. HeLa cell imaging using NaYF4:Yb/Er/Mo as luminescent probes showed bright upconversion fluorescence. Moreover, the Mo3+ doping endowed the UCNs with excellent paramagnetic behavior. It is expected that the as-prepared UCNs with a high upconversion luminescence and excellent paramagnetic properties could be promising bi-functional nanoprobes for sensitive multi-modal bioimaging and other optical applications.
引用
收藏
页码：12037 / 12043
页数：7
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