Room-temperature formation of CdS magic-size clusters in aqueous solutions assisted by primary amines

Par Conseil national de recherches du Canada

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DOI	Trouver le DOI : https://doi.org/10.1038/s41467-020-18014-6
Auteur	Rechercher : Wan, Wushuang; Rechercher : Zhang, Meng Identifiant ORCID : https://orcid.org/0000-0002-2852-2527; Rechercher : Zhao, Min; Rechercher : Rowell, Nelson¹; Rechercher : Zhang, Chunchun; Rechercher : Wang, Shanling; Rechercher : Kreouzis, Theo Identifiant ORCID : https://orcid.org/0000-0003-2326-5338; Rechercher : Fan, Hongsong; Rechercher : Huang, Wen; Rechercher : Yu, Kui Identifiant ORCID : https://orcid.org/0000-0003-0349-2680
Affiliation	Conseil national de recherches du Canada. Centre de recherche en métrologie
Format	Texte, Article
Sujet	inorganic chemistry; nanoparticles; physical chemistry
Résumé	Aqueous-phase approaches to semiconductor CdS magic-size clusters (MSCs) and the formation pathway have remained relatively unexplored. Here, we report the demonstration of an aqueous-phase, room-temperature approach to CdS MSCs, together with an exploration of their evolution pathway. The resulting CdS MSCs display a sharp optical absorption peak at about 360 nm and are labeled MSC-360. With CdCl2 and thiourea as the respective Cd and S sources, and 3-mercarpotopropionic acid as the ligand, CdS MSC-360 develops in a mixture of a primary amine and water. We argue that the primary amine facilitates room-temperature decomposition of thiourea when CdCl2 is present, and the formation pathway of MSCs is similar to that in organic-phase approaches. Our findings show there is a viable avenue to room-temperature aqueous-phase formation of CdS MSCs. Providing explanations of the procedure developed including the formation of large aggregates, the present study represents an important advance towards a mechanistic understanding of nanocrystal synthesis.
Date de publication	2020-08-21
Maison d’édition	Nature
Licence	Creative Commons Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/deed.fr
Dans	Nature Communications 11, nº 1, 4199.
Langue	anglais
Publications évaluées par des pairs	Oui
Exporter la notice	Exporter en format RIS
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Identificateur de l’enregistrement	d2f0dd41-9666-4c7c-9f96-717ea67440de
Enregistrement créé	2021-05-20
Enregistrement modifié	2021-05-27

Date de modification :: 2024-07-18