Citation: Bai Zhiqun, Ren Xiangling, Gong Zhen, Hao Chenxi, Chen Yongmei, Wan Pingyu, Meng Xianwei. 11-Mercaptoundecanoic acid functionalized gold nanoclusters as fluorescent probes for the sensitive detection of Cu²⁺ and Fe³⁺ ions[J]. Chinese Chemical Letters, ;2017, 28(9): 1901-1904. doi: 10.1016/j.cclet.2017.05.005 shu

11-Mercaptoundecanoic acid functionalized gold nanoclusters as fluorescent probes for the sensitive detection of Cu²⁺ and Fe³⁺ ions

Bai Zhiqun ^a,b ,
Ren Xiangling ^b,, ,
Gong Zhen ^a,b ,
Hao Chenxi ^a,b ,
Chen Yongmei ^a,, ,
Wan Pingyu ^a ,
Meng Xianwei ^b,,

a.
National Fundamental Research Laboratory of New Hazardous Chemicals, Beijing University of Chemical Technology, Beijing 100029, China
b.
Laboratory of Controllable Preparation and Application of Nanomaterials, CAS Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China

Corresponding author: Ren Xiangling, renxiangling@mail.ipc.ac.cn Chen Yongmei, chenym@mail.buct.edu.cn Meng Xianwei, mengxw@mail.ipc.ac.cn
Received Date: 21 March 2017
Revised Date: 12 April 2017
Accepted Date: 19 April 2017
Available Online: 8 September 2017

Figures(4)

Metal ions are physiologically essential, but excessive metal ions may cause severe risk to plants and animals. Here, we prepared gold nanoclusters (Au NCs) protected by 11-mercaptoundecanoic acid (11-MUA), which have excellent fluorescence properties for the detection of metal ions. The results showed that the copper ions (Cu²⁺) and iron ions (Fe³⁺) in the solution have obvious quenching effect on the fluorescence intensity of Au NCs. The detection range of Fe³⁺ was 0.8-4.5 mmol/L (R²=0.992) and 4.5-11.0 μmol/L (R²=0.997). And Cu²⁺ has a lower linear range (0.1-1.0 μmol/L, R²=0.993). When EDTA was added into the reaction system, it was observed that the quenching effect of Cu²⁺ and Fe³⁺ on Au NCs showed different phenomenon. Then, the effect of metal ions on the fluorescence of Au NCs was investigated. The selective detection of Cu²⁺ was achieved by EDTA masking of Fe³⁺. In addition, we realized the metal ions detection application of Au NCs in the serum
- Gold nanoclusters,
- Copper ions,
- Iron ions,
- Detection
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沈阳化工大学材料科学与工程学院沈阳 110142

11-Mercaptoundecanoic acid functionalized gold nanoclusters as fluorescent probes for the sensitive detection of Cu2+ and Fe3+ ions

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11-Mercaptoundecanoic acid functionalized gold nanoclusters as fluorescent probes for the sensitive detection of Cu²⁺ and Fe³⁺ ions