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Zn-assisted modification of the chemical structure of N-doped carbon dots and their enhanced quantum yield and photostability

This article presents the Zn-assisted synthesis of N-doped carbon dots (N-CDs) with an enhanced quantum yield (QY) and photostability. There have been intensive studies to improve or tune the optical properties of carbon dots (CDs) to meet the demand for luminescent materials in various fields, incl...

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Autores principales: Yun, Sohee, Kang, Eun Soo, Choi, Jin-sil
Formato: Online Artículo Texto
Lenguaje:English
Publicado: RSC 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9419812/
https://www.ncbi.nlm.nih.gov/pubmed/36133412
http://dx.doi.org/10.1039/d2na00013j
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author Yun, Sohee
Kang, Eun Soo
Choi, Jin-sil
author_facet Yun, Sohee
Kang, Eun Soo
Choi, Jin-sil
author_sort Yun, Sohee
collection PubMed
description This article presents the Zn-assisted synthesis of N-doped carbon dots (N-CDs) with an enhanced quantum yield (QY) and photostability. There have been intensive studies to improve or tune the optical properties of carbon dots (CDs) to meet the demand for luminescent materials in various fields, including energy conversion, photocatalysis, bioimaging, and phototherapy. For these applications, the photostability of the CDs is also a critical factor, but the related studies are relatively less common. The Zn-assisted N-CDs (denoted as Zn:N-CDs) obtained by the addition of Zn(OAc)(2) to the precursors during the synthesis of N-CDs not only exhibited an enhanced quantum yield but also improved photostability compared to those of N-CDs. A comprehensive study of the chemical composition of Zn:N-CD and N-CD using X-ray photoelectron spectroscopy indicated a correlation between their chemical structure and photostability. Zn(OAc)(2), which acts as a catalytic reagent, induced the modification of chemical structures at the edges of carbogenic sp(2) domains, without being doped in N-CD, and the heteroatom–carbon bonds in Zn:N-CD seemed to be more resistant to light compared to those in N-CDs. The increased QY and photostability of Zn:N-CDs make them more suitable as an optical probe and they could be used in fingerprint identification. With Zn:N-CDs, the microstructure of fingerprints was confirmed clearly for a long duration effectively.
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spelling pubmed-94198122022-09-20 Zn-assisted modification of the chemical structure of N-doped carbon dots and their enhanced quantum yield and photostability Yun, Sohee Kang, Eun Soo Choi, Jin-sil Nanoscale Adv Chemistry This article presents the Zn-assisted synthesis of N-doped carbon dots (N-CDs) with an enhanced quantum yield (QY) and photostability. There have been intensive studies to improve or tune the optical properties of carbon dots (CDs) to meet the demand for luminescent materials in various fields, including energy conversion, photocatalysis, bioimaging, and phototherapy. For these applications, the photostability of the CDs is also a critical factor, but the related studies are relatively less common. The Zn-assisted N-CDs (denoted as Zn:N-CDs) obtained by the addition of Zn(OAc)(2) to the precursors during the synthesis of N-CDs not only exhibited an enhanced quantum yield but also improved photostability compared to those of N-CDs. A comprehensive study of the chemical composition of Zn:N-CD and N-CD using X-ray photoelectron spectroscopy indicated a correlation between their chemical structure and photostability. Zn(OAc)(2), which acts as a catalytic reagent, induced the modification of chemical structures at the edges of carbogenic sp(2) domains, without being doped in N-CD, and the heteroatom–carbon bonds in Zn:N-CD seemed to be more resistant to light compared to those in N-CDs. The increased QY and photostability of Zn:N-CDs make them more suitable as an optical probe and they could be used in fingerprint identification. With Zn:N-CDs, the microstructure of fingerprints was confirmed clearly for a long duration effectively. RSC 2022-03-10 /pmc/articles/PMC9419812/ /pubmed/36133412 http://dx.doi.org/10.1039/d2na00013j Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Yun, Sohee
Kang, Eun Soo
Choi, Jin-sil
Zn-assisted modification of the chemical structure of N-doped carbon dots and their enhanced quantum yield and photostability
title Zn-assisted modification of the chemical structure of N-doped carbon dots and their enhanced quantum yield and photostability
title_full Zn-assisted modification of the chemical structure of N-doped carbon dots and their enhanced quantum yield and photostability
title_fullStr Zn-assisted modification of the chemical structure of N-doped carbon dots and their enhanced quantum yield and photostability
title_full_unstemmed Zn-assisted modification of the chemical structure of N-doped carbon dots and their enhanced quantum yield and photostability
title_short Zn-assisted modification of the chemical structure of N-doped carbon dots and their enhanced quantum yield and photostability
title_sort zn-assisted modification of the chemical structure of n-doped carbon dots and their enhanced quantum yield and photostability
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9419812/
https://www.ncbi.nlm.nih.gov/pubmed/36133412
http://dx.doi.org/10.1039/d2na00013j
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AT choijinsil znassistedmodificationofthechemicalstructureofndopedcarbondotsandtheirenhancedquantumyieldandphotostability