期刊
RSC ADVANCES
卷 7, 期 46, 页码 28637-28646出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ra04122e
关键词
-
资金
- International Science & Technology Cooperation Program of China [2015DFR40460]
- National Natural Science Foundation [81402896, 81573390]
- National HighTech Research and Development Program of China [2014AA022303]
In this research, we developed a multianalyte fluorescence sensing system through a carbon dots (CDs)-based fluorescent probe that can specifically recognize Fe(III) by fluorescence quenching. The CDs prepared using black tea by a hydrothermal method show outstanding properties like low cytotoxicity, high photostability, excellent biocompatibility, and high sensitivity. It was found that the fluorescence of CDs can be quenched by micromolar concentrations of Fe( III) in both aqueous solutions as well as living cells. It is well known that glucose can be oxidized by glucose oxidase (GOx) to release H2O2, which, in turn, can oxidize Fe(II) to Fe( III). Based on this consideration, a multianalyte sensing system was established. Therefore the quantitative analysis of Fe( III), H2O2, and glucose with detection limits of 0.25 mu M, 0.82 mu M, and 1.71 mu M, respectively, was achieved by the simple and cost-effective multianalyte CDs sensing system constructed. The sensing system showed high photostability and negligible cytotoxicity toward HeLa cells, which enables it to be applied in the visualization of Fe(III) or H2O2 in living cells. The system was further applied in the detection of Fe(III) or glucose in human serum, and satisfactory results were obtained.
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