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Polyvinylpyrrolidone Nanofibers Encapsulating an Anhydrous Preparation of Fluorescent SiO(2)–Tb(3+) Nanoparticles
A novel anhydrous preparation of silica (SiO(2))-encapsulated terbium (Tb(3+)) complex nanoparticles has been investigated. The SiO(2)-Tb(3+) nanoparticles are incorporated in electrospun polyvinylpyrrolidone hybrid nanofibers. Transmission electron microscopy confirms that Tb(3+) complexes are unif...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6523366/ https://www.ncbi.nlm.nih.gov/pubmed/30986951 http://dx.doi.org/10.3390/nano9040510 |
Sumario: | A novel anhydrous preparation of silica (SiO(2))-encapsulated terbium (Tb(3+)) complex nanoparticles has been investigated. The SiO(2)-Tb(3+) nanoparticles are incorporated in electrospun polyvinylpyrrolidone hybrid nanofibers. Transmission electron microscopy confirms that Tb(3+) complexes are uniformly and stably encapsulated in or carried by nanosilica. The influence of pH on the fluorescence of Tb(3+) complexes is discussed. The properties, composition, structure, and luminescence of the resulting SiO(2)–Tb(3+) hybrid nanoparticles are investigated in detail. There is an increase in the fluorescence lifetime of SiO(2)–Tb(3+) nanoparticles and SiO(2)–Tb(3+)/polyvinylpyrrolidone (PVP) hybrid nanofibers compared with the pure Tb(3+) complexes. Due to the enhanced optical properties, the fluorescent hybrid nanofibers have potential applications as photonic and photoluminescent materials. |
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