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Covalent inorganic complexes enabled zinc blende to wurtzite phase changes in CdSe nanoplatelets
Phase changes in colloidal semiconductor nanocrystals (NCs) are essential in material design and device applications. However, the transition pathways have yet to be sufficiently studied, and a better understanding of the underlying mechanisms is needed. In this work, a complete ligand-assisted phas...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10664457/ https://www.ncbi.nlm.nih.gov/pubmed/38023525 http://dx.doi.org/10.1039/d3sc04296k |
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author | Kong, Xinke Ru, Lin Ge, Junjun Deng, Yalei Zhang, Pan-ke Wang, Yuanyuan |
author_facet | Kong, Xinke Ru, Lin Ge, Junjun Deng, Yalei Zhang, Pan-ke Wang, Yuanyuan |
author_sort | Kong, Xinke |
collection | PubMed |
description | Phase changes in colloidal semiconductor nanocrystals (NCs) are essential in material design and device applications. However, the transition pathways have yet to be sufficiently studied, and a better understanding of the underlying mechanisms is needed. In this work, a complete ligand-assisted phase transition from zinc blende (ZB) to wurtzite (WZ) is observed in CdSe nanoplatelets (NPLs). By monitoring with in situ absorption spectra along with electrospray ionization mass spectrometry (ESI-MS), we demonstrated that the transition process is a ligand-assisted covalent inorganic complex (CIC)-mediated phase transition pathway, which involves three steps, ligand exchange on ZB CdSe NPLs (Step 1), dissolution of NPLs to form CICs (Step 2), and conversion of CdSe–CIC assemblies to WZ CdSe NPLs (Step 3). In particular, CICs can be directly anisotropically grown to WZ CdSe NPL without other intermediates, following pseudo-first-order kinetics (k(obs) = 9.17 × 10(−5) s(−1)). Furthermore, we demonstrated that CICs are also present and play an essential role in the phase transition of ZnS NPLs from WZ to ZB structure. This study proposes a new crystal transformation pathway and elucidates a general phase-transition mechanism, facilitating precise functional nanomaterial design. |
format | Online Article Text |
id | pubmed-10664457 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-106644572023-11-08 Covalent inorganic complexes enabled zinc blende to wurtzite phase changes in CdSe nanoplatelets Kong, Xinke Ru, Lin Ge, Junjun Deng, Yalei Zhang, Pan-ke Wang, Yuanyuan Chem Sci Chemistry Phase changes in colloidal semiconductor nanocrystals (NCs) are essential in material design and device applications. However, the transition pathways have yet to be sufficiently studied, and a better understanding of the underlying mechanisms is needed. In this work, a complete ligand-assisted phase transition from zinc blende (ZB) to wurtzite (WZ) is observed in CdSe nanoplatelets (NPLs). By monitoring with in situ absorption spectra along with electrospray ionization mass spectrometry (ESI-MS), we demonstrated that the transition process is a ligand-assisted covalent inorganic complex (CIC)-mediated phase transition pathway, which involves three steps, ligand exchange on ZB CdSe NPLs (Step 1), dissolution of NPLs to form CICs (Step 2), and conversion of CdSe–CIC assemblies to WZ CdSe NPLs (Step 3). In particular, CICs can be directly anisotropically grown to WZ CdSe NPL without other intermediates, following pseudo-first-order kinetics (k(obs) = 9.17 × 10(−5) s(−1)). Furthermore, we demonstrated that CICs are also present and play an essential role in the phase transition of ZnS NPLs from WZ to ZB structure. This study proposes a new crystal transformation pathway and elucidates a general phase-transition mechanism, facilitating precise functional nanomaterial design. The Royal Society of Chemistry 2023-11-08 /pmc/articles/PMC10664457/ /pubmed/38023525 http://dx.doi.org/10.1039/d3sc04296k Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/ |
spellingShingle | Chemistry Kong, Xinke Ru, Lin Ge, Junjun Deng, Yalei Zhang, Pan-ke Wang, Yuanyuan Covalent inorganic complexes enabled zinc blende to wurtzite phase changes in CdSe nanoplatelets |
title | Covalent inorganic complexes enabled zinc blende to wurtzite phase changes in CdSe nanoplatelets |
title_full | Covalent inorganic complexes enabled zinc blende to wurtzite phase changes in CdSe nanoplatelets |
title_fullStr | Covalent inorganic complexes enabled zinc blende to wurtzite phase changes in CdSe nanoplatelets |
title_full_unstemmed | Covalent inorganic complexes enabled zinc blende to wurtzite phase changes in CdSe nanoplatelets |
title_short | Covalent inorganic complexes enabled zinc blende to wurtzite phase changes in CdSe nanoplatelets |
title_sort | covalent inorganic complexes enabled zinc blende to wurtzite phase changes in cdse nanoplatelets |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10664457/ https://www.ncbi.nlm.nih.gov/pubmed/38023525 http://dx.doi.org/10.1039/d3sc04296k |
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