期刊
ACS APPLIED NANO MATERIALS
卷 3, 期 10, 页码 10479-10486出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.0c02397
关键词
thermometry; lanthanides; luminescence; nanocomposite; bioimaging
资金
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico [305452/2019-3, 303129/2017-4]
- Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio de Janeiro [E-26/010.000978/2019, E-26/010.001550/2019]
The temperature of biological systems is an important parameter to be monitored during metabolic processes and treatment of diseases. In this scenario, optical thermometry generally involves the operation of the temperature sensor within one of the near-infrared biological windows, where light has its maximum depth of penetration. Here we propose a strategy involving lanthanide-doped inorganic nanocomposite phosphors in which the optical temperature sensing operation is feasible within all three near-infrared biological windows using a single thermometric system. Using low-power CW laser excitation at 808 nm, we achieved downshifted luminescence in Nd3+ (transitions F-4(3/2) -> I-4(9/2) and F-4(3/2) -> I-4(11/2)) and Er3+ (transition I-4(13/2) -> I-4(15/2)) doped in Y2O3 crystalline ceramic powders prepared by combustion synthesis. Using the valley-to-peak luminescence intensity ratio method, we estimated temperature sensitivity parameters to be as high as 0.45% K-1 at 298 K.
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