期刊
JOURNAL OF MATERIALS CHEMISTRY C
卷 4, 期 31, 页码 7397-7405出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6tc01671e
关键词
-
资金
- Spanish Government [MAT2013-47395-C4-1-4-R, TEC2014-55948-R]
- Catalan Authority [2014SGR1358]
- CMST COST Action [CM1403]
- Catalan Government [2015FI-B2 00136]
- ICREA Academia [2010ICREA-02]
Neodymium-doped monoclinic KGd(WO4)2 nanoparticles were synthesized by the Pechini sol-gel method. Under excitation at 808 nm, the 3 at% Nd:KGd(WO4) 2 nanoparticles exhibited strong emission bands at 883 nm and 1067 nm in the near infrared region range, corresponding to the F-4(3/2) -> I-4(9/2) and F-4(3/2) -> I-4(11/2) transitions of Nd3+, and lying in the first and second biological windows, respectively. Both emissions show promising properties for thermal sensing in this range of wavelengths. In fact, the thermal analysis of these nanoparticles indicated a linear ascent behavior of the fluorescence intensity ratio. The surface of these nanoparticles was functionalized by silanization using 3-aminopropyl-triethoxysilane as the coupling agent, allowing deagglomeration with particle sizes around 16 nm, which allowed dispersing them in water. In this form they were used for NIR imaging in the second biological window, achieving a penetration depth of 1 cm. Hence these nanoparticles are promising for nanothermometry and imaging applications in the second biological window.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据