Photoluminescence tuning and energy transfer process from Tb3+ to Eu3+ in GPTMS/TEOS-derived organic/silica hybrid films

Autor: F. S. De Vicente, Dimas R. Vollet, Dario A. Donatti, P. Freddi, Adriano J. G. Otuka, Hermi F. Brito, Cleber Renato Mendonça, L.A.O. Nunes

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Scopus
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP

Made available in DSpace on 2018-12-11T17:17:43Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-05-01 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c630b60e79a161ac9d71e72d4617f0b0

Mass and Surface Fractal in Supercritical Dried Silica Aerogels Prepared with Additions of Sodium Dodecyl Sulfate

Autor: Amanda P. Perissinotto, Dario A. Donatti, Fabio S. de Vicente, Dimas R. Vollet, Carlos M. Awano

Publikováno v: Langmuir. 31:562-568

Silica wet gels were prepared from hydrolysis of tetraethoxysilane (TEOS) with additions of sodium dodecyl sulfate (SDS). The surfactant was removed after gelation. Wet gels exhibited mass-fractal structure with mass-fractal dimension D (typically ar

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d94e2b5a8be19ef6e917a98cf4ca688f
https://doi.org/10.1021/la504272g

About the thermal stability and pore elimination in the ordered hexagonal mesoporous silica SBA-15

Autor: Dimas R. Vollet, F. S. De Vicente, Dario A. Donatti, T. da Silveira, Carlos M. Awano

Publikováno v: Microporous and Mesoporous Materials. 190:227-233

Ordered hexagonal mesoporous silica was prepared using Pluronic P123 template and removal of the polymer by washing in ethanol. The thermal stability and the pore elimination was studied under heat treatment by a fixed time at 500, 600, 750, 825, 900

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::15ac092a222cd1728ea72a16bc15882f
https://doi.org/10.1016/j.micromeso.2014.02.023

Structure of Hydrophobic Ambient-Pressure-Dried Aerogels Prepared by Sonohydrolysis of Tetraethoxysilane with Additions of N,N-Dimethylformamide

Autor: Carlos M. Awano, Dario A. Donatti, Fabio S. de Vicente, William Chiappim, Dimas R. Vollet

Publikováno v: Langmuir. 30:1151-1159

Silica wet gels with the same silica content were prepared by the sonohydrolysis of tetraethoxysilane (TEOS) with additions of dimethylformamide (DMF). DMF plays a role in the overall hydrolysis/gelification/aging step of the sol-gel process, providi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1858a215bedadb25debb1f6b06fae77b
https://doi.org/10.1021/la403798t

Running holograms in azopolymer films

Autor: T. B. Mello, A. A. Freschi, Dario A. Donatti, Dimas R. Vollet, F. S. De Vicente

Publikováno v: Applied Physics B. 111:103-109

We report investigations on running holograms recorded in an azopolymer film made of a poly(methyl methacrylate) matrix doped with Disperse Red 1. Two-wave mixing experiments were carried out in the symmetrical transmission geometry. A stabilization

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0cec67bbdf32168d36076b2406b42309
https://doi.org/10.1007/s00340-012-5312-2