Structural evolution study by solid-state NMR of photopolymerizable aluminophosphosilicate hybrid materials

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversité Laval-
Autor(es): dc.creatorCosta, Beatriz Helena-
Autor(es): dc.creatorTayama, Gabriel Toshiaki-
Autor(es): dc.creatorSantagneli, Silvia Helena-
Data de aceite: dc.date.accessioned2025-08-21T19:22:21Z-
Data de disponibilização: dc.date.available2025-08-21T19:22:21Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-09-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.jnoncrysol.2024.123105-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/304394-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/304394-
Descrição: dc.descriptionAluminophosphosilicate materials of composition (mol.%) xSiO2[(Al2O3)50–(P2O5)50]100-x were prepared through sol-gel method and heat-treated yielding non-crystalline materials. The structural evolution from the hybrid to heat-treated material as a function of the SiO2 content was studied by 13C, 29Si, 31P and 27Al solid-state NMR, infrared spectroscopies, X-ray diffraction and differential scanning calorimetry (DSC). NMR analyses showed the AlPO4 formation in the matrix and heterocondensation, forming Al-O-P and P-O-Si linkages. The heat treatment promoted the formation of a more interconnected SiO2 tetrahedra network as the SiO2 content increased. Similar to the hybrid materials, the increase of SiO2 content induces the replacement of P-O-Al(IV) bonds by Si-O-Al(IV) bonds in the heat-treated materials as confirmed by 27Al NMR and 27Al{31P} REDOR data, which was also supported by Raman analysis. This sol-gel route provides a novel way to fabricate new homogeneous materials, which can be doped with rare earths and applied to new optical devices.-
Descrição: dc.descriptionInstitute of Chemistry São Paulo State University (UNESP), SP-
Descrição: dc.descriptionCentre d'optique photonique et laser (COPL) Université Laval-
Descrição: dc.descriptionInstitute of Chemistry São Paulo State University (UNESP), SP-
Idioma: dc.languageen-
Relação: dc.relationJournal of Non-Crystalline Solids-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAluminophosphosilicate hybrid material-
Palavras-chave: dc.subjectSol-gel-
Palavras-chave: dc.subjectSolid-state NMR-
Título: dc.titleStructural evolution study by solid-state NMR of photopolymerizable aluminophosphosilicate hybrid materials-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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