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Evolution from unimolecular to colloidal-quantum-dot-like character in chlorine or zinc incorporated InP magic size clusters

Magic-sized clusters (MSCs) can be isolated as intermediates in quantum dot (QD) synthesis, and they provide pivotal clues in understanding QD growth mechanisms. We report syntheses for two families of heterogeneous-atom-incorporated InP MSCs that have chlorine or zinc atoms. All the MSCs could be d...

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Autores principales: Kwon, Yongju, Oh, Juwon, Lee, Eunjae, Lee, Sang Hyeon, Agnes, Anastasia, Bang, Gyuhyun, Kim, Jeongmin, Kim, Dongho, Kim, Sungjee
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7305325/
https://www.ncbi.nlm.nih.gov/pubmed/32561721
http://dx.doi.org/10.1038/s41467-020-16855-9
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author Kwon, Yongju
Oh, Juwon
Lee, Eunjae
Lee, Sang Hyeon
Agnes, Anastasia
Bang, Gyuhyun
Kim, Jeongmin
Kim, Dongho
Kim, Sungjee
author_facet Kwon, Yongju
Oh, Juwon
Lee, Eunjae
Lee, Sang Hyeon
Agnes, Anastasia
Bang, Gyuhyun
Kim, Jeongmin
Kim, Dongho
Kim, Sungjee
author_sort Kwon, Yongju
collection PubMed
description Magic-sized clusters (MSCs) can be isolated as intermediates in quantum dot (QD) synthesis, and they provide pivotal clues in understanding QD growth mechanisms. We report syntheses for two families of heterogeneous-atom-incorporated InP MSCs that have chlorine or zinc atoms. All the MSCs could be directly synthesized from conventional molecular precursors. Alternatively, each series of MSCs could be prepared by sequential conversions. 386-InP MSCs could be converted to F360-InP:Cl MSCs, then to F399-InP:Cl MSCs. Similarly, F360-InP:Zn MSCs could be converted to F408-InP:Zn MSCs, then to F393-InP:Zn MSCs. As the conversion proceeded, evolution from uni-molecule-like to QD-like characters was observed. Early stage MSCs showed active inter-state conversions in the excited states, which is characteristics of small molecules. Later stage MSCs exhibited narrow photoinduced absorptions at lower-energy region like QDs. The crystal structure also gradually evolved from polytwistane to more zinc-blende.
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spelling pubmed-73053252020-06-26 Evolution from unimolecular to colloidal-quantum-dot-like character in chlorine or zinc incorporated InP magic size clusters Kwon, Yongju Oh, Juwon Lee, Eunjae Lee, Sang Hyeon Agnes, Anastasia Bang, Gyuhyun Kim, Jeongmin Kim, Dongho Kim, Sungjee Nat Commun Article Magic-sized clusters (MSCs) can be isolated as intermediates in quantum dot (QD) synthesis, and they provide pivotal clues in understanding QD growth mechanisms. We report syntheses for two families of heterogeneous-atom-incorporated InP MSCs that have chlorine or zinc atoms. All the MSCs could be directly synthesized from conventional molecular precursors. Alternatively, each series of MSCs could be prepared by sequential conversions. 386-InP MSCs could be converted to F360-InP:Cl MSCs, then to F399-InP:Cl MSCs. Similarly, F360-InP:Zn MSCs could be converted to F408-InP:Zn MSCs, then to F393-InP:Zn MSCs. As the conversion proceeded, evolution from uni-molecule-like to QD-like characters was observed. Early stage MSCs showed active inter-state conversions in the excited states, which is characteristics of small molecules. Later stage MSCs exhibited narrow photoinduced absorptions at lower-energy region like QDs. The crystal structure also gradually evolved from polytwistane to more zinc-blende. Nature Publishing Group UK 2020-06-19 /pmc/articles/PMC7305325/ /pubmed/32561721 http://dx.doi.org/10.1038/s41467-020-16855-9 Text en © The Author(s) 2020, corrected publication 2021 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Kwon, Yongju
Oh, Juwon
Lee, Eunjae
Lee, Sang Hyeon
Agnes, Anastasia
Bang, Gyuhyun
Kim, Jeongmin
Kim, Dongho
Kim, Sungjee
Evolution from unimolecular to colloidal-quantum-dot-like character in chlorine or zinc incorporated InP magic size clusters
title Evolution from unimolecular to colloidal-quantum-dot-like character in chlorine or zinc incorporated InP magic size clusters
title_full Evolution from unimolecular to colloidal-quantum-dot-like character in chlorine or zinc incorporated InP magic size clusters
title_fullStr Evolution from unimolecular to colloidal-quantum-dot-like character in chlorine or zinc incorporated InP magic size clusters
title_full_unstemmed Evolution from unimolecular to colloidal-quantum-dot-like character in chlorine or zinc incorporated InP magic size clusters
title_short Evolution from unimolecular to colloidal-quantum-dot-like character in chlorine or zinc incorporated InP magic size clusters
title_sort evolution from unimolecular to colloidal-quantum-dot-like character in chlorine or zinc incorporated inp magic size clusters
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7305325/
https://www.ncbi.nlm.nih.gov/pubmed/32561721
http://dx.doi.org/10.1038/s41467-020-16855-9
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