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      Carbon Dots: A New Type of Carbon-Based Nanomaterial with Wide Applications

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      , ,
      ACS Central Science
      American Chemical Society

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          Abstract

          Carbon dots (CDs), as a new type of carbon-based nanomaterial, have attracted broad research interest for years, because of their diverse physicochemical properties and favorable attributes like good biocompatibility, unique optical properties, low cost, ecofriendliness, abundant functional groups (e.g., amino, hydroxyl, carboxyl), high stability, and electron mobility. In this Outlook, we comprehensively summarize the classification of CDs based on the analysis of their formation mechanism, micro-/nanostructure and property features, and describe their synthetic methods and optical properties including strong absorption, photoluminescence, and phosphorescence. Furthermore, the recent significant advances in diverse applications, including optical (sensor, anticounterfeiting), energy (light-emitting diodes, catalysis, photovoltaics, supercapacitors), and promising biomedicine, are systematically highlighted. Finally, we envisage the key issues to be challenged, future research directions, and perspectives to show a full picture of CDs-based materials.

          Abstract

          Carbon dots possessing various appealing properties such as good biocompatibility, high quantum yield, strong absorption, show promising optical, energy, and biomedicine applications.

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          Most cited references190

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          Electrophoretic analysis and purification of fluorescent single-walled carbon nanotube fragments.

          Arc-synthesized single-walled carbon nanotubes have been purified through preparative electrophoresis in agarose gel and glass bead matrixes. Two major impurities were isolated: fluorescent carbon and short tubular carbon. Analysis of these two classes of impurities was done. The methods described may be readily extended to the separation of other water-soluble nanoparticles. The separated fluorescent carbon and short tubule carbon species promise to be interesting nanomaterials in their own right.
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            Quantum-sized carbon dots for bright and colorful photoluminescence.

            We report that nanoscale carbon particles (carbon dots) upon simple surface passivation are strongly photoluminescent in both solution and the solid state. The luminescence emission of the carbon dots is stable against photobleaching, and there is no blinking effect. These strongly emissive carbon dots may find applications similar to or beyond those of their widely pursued silicon counterparts.
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              Highly photoluminescent carbon dots for multicolor patterning, sensors, and bioimaging.

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                Author and article information

                Journal
                ACS Cent Sci
                ACS Cent Sci
                oc
                acscii
                ACS Central Science
                American Chemical Society
                2374-7943
                2374-7951
                14 December 2020
                23 December 2020
                : 6
                : 12
                : 2179-2195
                Affiliations
                [1]State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University , Changchun 130012, P. R. China
                Author notes
                Article
                10.1021/acscentsci.0c01306
                7760469
                33376780
                3d10a253-8615-43fd-971c-52484701c6c1
                © 2020 American Chemical Society

                This is an open access article published under an ACS AuthorChoice License, which permits copying and redistribution of the article or any adaptations for non-commercial purposes.

                History
                : 28 September 2020
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