A5088871980- Luminescence Properties of Advanced Materials
- Glass properties and applications
- Lanthanide and Transition Metal Complexes
- Advanced Cellulose Research Studies
- Solid State Laser Technologies
- Phase-change materials and chalcogenides
- Photonic Crystals and Applications
- Electrospun Nanofibers in Biomedical Applications
- Photorefractive and Nonlinear Optics
- Photonic and Optical Devices
- Silk-based biomaterials and applications
- Luminescence and Fluorescent Materials
- X-ray Diffraction in Crystallography
- Silicon Nanostructures and Photoluminescence
- Analytical Chemistry and Sensors
- Nonlinear Optical Materials Studies
- biodegradable polymer synthesis and properties
- Advanced Photocatalysis Techniques
- Crystallization and Solubility Studies
- Gas Sensing Nanomaterials and Sensors
- Silicone and Siloxane Chemistry
- Nanocomposite Films for Food Packaging
- Mesoporous Materials and Catalysis
- Polyoxometalates: Synthesis and Applications
- Bone Tissue Engineering Materials
Universidade Estadual Paulista (Unesp)
2016-2025
Universidade de São Paulo
2000-2025
Centro Universitário de Araraquara
2014-2024
Instituto de Botânica
2001-2021
Universidade Federal de Jataí
2021
Université d'Angers
2019
College Track
2019
Universidade Cidade de São Paulo
2016
Fundação de Apoio à Universidade Federal de São Paulo
2015
Universidade do Porto
2015
Interest in lanthanide-containing organic-inorganic hybrids has grown considerably during the last decade, with concomitant fabrication of materials tunable attributes offering modulated properties. The potential these relies on exploiting synergy between intrinsic characteristics sol-gel derived hosts (highly controlled purity, versatile shaping and patterning, excellent optical quality, easy control refractive index, photosensitivity, encapsulation large amounts isolated emitting centers...
Essentially all of the Ag nanowires reported in literature have sizes larger than 30 nm diameter. In this article, we report a simple and robust approach to synthesis with diameters below 20 aspect ratios over 1000 using one-pot polyol method. The took penta-twinned structure, they could be obtained rapidly (<35 min) high morphology purity (>85% as-obtained solid product) under atmospheric pressure. key success is restrain from lateral growth by employing both Br– ions poly(vinylpyrrolidone)...
Abstract The determination of temperature is essential in many applications the biomedical, technological, and industrial fields. Optical thermometry appears to be an excellent alternative for conventional electric sensors because it a non-contact method that offers fast response, electromagnetic passivity, high sensitivity. In this paper, we propose optical thermometer probe comprising Er 3+ /Yb co-doped tellurite glass attached tip fibre optically coupled laser source portable USB...
Room-temperature white light emission can be obtained from a family of europium-containing hybrid materials called di-ureasils—organically modified silicates in which oxyethylene chains different length are grafted by means urea crosslinks to the siliceous backbone. It is demonstrated that color may tuned either adjusting amount europium salt incorporated or varying excitation wavelength. The Judd–Ofelt intensity parameters and considered together with decay rates an interpretation physical...
Antimicrobial bacterial cellulose-silver nanoparticles composite membranes have been obtained by “in situ” preparation of Ag from hydrolytic decomposition silver nitrate solution using triethanolamine as reducing and complexing agent. The formation was evidenced the X-ray diffraction, scanning electron microscopy (SEM), transmission (TEM), absorption in UV-Visible (350 nm to 600 nm). Thermal mechanical properties together with swelling behavior for water were considered. TEA concentration...
The aim of this study was to develop and evaluate the biological properties bacterial cellulose-hydroxyapatite (BC-HA) nanocomposite membranes for bone regeneration. Nanocomposites were prepared from cellulose sequentially incubated in solutions CaCl 2 followed by Na HPO 4 . BC-HA evaluated noncritical defects rat tibiae at 1, 4, 16 weeks. Thermogravimetric analyses showed that amount mineral phase 40%–50% total weight. Spectroscopy, electronic microscopy/energy dispersive X-ray analyses,...
A nanocomposite based on bacterial cellulose (BC) and type I collagen (COL) was evaluated for in vitro bone regeneration. BC membranes were modified by glycine esterification followed cross-linking of employing 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide. Collagen incorporation studied spectroscopy analysis. X-Ray diffraction showed changes the crystallinity after incorporation. The elastic modulus tensile strength BC-COL decreased, while strain at failure a slight increase, even...
Organic–inorganic hybrids incarcerating Ln<sup>3+</sup>ions are a very promising class of materials for addressing the required challenges in LSC design to improve solar energy harvesting and, then, PV conversion.
This study compares a wound dressing based on bacterial cellulose/collagen (BC/COL) hydrogel in rat dorsum with commercial collagenase ointment and untreated wound. The was characterized by Scanning Electron Microscopy (SEM), Thermogravimetric Analysis (TGA), Fourier transformed - Infrared spectroscopy (FT-IR) X-ray diffraction (XRD). According to the In vivo test macroscopic evaluation, BC/COL showed better repair of wounds promoted statistically significant differences tissue between...
To address the problems associated with use of unsupported nanomaterials, in general, and molybdenum disulfide (MoS2), particular, we report preparation self-supported hybrid aerogel membranes that combine mechanical stability excellent textural properties bacterial nanocellulose (BC)-based organic macro/mesoporous scaffolds adsorption-cum-photocatalytic high contaminant removal performance MoS2 nanostructures. A controlled hydrothermal growth precise tuning synthetic parameters allowed us...
Among remarkable discoveries concerning propolis, such as antifungal, antiviral, and antioxidant activities, its anti-inflammatory, mainly antibacterial, properties deserve special attention when skin wound healing is concerned. Based on this knowing the distinctive performance of bacterial (BC) membranes healing, in work it proposed to demonstrate potent antimicrobial activity a novel propolis containing biocellulose membrane. The obtained propolis/BC membrane was able adsorb not only...
In this work, methylcellulose (MC) was produced from bacterial cellulose (BC), using dimethyl sulfate in a 3 h (MC3h) or 5 (MC5h) reaction under heterogeneous conditions, with reagent substitution at each hour.MC3h showed degree of (DS) 2.26 ± 0.13 and MC5h DS 2.33 0.05.The two samples were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray powder diffraction (XRD), differential thermal analysis (DTA), gravimetric (TGA), 13 C nuclear magnetic ressonance (NMR) 1 H NMR...