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Shape control of CdSe/CdS nanocrystals during shell formation and growth: Dominating effects of surface ligands over core crystal structure

hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
hal.structure.identifierSouthern University of Science and Technology [SUSTech]
dc.contributor.authorHAO, Junjie
hal.structure.identifierSouthern University of Science and Technology [SUSTech]
hal.structure.identifierCity University of Hong Kong [Hong Kong] [CUHK]
dc.contributor.authorLIU, Haochen
hal.structure.identifierSouthern University of Science and Technology [SUSTech]
dc.contributor.authorDUAN, Xijian
hal.structure.identifierSouthern University of Science and Technology [SUSTech]
dc.contributor.authorZHOU, Ziming
hal.structure.identifierSouthern University of Science and Technology [SUSTech]
dc.contributor.authorZHAO, Bingxin
hal.structure.identifierSouthern University of Science and Technology [SUSTech]
hal.structure.identifierHainan University
dc.contributor.authorZHANG, Wenda
hal.structure.identifierShenzhen Planck Innovation Technologies Co. Ltd
dc.contributor.authorXU, Bing
hal.structure.identifierSouthern University of Science and Technology [SUSTech]
hal.structure.identifierShenzhen Planck Innovation Technologies Co. Ltd
dc.contributor.authorSUN, Xiao Wei
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDELVILLE, Marie-Hélène
dc.date.accessioned2023-11-20T17:26:23Z
dc.date.available2023-11-20T17:26:23Z
dc.date.issued2023
dc.identifier.issn2095-8226
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/185871
dc.description.abstractEnCdSe/CdS nanocrystals (NCs) are among the most studied semiconductor nanocrystals, yet there is still much information to be gained. This work reveals that core@shell NCs with different shapes are more controlled by the interaction between the NC surface and the capping ligands than the core concentration, but not at all by the difference in the crystalline nature of the core. Among the precursors, cadmium carboxylates promote an isotropic structure, while conversely, long-chain cadmium phosphonates favor an anisotropic one. Cadmium carboxylates are critical in the formation of the headshell, while cadmium phosphonates play a role in the anisotropic tail growth. Against expectations, the CdSe-core crystal structure (zinc blende or wurtzite) plays very little role in determining the structure of the final shape, which may be due to the two-stage CdS shell formation process, and gives rise to a tadpole shape. With appropriate capping ligands, precise control of the CdSe/CdS structures can be achieved in both shape formation and growth process. We claim, here, that CdSe/CdS with morphologies as different as tadpoles, nanoflowers, dot-in-rods, and tetrapods are obtained with only varying surface ligand ratios. This unique crystal-growth mechanism can be applied to other seed-mediated methods to produce aniso-tropic nanostructures.
dc.language.isoen
dc.publisherSpringer
dc.subject.enTadpole shape
dc.subject.enCdSe/CdS NCs
dc.subject.enShell growth control
dc.subject.enEffects of surface ligands
dc.subject.enCore crystal structure
dc.title.enShape control of CdSe/CdS nanocrystals during shell formation and growth: Dominating effects of surface ligands over core crystal structure
dc.typeArticle de revue
dc.identifier.doi10.1007/s40843-023-2481-1
dc.subject.halChimie/Matériaux
bordeaux.journalScience China Materials
bordeaux.page3621–3628
bordeaux.volume66
bordeaux.hal.laboratoriesInstitut de Chimie de la Matière Condensée de Bordeaux (ICMCB) - UMR 5026*
bordeaux.issue9
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionBordeaux INP
bordeaux.institutionCNRS
bordeaux.peerReviewedoui
hal.identifierhal-04171859
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04171859v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Science%20China%20Materials&rft.date=2023&rft.volume=66&rft.issue=9&rft.spage=3621%E2%80%933628&rft.epage=3621%E2%80%933628&rft.eissn=2095-8226&rft.issn=2095-8226&rft.au=HAO,%20Junjie&LIU,%20Haochen&DUAN,%20Xijian&ZHOU,%20Ziming&ZHAO,%20Bingxin&rft.genre=article


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