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Issue 3, 2019
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Carbon dots: synthesis, formation mechanism, fluorescence origin and sensing applications

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Abstract

Carbon dots (CDs) have received an increasing amount of attention because of their significant advantages in terms of low toxicity, chemical inertness, tunable fluorescence, good water solubility, and physicochemical properties. Due to these desirable properties, they have been used in numerous fields, including chemo- and biosensing, fluorescence imaging, and drug delivery. In this review, we aim to demonstrate the recent progress in the green synthesis and formation mechanism of CDs, and provide guidance for developing CDs with the concepts of green chemistry. In addition, we discuss three kinds of most accepted luminescence origins: surface state, quantum confinement effect and molecular fluorescence. Finally, we systematically summarize the latest progress of CDs in fluorescence sensing applications, including both solution phase sensing and solid phase sensing. Furthermore, the challenges and future direction of CDs in this emerging field are discussed.

Graphical abstract: Carbon dots: synthesis, formation mechanism, fluorescence origin and sensing applications

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Publication details

The article was received on 29 Aug 2018, accepted on 07 Jan 2019 and first published on 08 Jan 2019


Article type: Tutorial Review
DOI: 10.1039/C8GC02736F
Green Chem., 2019,21, 449-471

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    Carbon dots: synthesis, formation mechanism, fluorescence origin and sensing applications

    M. L. Liu, B. B. Chen, C. M. Li and C. Z. Huang, Green Chem., 2019, 21, 449
    DOI: 10.1039/C8GC02736F

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