Search Results - "Ribeiro, S. J. L"

Thermal characterization of bacterial cellulose-phosphate composite membranes by BARUD, H. S, RIBEIRO, C. A, CRESPI, Marisa S, MARTINES, M. A. U, DEXPERT-GHYS, J, MARQUES, R. F. C, MESSADDEQ, Y, RIBEIRO, S. J. L

“…Cellulose-phosphate composite membranes have been prepared from bacterial cellulose membranes (BC) and sodium polyphosphate solution. The structure and thermal…”
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Bacterial Cellulose-Hydroxyapatite Nanocomposites for Bone Regeneration by Gaspar, Ana Maria Minarelli, Saska, Sybele, Messaddeq, Y., Ribeiro, Sidney J. L., Marchetto, R., Barud, Hernane da Silva

“…The aim of this study was to develop and to evaluate the biological properties of bacterial cellulose-hydroxyapatite (BC-HA) nanocomposite membranes for bone…”
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Bacterial cellulose–silica organic–inorganic hybrids by Barud, H. S., Assunção, R. M. N., Martines, M. A. U., Dexpert-Ghys, J., Marques, R. F. C., Messaddeq, Y., Ribeiro, S. J. L.

“…Bacterial cellulose (BC) hydrated membranes present nanometric reticulated structure that can be used as a template in the preparation of new organic–inorganic…”
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Role of the reactive atmosphere during the sol–gel synthesis on the enhancing of the emission quantum yield of urea cross-linked tripodal siloxane-based hybrids by Freitas, Vânia T., Lima, P. P., Ferreira, R. A. S., Carlos, L. D., Pecoraro, E., Ribeiro, S. J. L., de Zea Bermudez, V.

“…Transparent monoliths and films of urea cross-linked tripodal siloxane-based hybrids (named tri-ureasils) were prepared by the sol–gel process, under…”
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Enhanced Eu3+ Emission in Aqueous Phosphotungstate Colloidal Systems: Stabilization of Polyoxometalate Nanostructures by Barbosa, A. J, Maia, L. J. Q, Montanari, B, Gonçalves, R. R, Messaddeq, Y, Ferreira, R. A. S, Carlos, L. D, Ribeiro, S. J. L

“…Luminescent Eu3+-containing polyphosphate−tungstate aqueous colloidal systems were prepared and studied as a function of the relative polyphosphate−tungstate…”
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Coordination of Eu3+ Ions in Siliceous Nanohybrids Containing Short Polyether Chains and Bridging Urea Cross-links by de Zea Bermudez, V, Sá Ferreira, R. A, Carlos, L. D, Molina, C, Dahmouche, K, Ribeiro, S. J. L

“…Infrared and photoluminescence spectroscopies have been used to investigate the local environment of the Eu3+ ions in luminescent sol−gel derived…”
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Bacterial cellulose membrane as flexible substrate for organic light emitting devices by Legnani, C., Vilani, C., Calil, V.L., Barud, H.S., Quirino, W.G., Achete, C.A., Ribeiro, S.J.L., Cremona, M.

“…Bacterial cellulose (BC) membranes produced by gram-negative, acetic acid bacteria ( Gluconacetobacter xylinus), were used as flexible substrates for the…”
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Bacterial cellulose–SiO2@TiO2 organic–inorganic hybrid membranes with self-cleaning properties by Monteiro, A. S., Domeneguetti, R. R., Wong Chi Man, M., Barud, H. S., Teixeira-Neto, E., Ribeiro, S. J. L.

“…This work reports the preparation of bacterial cellulose (BC) membranes with self-cleaning properties. SiO 2 @TiO 2 (anatase) spherical nanocomposites (around…”
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Photoinduced effect in Ga–Ge–S based thin films by Messaddeq, S.H., Li, M. Siu, Inoue, S., Ribeiro, S.J.L., Messaddeq, Y.

“…Glassy films of Ga 10Ge 25S 65 with 4 μm thickness were deposited on quartz substrates by electron beam evaporation. Photoexpansion (PE) (photoinduced increase…”
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Distributed feedback multipeak laser emission in Rhodamine 6G doped organic-inorganic hybrids by OLIVEIRA, D. C, MESSADDEQ, Y, DAHMOUCHE, K, RIBEIRO, S. J. L, GONCALVES, R. R, VESPERINI, A, GINDRE, D, NUNZI, J.-M

“…Organic-inorganic hybrid materials were prepared from an ureasil precursor (ureapropyltriethoxysilane designated as UPTES) and acrylic acid modified zirconium…”
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Visible to infrared energy conversion in Pr3+–Yb3+ co-doped fluoroindate glasses by Borrero-González, L.J., Galleani, G., Manzani, D., Nunes, L.A.O., Ribeiro, S.J.L.

“…•Good optical quality fluoroindate glasses have been prepared containing Pr3+ and Yb3+.•Potential application in c-Si solar cells with the conversion of…”
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Energy-Transfer Mechanisms and Emission Quantum Yields In Eu3+-Based Siloxane-Poly(oxyethylene) Nanohybrids by Sá Ferreira, R. A, Carlos, L. D, Gonçalves, R. R, Ribeiro, S. J. L, de Zea Bermudez, V

“…We report the energy-transfer mechanisms and emission quantum yield measurements of sol−gel-derived Eu3+-based nanohybrids. The matrix of these materials,…”
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Clustering of rare earth in glasses, aluminum effect: experiments and modeling by Monteil, A., Chaussedent, S., Alombert-Goget, G., Gaumer, N., Obriot, J., Ribeiro, S.J.L., Messaddeq, Y., Chiasera, A., Ferrari, M.

“…Luminescent spectra of Eu3+-doped sol–gel glasses have been analyzed during the densification process and compared according to the presence or not of aluminum…”
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Active planar waveguides based on sol-gel Er3+-doped SiO2-ZrO2 for photonic applications : Morphological, structural and optical properties by GONCALVES, R. R, GUIMARAES, J. J, FERRARI, J. L, MAIA, L. J. Q, RIBEIRO, S. J. L

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Influence of Ga incorporation on photoinduced phenomena in Ge–S based glasses by Ledemi, Y., Messaddeq, S.H., Skhripachev, I., Ribeiro, S.J.L., Messaddeq, Y.

“…To study the influence of Ga addition on photoinduced effect, GaGeS glasses with constant atomic ratio S/Ge = 2.6 have been prepared. Using Raman spectroscopy,…”
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Er3+-Based Diureasil Organic−Inorganic Hybrids by Molina, C, Ferreira, R. A. S, Poirier, G, Fu, Lianshe, Ribeiro, S. J. L, Messsaddeq, Y, Carlos, L. D

“…Erbium-doped organic−inorganic hybrids derived from different carboxylic acids (acetic, formic, and valeric) solvolysis have been prepared and characterized…”
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Elaboration of boehmite nano-powders by spray-pyrolysis by Caiut, J.M.A., Dexpert-Ghys, J., Kihn, Y., Vérelst, M., Dexpert, H., Ribeiro, S.J.L., Messaddeq, Y.

“…Boehmite (γ-AlOOH) synthesis have been investigated using a spray pyrolysis (SP) device starting from a stable sol of Al-tri- sec-butoxide peptized by nitric…”
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Full-Color Phosphors from Amine-Functionalized Crosslinked Hybrids Lacking Metal Activator Ions by Carlos, L. D., Sá Ferreira, R A., De Zea Bermudez, V., Ribeiro, S. J. L.

“…Sol–gel derived hybrids that contain OCH2CH2 (polyethylene glycol, PEG) repeat units grafted onto a siliceous backbone by urea, –NHC(=O)NH–, or urethane,…”
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Bifunctional silica nanoparticles for the exploration of biofilms of Pseudomonas aeruginosa by Mauline, L., Gressier, M., Roques, C., Hammer, P., Ribeiro, S.J.L., Caiut, J.M.A., Menu, M.-J.

“…Luminescent silica nanoparticles are frequently employed for biotechnology applications mainly because of their easy functionalization, photo-stability, and…”
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Rare earth doped SnO2 nanoscaled powders and coatings: enhanced photoluminescence in water and waveguiding properties by Gonçalves, R R, Messaddeq, Y, Aegerter, M A, Ribeiro, S J L

“…Luminescent Eu3+ and Er3+ doped SnO2 powders have been prepared by Sn4+ hydrolysis followed by a controlled growth reaction using a particle's surface modifier…”
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