Abstract
A novel colorimetric/fluorescent probe (AgNPs-GSH-Rh6G2) was prepared by linking silver nanoparticles (AgNPs) with rhodamine 6G derivative (Rh6G2) using glutathione (GSH) as a linker molecule. The prepared probe showed obvious fluorescence change and colorimetric response after adding copper ions. Based on this phenomenon, a colorimetric/fluorescence dual-mode detection method was constructed to recognize copper ions. The linear ranges of fluorescence detection and colorimetric detection were 0.10 to 0.45 mM and 0.15 to 0.65 mM, respectively, and the limit of detection were 0.18 μM and 24.90 μΜ. In addition, the dual-mode probe has achieved satisfactory results in the detection of copper ions in sediment samples. The successful construction of AgNPs-GSH-Rh6G2 not only provide a reliable tool for the detection of copper ions, but also shed light on a new idea for the multi-mode development of the detection platform.
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Data availability
The datasets used and/or analyzed during the current study are available from the corresponding author on reasonable request.
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Acknowledgements
The authors express appreciation to the Yunnan Minzu University and Deakin University for supporting this investigation. The authors would like to thank the anonymous reviewers and he editors. The authors thank Dr. Honglin Li et al. who synthesized the compound Rh6G2 in a previous study (Li et al. 2009b) for their work.
Funding
This work was supported by the National Natural Science Foundation of China (No. 22266036); The Yunnan Provincial Department of Science and Technology (No. 202105AC160055); The College Student Innovation and Entrepreneurship Training Project of China (2022).
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Guixiang Yao: Conceptualization, Investigation, Methodology, Data curation, Writing—original draft. Shuju Fang: Validation. Pengyuan Yin: Validation. Ailing Li: Validation. Wenrong Yang: Conceptualization, Funding acquisition. Hongbin Wang: Conceptualization, Supervision, Funding acquisition, Writing—review & editing. Wei Tan: Conceptualization, Supervision, Funding acquisition, Writing—review & editing. All authors read and approved the final manuscript.
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Yao, G., Fang, S., Yin, P. et al. A colorimetric and fluorometric dual-mode probe for Cu2+detection based on functionalized silver nanoparticles. Environ Sci Pollut Res (2023). https://doi.org/10.1007/s11356-023-29343-6
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DOI: https://doi.org/10.1007/s11356-023-29343-6