期刊
ACS NANO
卷 5, 期 10, 页码 8040-8048出版社
AMER CHEMICAL SOC
DOI: 10.1021/nn202620u
关键词
bioimaging; ratiometric; upconversion luminescence; Hg2+
类别
资金
- National Science Foundation of China [20825101, 91027004]
- MOST of China [2011AA03A407]
- Shanghai Sci. Tech. Comm. [11XD1400200, 1052 nm03400]
- Shanghai Leading Academic Discipline Project [B108]
- CAS/SAFEA International Partnership Program for Creative Research Teams
- [IRT0911]
A chromophoric ruthenium complex-assembled nanophosphor (N719-UCNPs) was achieved as a highly selective water-soluble probe for upconversion luminescence sensing and bioimaging of intracellular mercury Ions. The prepared nanophosphors were characterized by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), energy-dispersive X-ray analysis (EDXA), Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS). Further application of N719-UCNPs in sensing Hg2+ was confirmed by optical titration experiment and upconversion luminescence live cell Imaging. Using the ratiometric upconversion luminescence as a detection signal, the detection limit of Hg2+ for this nanoprobe in water was down to 1.95 ppb, lower than the maximum level (2 ppb) of He2+ in drinking water set by the United States EPA. Importantly, the nanoprobe N719-UCNPs has been shown to be capable of monitoring changes in the distribution of Hg2+ in living cells by upconversion luminescence bioimaging.
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