Copper-Ion-Assisted Precipitation Etching Method for the Luminescent Enhanced Assembling of Sulfur Quantum Dots

[Image: see text] In this study, we report a metal-ion-assisted precipitation etching strategy that can be used to manipulate the optical properties associated with the assembling of sulfur quantum dots (S dots) using copper ions. Transmission electron microscopy confirmed that the S dots were mainl...

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Autores principales: Li, Qi-Le, Shi, Lin-Xing, Du, Ke, Qin, Yong, Qu, Shu-Jie, Xia, De-Qian, Zhou, Zhen, Huang, Zeng-Guang, Ding, Shou-Nian
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2020
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7081439/
https://www.ncbi.nlm.nih.gov/pubmed/32201831
http://dx.doi.org/10.1021/acsomega.9b04465
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author Li, Qi-Le
Shi, Lin-Xing
Du, Ke
Qin, Yong
Qu, Shu-Jie
Xia, De-Qian
Zhou, Zhen
Huang, Zeng-Guang
Ding, Shou-Nian
author_facet Li, Qi-Le
Shi, Lin-Xing
Du, Ke
Qin, Yong
Qu, Shu-Jie
Xia, De-Qian
Zhou, Zhen
Huang, Zeng-Guang
Ding, Shou-Nian
author_sort Li, Qi-Le
collection PubMed
description [Image: see text] In this study, we report a metal-ion-assisted precipitation etching strategy that can be used to manipulate the optical properties associated with the assembling of sulfur quantum dots (S dots) using copper ions. Transmission electron microscopy confirmed that the S dots were mainly distributed within 50–80 nm and that they exhibited an ambiguous boundary. After the post-synthetic Cu(2+)-assisted modification was completed, the assisted precipitation-etching S dots (APE-S dots) were observed to exhibit a relatively clear boundary with a high fluorescence (FL) quantum yield (QY) of 32.8%. Simultaneously, the Fourier transform infrared radiation, X-ray photoelectron spectra, and time-resolved FL decay spectra were used to illustrate the improvement in the FL QY of the APE-S dots.
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spelling pubmed-70814392020-03-20 Copper-Ion-Assisted Precipitation Etching Method for the Luminescent Enhanced Assembling of Sulfur Quantum Dots Li, Qi-Le Shi, Lin-Xing Du, Ke Qin, Yong Qu, Shu-Jie Xia, De-Qian Zhou, Zhen Huang, Zeng-Guang Ding, Shou-Nian ACS Omega [Image: see text] In this study, we report a metal-ion-assisted precipitation etching strategy that can be used to manipulate the optical properties associated with the assembling of sulfur quantum dots (S dots) using copper ions. Transmission electron microscopy confirmed that the S dots were mainly distributed within 50–80 nm and that they exhibited an ambiguous boundary. After the post-synthetic Cu(2+)-assisted modification was completed, the assisted precipitation-etching S dots (APE-S dots) were observed to exhibit a relatively clear boundary with a high fluorescence (FL) quantum yield (QY) of 32.8%. Simultaneously, the Fourier transform infrared radiation, X-ray photoelectron spectra, and time-resolved FL decay spectra were used to illustrate the improvement in the FL QY of the APE-S dots. American Chemical Society 2020-03-03 /pmc/articles/PMC7081439/ /pubmed/32201831 http://dx.doi.org/10.1021/acsomega.9b04465 Text en Copyright © 2020 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes.
spellingShingle Li, Qi-Le
Shi, Lin-Xing
Du, Ke
Qin, Yong
Qu, Shu-Jie
Xia, De-Qian
Zhou, Zhen
Huang, Zeng-Guang
Ding, Shou-Nian
Copper-Ion-Assisted Precipitation Etching Method for the Luminescent Enhanced Assembling of Sulfur Quantum Dots
title Copper-Ion-Assisted Precipitation Etching Method for the Luminescent Enhanced Assembling of Sulfur Quantum Dots
title_full Copper-Ion-Assisted Precipitation Etching Method for the Luminescent Enhanced Assembling of Sulfur Quantum Dots
title_fullStr Copper-Ion-Assisted Precipitation Etching Method for the Luminescent Enhanced Assembling of Sulfur Quantum Dots
title_full_unstemmed Copper-Ion-Assisted Precipitation Etching Method for the Luminescent Enhanced Assembling of Sulfur Quantum Dots
title_short Copper-Ion-Assisted Precipitation Etching Method for the Luminescent Enhanced Assembling of Sulfur Quantum Dots
title_sort copper-ion-assisted precipitation etching method for the luminescent enhanced assembling of sulfur quantum dots
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7081439/
https://www.ncbi.nlm.nih.gov/pubmed/32201831
http://dx.doi.org/10.1021/acsomega.9b04465
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