| DOI | Resolve DOI: https://doi.org/10.1021/acs.inorgchem.0c03412 |
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| Author | Search for: Shen, Qiu; Search for: Luan, Chaoran; Search for: Rowell, Nelson1; Search for: Zhang, MengORCID identifier: https://orcid.org/0000-0002-2852-2527; Search for: Wang, Kun; Search for: Willis, Maureen; Search for: Chen, XiaoqinORCID identifier: https://orcid.org/0000-0001-7328-2801; Search for: Yu, KuiORCID identifier: https://orcid.org/0000-0003-0349-2680 |
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| Affiliation | - National Research Council of Canada. Metrology Research Centre
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| Funder | Search for: State Key Laboratory of Polymer Materials Engineering; Search for: State Key Laboratory of Supramolecular Structure and Materials; Search for: National Natural Science Foundation of China |
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| Format | Text, Article |
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| Subject | amines; chemical reactions; colloids,mixtures; optical absorption |
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| Abstract | We report the first observation of the reversible transformations that occur among three types of CdTe magic-size clusters (MSCs) in dispersion at room temperature and discuss our understanding of the transformation pathway. The reversible transformations were achieved with CdTe prenucleation stage samples, which were prepared with reactions of cadmium oleate [Cd(OA)₂] and tri-n-octylphosphine telluride in 1-octadecene and were then dispersed in mixtures of toluene and a primary amine at room temperature. Three types of OA-passivated CdTe MSCs evolved, exhibiting sharp optical absorption singlets peaking at 371, 417, and 448 nm. The MSCs and their immediate precursor compounds (PCs; with no sharp optical absorption) are labeled by the MSC absorption peak wavelengths. The transformation between MSC-371 and MSC-417 has a distinct isosbestic point at ∼385 nm and that between MSC-417 and MSC-448 at ∼430 nm. Our findings suggest that these PC-enabled reversible transformations occur through a process of quasi-isomerization, transforming between PCs and their counterpart MSCs, combined with substitution reactions that cause transformation between the two involved PCs. |
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| Publication date | 2021-03-25 |
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| Publisher | American Chemical Society |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 77160065-d48b-4e87-9c20-7a36aef894a5 |
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| Record created | 2023-04-24 |
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| Record modified | 2023-04-24 |
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