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      Supra-(carbon nanodots) with a strong visible to near-infrared absorption band and efficient photothermal conversion

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          Abstract

          A novel concept and approach to engineering carbon nanodots (CNDs) were explored to overcome the limited light absorption of CNDs in low-energy spectral regions. In this work, we constructed a novel type of supra-CND by the assembly of surface charge-confined CNDs through possible electrostatic interactions and hydrogen bonding. The resulting supra-CNDs are the first to feature a strong, well-defined absorption band in the visible to near-infrared (NIR) range and to exhibit effective NIR photothermal conversion performance with high photothermal conversion efficiency in excess of 50%.

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          Generalized Gradient Approximation Made Simple.

          Gary H. Perdew, Ernzerhof, M Perdew … (1997)
          Article 0 comments Cited 2062 times – based on 0 reviews     Review now
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            A biocompatible fluorescent ink based on water-soluble luminescent carbon nanodots.

            Songnan Qu, Xiaoyun Wang, Qipeng Lu … (2012)
            Article 0 comments Cited 288 times – based on 0 reviews     Review now
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              Highly luminescent S, N co-doped graphene quantum dots with broad visible absorption bands for visible light photocatalysts.

              Dan Qu, Min Zheng, Peng Du … (2013)
              A facile hydrothermal synthesis route to N and S, N co-doped graphene quantum dots (GQDs) was developed by using citric acid as the C source and urea or thiourea as N and S sources. Both N and S, N doped GQDs showed high quantum yield (78% and 71%), excitation independent under excitation of 340-400 nm and single exponential decay under UV excitation. A broad absorption band in the visible region appeared in S, N co-doped GQDs due to doping with sulfur, which alters the surface state of GQDs. However, S, N co-doped GQDs show different color emission under excitation of 420-520 nm due to their absorption in the visible region. The excellent photocatalytic performance of the S, N co-doped GQD/TiO2 composites was demonstrated by degradation of rhodamine B under visible light. The apparent rate of S, N:GQD/TiO2 is 3 and 10 times higher than that of N:GQD/TiO2 and P25 TiO2 under visible light irradiation, respectively.
              Article 0 comments Cited 256 times – based on 0 reviews     Review now
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                Author and article information

                Journal
                Journal ID (nlm-ta): Light Sci Appl
                Journal ID (iso-abbrev): Light Sci Appl
                Title: Light, Science & Applications
                Publisher: Nature Publishing Group
                ISSN (Print): 2095-5545
                ISSN (Electronic): 2047-7538
                Publication date Collection: July 2016
                Publication date (Electronic preprint): 03 March 2016
                Publication date (Electronic): 01 July 2016
                Publication date PMC-release: 1 July 2016
                Volume: 5
                Issue: 7
                Page: e16120
                Affiliations
                [1 ]State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences , Changchun 130033, China
                [2 ]School of Stomatology, Jilin University , Changchun 130012, China
                Author notes
                Article
                Publisher Item ID: lsa2016120
                DOI: 10.1038/lsa.2016.120
                PMC ID: 6059947
                PubMed ID: 30167175
                SO-VID: 74da1166-8f5d-4d4c-afb3-d46bdde986b8
                Copyright © Copyright © 2016 CIOMP
                License:

                This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0/

                History
                Date received : 03 November 2015
                Date revision received : 29 February 2016
                Date accepted : 01 March 2016
                Categories
                Subject: Original Article

                Keywords: assembly,carbon nanodots,nir photothermal conversion,supra-(carbon nanodots),visible to nir absorption band
                Data availability:
                Keywords: assembly, carbon nanodots, nir photothermal conversion, supra-(carbon nanodots), visible to nir absorption band

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