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Facile Green Gamma Irradiation of Water Hyacinth Derived-Fluorescent Carbon Dots Functionalized Thiol Moiety for Metal Ion Detection

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Abstract

Fluorescent sensor-based carbon dots (CDs) have significantly developed for sensing metal ions because of their great physical and optical properties, including tunable fluorescence emission, high fluorescence quantum yield, high sensitivity, non-toxicity, and biocompatibility. In this research, a green synthetic approach via simple gamma irradiation for the carbon dot synthesis from water hyacinth was developed since water hyacinth has been classified as an invasive aquatic plant containing cellulose, hemicellulose, and lignin. The thiol moiety (SH) was further functionalized on the surface functional groups of CDs as the “turn-off” fluorescent sensor for metal ion detection. Fluorescence emission displayed a red shift from 451 to 548 nm when excited between 240 and 500 nm. The quantum yield of CDs-SH was elucidated to be 13%, with strong blue fluorescence emission under ultraviolet irridiation (365 nm), high photostability and no photobleaching. The limit of detection was determined at micromolar levels for Hg2+, Cu2+, and Fe3+. CDs-SH could be a real-time monitoring sensor for Hg2+ and Cu2+ as fluorescence quenching was observed within 2 min. Furthermore, paper test-strip based CDs-SH could be applied to detect these metal ions.

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Acknowledgements

This work was supported by Thailand Science Research and Innovation (TSRI) and partly supported by Reinventing University Project (RMUTT) 2022, Office of the Ministry of Higher Education, Science, Research and Innovation, Thailand Science Research and Innovation. P. Thangsunan was supported by the Center of Excellence in Materials Science and Technology, the Materials Science Research Center (MSRC), Faculty of Science, Chiang Mai University, Thailand. We would like to thank the Thailand Institute of Nuclear Technology (Public Organization) and RMUTT Central Lab, Institute of Research and Development, Rajamangala University of Technology Thanyaburi, for facility support.

Funding

This work was supported by Thailand Science Research and Innovation (TSRI) and partly supported by Reinventing University Project (RMUTT) 2022, Office of the Ministry of Higher Education, Science, Research and Innovation, Thailand Science Research and Innovation. P. Thangsunan was supported by the Center of Excellence in Materials Science and Technology, the Materials Science Research Center (MSRC), Faculty of Science, Chiang Mai University, Thailand.

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Authors and Affiliations

  1. Department of Chemistry, Faculty of Science and Technology, Rajamangala University of Technology Thanyaburi, Pathum Thani, 12110, Thailand

    Chuleekron Seesuea & Kanokorn Wechakorn

  2. Advanced Photochemical and Electrochemical Materials Research Unit, Faculty of Science and Technology, Rajamangala University of Technology Thanyaburi, Pathum Thani, 12110, Thailand

    Kanokorn Wechakorn

  3. Thailand Institute of Nuclear Technology (Public Organization), Nakorn Nayok, 26120, Thailand

    Tanagorn Sangtawesin

  4. Division of Biochemistry and Biochemical Innovation, Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand

    Pattanapong Thangsunan

  5. Center of Excellence in Materials Science and Technology, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand

    Pattanapong Thangsunan

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  1. Chuleekron Seesuea
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Methodology: Chuleekron Seesuea, Kanokorn Wechakorn; Formal analysis and investigation: Chuleekron Seesuea, Tanagorn Sangtawesin, Pattanapong Thangsunan; Writing - original draft preparation: Chuleekron Seesuea, Kanokorn Wechakorn; Writing - review and editing: Chuleekron Seesuea, Pattanapong Thangsunan, Tanagorn Sangtawesin, Kanokorn Wechakorn; Funding acquisition: Pattanapong Thangsunan, Tanagorn Sangtawesin, Kanokorn Wechakorn; Resources and Conceptualization: Kanokorn Wechakorn.

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Seesuea, C., Sangtawesin, T., Thangsunan, P. et al. Facile Green Gamma Irradiation of Water Hyacinth Derived-Fluorescent Carbon Dots Functionalized Thiol Moiety for Metal Ion Detection. J Fluoresc (2023). https://doi.org/10.1007/s10895-023-03408-8

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