Nitrogen-Doped Carbon Nanodots Produced by Femtosecond Laser Synthesis for Effective Fluorophores.
Journal
ACS omega
ISSN: 2470-1343
Titre abrégé: ACS Omega
Pays: United States
ID NLM: 101691658
Informations de publication
Date de publication:
01 Mar 2022
01 Mar 2022
Historique:
received:
14
11
2021
accepted:
03
02
2022
entrez:
7
3
2022
pubmed:
8
3
2022
medline:
8
3
2022
Statut:
epublish
Résumé
Understanding the effect of heteroatom doping is crucial for the design of carbon nanodots (CNDs) with enhanced luminescent properties for fluorescence imaging and light-emitting devices. Here, we study the effect and mechanisms of luminescence enhancement through nitrogen doping in nanodots synthesized by the bottom-up route in an intense femtosecond laser field using the comparative analysis of CNDs obtained from benzene and pyridine. We demonstrate that laser irradiation of aromatic compounds produces hybrid nanoparticles consisting of a nanocrystalline core with a shell of surface-bonded aromatic rings. These nanoparticles exhibit excitation-dependent visible photoluminescence typical for CNDs. Incorporation of nitrogen into pyridine-derived CNDs enhances their luminescence characteristics through the formation of small pyridine-based fluorophores peripherally bonded to the nanoparticles. We identify oxidation of surface pyridine rings as a mechanism of formation of several distinct blue- and green-emitting fluorophores in nanodots, containing pyridine moieties. These findings shed additional light on the nature and formation mechanism of effective fluorophores in nitrogen-doped carbon nanodots produced by the bottom-up route.
Identifiants
pubmed: 35252675
doi: 10.1021/acsomega.1c06413
pmc: PMC8892850
doi:
Types de publication
Journal Article
Langues
eng
Pagination
6810-6823Informations de copyright
© 2022 The Authors. Published by American Chemical Society.
Déclaration de conflit d'intérêts
The authors declare no competing financial interest.
Références
Nano Lett. 2015 Sep 9;15(9):6030-5
pubmed: 26269962
Chemphyschem. 2019 Apr 2;20(7):984-990
pubmed: 30723990
Chem Soc Rev. 2015 Jan 7;44(1):362-81
pubmed: 25316556
Nanoscale. 2017 Aug 31;9(34):12637-12646
pubmed: 28825435
Environ Sci Technol. 2014;48(1):649-55
pubmed: 24364496
Phys Chem Chem Phys. 2015 Sep 14;17(34):22361-6
pubmed: 26247890
J Am Chem Soc. 2007 Sep 19;129(37):11318-9
pubmed: 17722926
Carbon N Y. 2013 Nov;64:341-350
pubmed: 27570249
ACS Nano. 2014 Mar 25;8(3):2541-7
pubmed: 24517361
Beilstein J Nanotechnol. 2015 Jan 15;6:177-92
pubmed: 25671162
Opt Express. 2016 Jan 25;24(2):A312-40
pubmed: 26832584
J Am Chem Soc. 2006 Jun 21;128(24):7756-7
pubmed: 16771487
Nano Lett. 2017 Dec 13;17(12):7710-7716
pubmed: 29188711
Phys Chem Chem Phys. 2018 Jan 24;20(4):2251-2259
pubmed: 29303187
Nat Commun. 2017 Nov 9;8(1):1401
pubmed: 29123091
J Am Chem Soc. 2004 Oct 13;126(40):12736-7
pubmed: 15469243
Nat Nanotechnol. 2011 Aug 28;6(9):534
pubmed: 21873991
Nano Lett. 2015 Dec 9;15(12):8300-5
pubmed: 26566016
Materials (Basel). 2017 Nov 20;10(11):
pubmed: 29156648
ACS Nano. 2013 Dec 23;7(12):11234-41
pubmed: 24246067
Phys Chem Chem Phys. 2014 Aug 14;16(30):16075-84
pubmed: 24965696
J Phys Chem Lett. 2016 Sep 15;7(18):3695-702
pubmed: 27588560
ACS Nano. 2017 Dec 26;11(12):12402-12410
pubmed: 29136460
Chem Commun (Camb). 2016 Jan 14;52(4):819-22
pubmed: 26574881
Angew Chem Int Ed Engl. 2015 Apr 27;54(18):5360-3
pubmed: 25832292
Adv Sci (Weinh). 2019 Sep 30;6(23):1901316
pubmed: 31832313