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Issue 23, 2019
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Concentration-tuned multicolor carbon dots: microwave-assisted synthesis, characterization, mechanism and applications

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Abstract

New multicolor carbon dots made from D-fructose and NH4HCO3, denoted as F-CDs, have been synthesized via a time-saving and energy-saving microwave-assisted method. By just adjusting the concentration, the optimal emission wavelength of the F-CDs could be tuned from 404 nm to 583 nm. Furthermore, the sp2 carbon core and abundant functional groups provided the foundation for concentration-dependent photoluminescence properties. The relationship between the aggregation process and the concentration-induced photoluminescence mechanism is fully discussed. The maintenance of the F-CDs’ PL intensity with increasing concentration occurred by a mechanism similar to the crosslinked enhanced emission (CEE) effect. Finally, the highly stable and biocompatible multicolor F-CDs were successfully applied in fluorescent ink and multicolor bioimaging.

Graphical abstract: Concentration-tuned multicolor carbon dots: microwave-assisted synthesis, characterization, mechanism and applications

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Publication details

The article was received on 09 Mar 2019, accepted on 09 May 2019 and first published on 10 May 2019


Article type: Paper
DOI: 10.1039/C9NJ01233H
New J. Chem., 2019,43, 8950-8957

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    Concentration-tuned multicolor carbon dots: microwave-assisted synthesis, characterization, mechanism and applications

    X. Wang, X. Xu, M. Yang, P. Jiang, J. Zhao, F. Jiang and Y. Liu, New J. Chem., 2019, 43, 8950
    DOI: 10.1039/C9NJ01233H

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