| Téléchargement | - Voir la version finale : Direct and indirect pathways of CdTeSe magic-size cluster isomerization induced by surface ligands at room temperature (PDF, 5.4 Mio)
- Voir les données supplémentaires : Direct and indirect pathways of CdTeSe magic-size cluster isomerization induced by surface ligands at room temperature (PDF, 5.0 Mio)
|
|---|
| DOI | Trouver le DOI : https://doi.org/10.1021/acscentsci.2c01394 |
|---|
| Auteur | Rechercher : Yang, Yusha; Rechercher : Shen, Qiu; Rechercher : Zhang, Chunchun; Rechercher : Rowell, Nelson1; Rechercher : Zhang, MengIdentifiant ORCID : https://orcid.org/0000-0002-2852-2527; Rechercher : Chen, XiaoqinIdentifiant ORCID : https://orcid.org/0000-0001-7328-2801; Rechercher : Luan, Chaoran; Rechercher : Yu, KuiIdentifiant ORCID : https://orcid.org/0000-0003-0349-2680 |
|---|
| Affiliation | - Conseil national de recherches du Canada. Centre de recherche en métrologie
|
|---|
| Bailleur de fonds | Rechercher : State Key Laboratory of Supramolecular Structure and Materials; Rechercher : Natural Science Foundation of Sichuan Province; Rechercher : National Natural Science Foundation of China |
|---|
| Format | Texte, Article |
|---|
| Sujet | cluster chemistry; colloids; isomerization; ligands; optical absorption |
|---|
| Résumé | The field of isomerization reactions for colloidal semiconductor magic-size clusters (MSCs) remains largely unexplored. Here, we show that MSCs isomerize via two fundamental pathways that are regulated by the acidity and amount of an incoming ligand, with CdTeSe as the model system. When MSC-399 isomerizes to MSC-422 at room temperature, the peak red-shift from 399 to 422 nm is continuous (pathway 1) and/or stepwise (pathway 2) as monitored in situ and in real time by optical absorption spectroscopy. We propose that pathway 1 is direct, with intracluster configuration changes and a relatively large energy barrier. Pathway 2 is indirect, assisted by the MSC precursor compounds (PCs), from MSC-399 to PC-399 to PC-422 to MSC-422. Pathway 1 is activated when PC-422 to MSC-422 is suppressed. Our findings unambiguously suggest that when a change occurs directly on a nanospecies, its absorption peak continuously shifts. The present study provides an in-depth understanding of the transformative behavior of MSCs via ligand-induced isomerization upon external chemical stimuli. |
|---|
| Date de publication | 2023-03-08 |
|---|
| Maison d’édition | American Chemical Society |
|---|
| Licence | |
|---|
| Dans | |
|---|
| Langue | anglais |
|---|
| Publications évaluées par des pairs | Oui |
|---|
| Exporter la notice | Exporter en format RIS |
|---|
| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
|---|
| Identificateur de l’enregistrement | e40d7c8b-12c3-4aa9-8009-d3f1ca2e35fd |
|---|
| Enregistrement créé | 2023-07-12 |
|---|
| Enregistrement modifié | 2023-07-13 |
|---|
