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Insights into Nucleation and Growth of Colloidal Quaternary Nanocrystals by Multimodal X-ray Analysis
[Image: see text] Copper chalcogenide nanocrystals find applications in photovoltaic inks, bio labels, and thermoelectric materials. We reveal insights in the nucleation and growth during synthesis of anisotropic Cu(2)ZnSnS(4) nanocrystals by simultaneously performing in situ X-ray absorption spectr...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American
Chemical Society
2021
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8291568/ https://www.ncbi.nlm.nih.gov/pubmed/33770436 http://dx.doi.org/10.1021/acsnano.0c08617 |
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author | Just, Justus Coughlan, Claudia Singh, Shalini Ren, Huan Müller, Oliver Becker, Pascal Unold, Thomas Ryan, Kevin M. |
author_facet | Just, Justus Coughlan, Claudia Singh, Shalini Ren, Huan Müller, Oliver Becker, Pascal Unold, Thomas Ryan, Kevin M. |
author_sort | Just, Justus |
collection | PubMed |
description | [Image: see text] Copper chalcogenide nanocrystals find applications in photovoltaic inks, bio labels, and thermoelectric materials. We reveal insights in the nucleation and growth during synthesis of anisotropic Cu(2)ZnSnS(4) nanocrystals by simultaneously performing in situ X-ray absorption spectroscopy (XAS) and small-angle X-ray scattering (SAXS). Real-time XAFS reveals that upon thiol injection into the reaction flask, a key copper thiolate intermediate species is formed within fractions of seconds, which decomposes further within a narrow temperature and time window to form copper sulfide nanocrystals. These nanocrystals convert into Cu(2)ZnSnS(4) nanorods by sequentially incorporating Sn and Zn. Real-time SAXS and ex situ TEM of aliquots corroborate these findings. Our work demonstrates how combined in situ X-ray absorption and small-angle X-ray scattering enables the understanding of mechanistic pathways in colloidal nanocrystal formation. |
format | Online Article Text |
id | pubmed-8291568 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | American
Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-82915682021-07-21 Insights into Nucleation and Growth of Colloidal Quaternary Nanocrystals by Multimodal X-ray Analysis Just, Justus Coughlan, Claudia Singh, Shalini Ren, Huan Müller, Oliver Becker, Pascal Unold, Thomas Ryan, Kevin M. ACS Nano [Image: see text] Copper chalcogenide nanocrystals find applications in photovoltaic inks, bio labels, and thermoelectric materials. We reveal insights in the nucleation and growth during synthesis of anisotropic Cu(2)ZnSnS(4) nanocrystals by simultaneously performing in situ X-ray absorption spectroscopy (XAS) and small-angle X-ray scattering (SAXS). Real-time XAFS reveals that upon thiol injection into the reaction flask, a key copper thiolate intermediate species is formed within fractions of seconds, which decomposes further within a narrow temperature and time window to form copper sulfide nanocrystals. These nanocrystals convert into Cu(2)ZnSnS(4) nanorods by sequentially incorporating Sn and Zn. Real-time SAXS and ex situ TEM of aliquots corroborate these findings. Our work demonstrates how combined in situ X-ray absorption and small-angle X-ray scattering enables the understanding of mechanistic pathways in colloidal nanocrystal formation. American Chemical Society 2021-03-26 2021-04-27 /pmc/articles/PMC8291568/ /pubmed/33770436 http://dx.doi.org/10.1021/acsnano.0c08617 Text en © 2021 American Chemical Society Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Just, Justus Coughlan, Claudia Singh, Shalini Ren, Huan Müller, Oliver Becker, Pascal Unold, Thomas Ryan, Kevin M. Insights into Nucleation and Growth of Colloidal Quaternary Nanocrystals by Multimodal X-ray Analysis |
title | Insights
into Nucleation and Growth of Colloidal Quaternary
Nanocrystals by Multimodal X-ray Analysis |
title_full | Insights
into Nucleation and Growth of Colloidal Quaternary
Nanocrystals by Multimodal X-ray Analysis |
title_fullStr | Insights
into Nucleation and Growth of Colloidal Quaternary
Nanocrystals by Multimodal X-ray Analysis |
title_full_unstemmed | Insights
into Nucleation and Growth of Colloidal Quaternary
Nanocrystals by Multimodal X-ray Analysis |
title_short | Insights
into Nucleation and Growth of Colloidal Quaternary
Nanocrystals by Multimodal X-ray Analysis |
title_sort | insights
into nucleation and growth of colloidal quaternary
nanocrystals by multimodal x-ray analysis |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8291568/ https://www.ncbi.nlm.nih.gov/pubmed/33770436 http://dx.doi.org/10.1021/acsnano.0c08617 |
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