Polyamine-functionalized carbon nanodots: a novel chemiluminescence probe for selective detection of iron(III) ions

被引：40
|
作者：
Zhao, Lixia [1 ]
Geng, Fanglan [1 ]
Di, Fan [1 ]
Guo, Liang-Hong [1 ]
Wan, Bin [1 ]
Yang, Yu [1 ]
Zhang, Hui [1 ]
Sun, Guozhu [2 ]
机构：
[1] Chinese Acad Sci, Res Ctr Eco Environm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China
[2] Hebei Med Univ, Hosp 2, Dept Neurosurg, Shijiazhuang 050000, Peoples R China
来源：
RSC ADVANCES | 2014年 / 4卷 / 86期
关键词：
QUANTUM DOTS; WATER; PHOTOLUMINESCENCE; ENHANCEMENT; SYSTEM;
D O I：
10.1039/c4ra08071h
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We firstly studied the chemiluminescence behavior of branched poly(ethylenimine)-functionalized carbon dots (BPEI-CDs). The results demonstrated that BPEI-CDs can be used as a novel chemiluminescence probe in alkaline solution for rapid detection of iron(III) ions with high sensitivity and selectivity. A possible CL mechanism was studied by UV-Vis, fluorescence, CL, FTIR, XPS and EPR spectroscopy. Iron(III) could be selectively captured by the surface functional groups of BPEI and injected holes into the carbon dots which resulted in a great improvement of the BPEI-CDs' CL signal in alkaline solution. The work sheds new light on the characteristics and further application of functionalized carbon dots.
引用
收藏
页码：45768 / 45771
页数：4
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