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Fluorescent sensing platform based on polyethyleneimine-protected copper nanoclusters for detection of chromium(VI) in real samples |
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| Authors: | Mingyu Gan Yingqi Wang Fei Wang Jie Tan Yuheng Pei Jianhua Wang Martin M. F. Choi Wei Bian |
| Affiliation: | 1. Department of Basic Medicine, Shanxi Medical University, Taiyuan, China Contribution: Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Project administration, Software, Visualization, Writing - original draft, Writing - review & editing;2. School of Public Health, Shanxi Medical University, Taiyuan, China Contribution: Conceptualization, Data curation, Formal analysis, Methodology, Resources, Writing - original draft;3. Gastroenterology, Lvliang People's Hospital, Lvliang, China Contribution: Investigation, Methodology, Resources, Validation;4. Department of Traditional Chinese Medicine, First Hospital of Shanxi Medical University, Taiyuan, China Contribution: Investigation, Methodology, Supervision;5. Department of Neurology, Second Hospital of Shanxi Medical University, Taiyuan, China Contribution: Funding acquisition, Validation;6. Department of Basic Medicine, Shanxi Medical University, Taiyuan, China Contribution: Writing - original draft, Writing - review & editing;7. Bristol Chinese Christian Church, c/o Tyndale Baptist Church, Bristol, UK Contribution: Writing - review & editing;8. Department of Basic Medicine, Shanxi Medical University, Taiyuan, China |
| Abstract: | A new type of polyethyleneimine-protected copper nanoclusters (PEI-CuNCs) is favorably developed by a one-pot method under mild conditions. The obtained PEI-CuNCs is characterized by X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy, Fourier-transform infrared (FTIR) spectroscopy and other techniques. It is worth noting that the proposed PEI-CuNCs demonstrate a selective response to chromium(VI) over other competitive species. Fluorescence quenching of PEI-CuNCs is determined to be chromium(VI) concentrations dependence with a low limit of detection of 8.9 nM. What is more, the as-developed PEI-CuNCs is further employed in building a detection platform for portable recognition of chromium(VI) in real samples with good accuracy. These findings may offer a distinctive strategy for the development of methods for analyzing and monitoring chromium(VI) and expand their application in real sample monitoring. |
| Keywords: | chromium(VI) copper nanoclusters fluorescent probe polyethyleneimine |