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Imaging radial distribution functions of complex particles by relayed dynamic nuclear polarization

hal.structure.identifierEcole Polytechnique Fédérale de Lausanne [EPFL]
dc.contributor.authorBERRUYER, Pierrick
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorCIBAKA-NDAYA, Cynthia
hal.structure.identifierEcole Polytechnique Fédérale de Lausanne [EPFL]
dc.contributor.authorPINON, Arthur
hal.structure.identifierLaboratoire de Chimie de la Matière Condensée de Paris [LCMCP]
hal.structure.identifierInstitut d’Etudes Avancées de l’Université de Strasbourg - Institute for Advanced Study [USIAS]
dc.contributor.authorSANCHEZ, Clément
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDRISKO, Glenna
hal.structure.identifierEcole Polytechnique Fédérale de Lausanne [EPFL]
dc.contributor.authorEMSLEY, Lyndon
dc.date.issued2023
dc.identifier.issn0002-7863
dc.description.abstractEnThe physical properties of many modern multi-component materials are determined by their internal microstructure. Tools capable of characterizing complex nanoscale architectures in composite materials are, therefore, essential to design materials with targeted properties. Depending on the morphology and the composition, structures may be measured by laser diffraction, scattering methods, or by electron microscopy. However, it can be difficult to obtain contrast in materials where all the components are organic, which is typically the case for formulated pharmaceuticals, or multi-domain polymers. In nuclear magnetic resonance (NMR) spectroscopy, chemical shifts allow a clear distinction between organic components and can in principle provide the required chemical contrast. Here, we introduce a method to obtain radial images of the internal structure of multi-component particles from NMR measurements of the relay of nuclear hyperpolarization obtained from dynamic nuclear polarization. The method is demonstrated on two samples of hybrid core–shell particles composed of a core of polystyrene with a shell of mesostructured silica filled with the templating agent CTAB and is shown to yield accurate images of the core–shell structures with a nanometer resolution.
dc.description.sponsorshipInitiative d'excellence de l'Université de Bordeaux - ANR-10-IDEX-0003
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subject.enNanoparticles
dc.subject.enPolarization
dc.subject.enPorous materials
dc.subject.enQuantum mechanics
dc.subject.enSilicon
dc.title.enImaging radial distribution functions of complex particles by relayed dynamic nuclear polarization
dc.typeArticle de revue
dc.identifier.doi10.1021/jacs.3c01279
dc.subject.halChimie/Matériaux
dc.subject.halChimie/Chimie théorique et/ou physique
dc.description.sponsorshipEuropeBottom-up fabrication of nanostructured silicon-based materials with unprecedented optical properties
bordeaux.journalJournal of the American Chemical Society
bordeaux.page9700-9707
bordeaux.volume145
bordeaux.issue17
bordeaux.peerReviewedoui
hal.identifierhal-04092056
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04092056v1
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