Red-emitting hybrid based on eu3+-dbm complex anchored on silica nanoparticles surface by carboxylic acid for biomarker application

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.creatorSantos, João A. O. [UNESP]-
Autor(es): dc.creatorMutti, Alessandra M. G. [UNESP]-
Autor(es): dc.creatorBispo-Jr, Airton G. [UNESP]-
Autor(es): dc.creatorPires, Ana M. [UNESP]-
Autor(es): dc.creatorLima, Sergio A. M. [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:44:39Z-
Data de disponibilização: dc.date.available2022-02-22T00:44:39Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2020-11-30-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.3390/ma13235494-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/205558-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/205558-
Descrição: dc.descriptionLuminescent organic-inorganic hybrids containing lanthanides (Ln3+) have been prominent for applications such as luminescent bio-probes in biological assays. In this sense, a luminescent hybrid based on dense silica (SiO2) nanospheres decorated with Eu3+ β–diketonate complexes using dibenzoylmethane (Hdbm) as a luminescent antenna was developed by using a hierarchical organization in four steps: (i) anchoring of 3-aminopropyltriethoxysilane (APTES) organosilane on the SiO2 surface, (ii) formation of a carboxylic acid ligand, (iii) coordination of Eu3+ to the carboxylate groups and (iv) coordination of dbm− to Eu3+. The hybrid structure was elucidated through the correlation of thermogravimetry, silicon nuclear magnetic resonance and photoluminescence. Results indicate that the carboxylic acid-Eu3+-dbm hybrid was formed on the surface of the particles with no detectable changes on their size or shape after all the four steps (average size of 32 ± 7 nm). A surface charge of −27.8 mV was achieved for the hybrid, assuring a stable suspension in aqueous media. The Eu3+ complex provides intense red luminescence, characteristic of Eu3+ 5D0→7FJ electronic transitions, with an intrinsic emission quantum yield of 38%, even in an aqueous suspension. Therefore, the correlation of luminescence, structure, particle morphology and fluorescence microscopy images make the hybrid promising for application in bioimaging.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionSchool of Technology and Sciences São Paulo State University (Unesp)-
Descrição: dc.descriptionInstitute of Biosciences Humanities and Exact Sciences São Paulo State University (Unesp)-
Descrição: dc.descriptionInstitute of Chemistry São Paulo State University (Unesp)-
Descrição: dc.descriptionSchool of Technology and Sciences São Paulo State University (Unesp)-
Descrição: dc.descriptionInstitute of Biosciences Humanities and Exact Sciences São Paulo State University (Unesp)-
Descrição: dc.descriptionInstitute of Chemistry São Paulo State University (Unesp)-
Descrição: dc.descriptionFAPESP: 2014/04907-3-
Descrição: dc.descriptionFAPESP: 2019/26103-7-
Descrição: dc.descriptionFAPESP: 2020/14749-7-
Descrição: dc.descriptionCAPES: 307385/2015-9-
Descrição: dc.descriptionCNPq: 307385/2015-9-
Formato: dc.format1-17-
Idioma: dc.languageen-
Relação: dc.relationMaterials-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectBioimaging-
Palavras-chave: dc.subjectFunctionalization-
Palavras-chave: dc.subjectLanthanide-
Palavras-chave: dc.subjectLuminescent material-
Palavras-chave: dc.subjectSiO2-
Palavras-chave: dc.subjectβ–diketone-
Título: dc.titleRed-emitting hybrid based on eu3+-dbm complex anchored on silica nanoparticles surface by carboxylic acid for biomarker application-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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