RSS 1.0Artigos - Química Inorgânica - IQ
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Biopolymer random laser consisting of Rhodamine 6G and silica nanoparticles incorporated to bacterial cellulose
Dos Santos, M. V.
; ; Schiavon, J. V. ; Barud, H. S. ; ; Ribeiro, S. J.L. ; ; (2012 Conference on Lasers and Electro-Optics, CLEO 2012, 2012)
We demonstrate random lasing action in a biopolymer that has large potential for medical applications. The novel random laser consists of nanofibers of bacterial cellulose impregnated with silica nanoparticles and Rhodamine ... -
2D Thermal Maps Using Hyperspectral Scanning of Single Upconverting Microcrystals: Experimental Artifacts and Image Processing
; ; Serge-Correales, York E.; ; Ribeiro, Sidney J. L. ; (ACS Applied Materials and Interfaces, 2022) [Artigo]
Whereas lanthanide-based upconverting particles are promising candidates for several micro- and nanothermometry applications, understanding spatially varying effects related to their internal dynamics and interactions with ... -
Comment on “Reversible 3D optical data storage and information encryption in photo-modulated transparent glass medium”
; Nalin, Marcelo; Ribeiro, Sidney J. L. ; Messaddeq, Younes (Light: Science and Applications, 2022) [Carta]
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Low-cost bacterial nanocellulose-based interdigitated biosensor to detect the p53 cancer biomarker
; ; ; ; ; ; ; Ribeiro, Sidney J.L.; ; et al. (Biomaterials Advances, 2022) [Artigo]
Low-cost sensors to detect cancer biomarkers with high sensitivity and selectivity are essential for early diagnosis. Herein, an immunosensor was developed to detect the cancer biomarker p53 antigen in MCF7 lysates using ... -
Alzheimer's disease diagnosis based on detection of autoantibodies against Aβ using Aβ40 peptide in liposomes
; ; de Carvalho Bovolato, Ana Lívia; Schelp, Arthur Oscar ; Ribeiro, Sidney José Lima ; Deffune, Elenice ; (Clinica Chimica Acta, 2022) [Artigo]
Background: Alzheimer's disease (AD) is the most common form of dementia and affect more than 50 million people worldwide. Thus, there is a high demand by non-invasive methods for an early diagnosis. This work explores the ... -
Fabrication of Noncytotoxic Functional Siloxane-Coated Bacterial Cellulose Nanocrystals
; ; ; Sábio, Rafael M.; ; ; ; Ribeiro, Sidney J. L. ; ; et al. (ACS Applied Polymer Materials, 2022) [Artigo]
Bacterial cellulose nanocrystals (BCNC) stand out as versatile biocolloidal building blocks for materials that are high-performance, owing to their inherently high crystallinity and specific modulus and surface area, and ... -
Ultrafast cleaning of methylene blue contaminated water accelarating photocatalytic reaction rate of the BiVO4 nanoflakes under highly intense sunlight irradiation
Roy, Joy Sankar; ; Messaddeq, Younès (Journal of Photochemistry and Photobiology, 2021) [Artigo]
The sustainable rapid wastewater treatment process is the greatest challenge in the 21st century as the demand of fresh and clean water is increasing with growing population worldwide. Herein, an emergent technique to clean ... -
MIL-100(Fe) Sub-Micrometric Capsules as a Dual Drug Delivery System
Abuçafy, Marina Paiva; Frem, Regina Celia Galvao ; Polinario, Giulia ; Pavan, Fernando Rogerio ; ; ; ; ; Chiavacci, Leila Aparecida (International Journal of Molecular Sciences, 2022) [Artigo]
Nanoparticles of metal–organic frameworks (MOF NPs) are crystalline hybrid micro- or mesoporous nanomaterials that show great promise in biomedicine due to their significant drug loading ability and controlled release. ... -
Tandem Transesterification–Esterification Reactions Using a Hydrophilic Sulfonated Silica Catalyst for the Synthesis of Wintergreen Oil from Acetylsalicylic Acid Promoted by Microwave Irradiation
; ; ; ; Klein, Stanlei I.; ; ; (Molecules, 2022) [Artigo]
SiO2–SO3H, with a surface area of 115 m2/g and pore volume of 0.38 cm3g−1, and 1.32 mmol H+/g was used as a 20% w/w catalyst for the preparation of methyl salicylate (wintergreen oil or MS) from acetylsalicylic acid (ASA). ... -
Phase-sensitive radioluminescence and photoluminescence features in Tm3+-doped yttrium tantalates for cyan and white light generation
; Caixeta, Fábio José; ; ; (Dalton Transactions, 2022) [Artigo]
Radioluminescence and visible photoluminescence tunability features from a single Tm3+-doped yttrium tantalate phosphor prepared by a soft sol-gel method designed to afford cubic Y3TaO7 and monoclinic M′-YTaO4 crystalline ... -
SYNTHESIS, CHARACTERIZATION AND JUDD-OFELT ANALYSIS OF Eu(III) OR Sm(III) β-DIKETONATE COMPLEXES.
; ; ; Davolos, Marian R.; (Quimica Nova, 2021) [Artigo]
The lanthanide complexes [Ln(bmdm)3(L)] where Ln(III) = Eu and Sm were synthesized successfully using the diketone (1-(4-methoxyphenyl)-3-(4-tert-butylphenyl) propane-1,3-dione) (bmdm) and (L) = 1,10-phenanthroline (phen), ... -
Two-dimensional synthesis of silver nanoparticle in situ Langmuir films from the reduction of silver sulfadiazine
Assis, D. R.; Ueyama, V. N. ; Santos, C. C. ; Davolos, M. R. ; Jafelicci, M. (Thin Solid Films, 2022) [Artigo]
Two–dimensional (2D) arrangement of monodisperse metallic nanoparticles (NPs) has attracted attention because of the unique properties of this assembly. These properties offer new perspectives for several applications. ... -
Bioactive Material with Microorganisms can Enhance the Micronutrients Solubilization and Sulfate Availability from Low Reactive Sources: Insight for Application as Coating Fertilizer Granules
; ; Bortoletto-Santos, Ricardo; ; Ribeiro, Sidney J. L. ; ; Bevilaqua, Denise ; ; (Journal of Polymers and the Environment, 2022) [Artigo]
Fertilization is essential to provide suitable conditions for plant development and crop productivity, but the environmental cost of fertilizers is a drawback for achieving a sustainable agriculture. A potential alternative ... -
Europium-doped Zn-Al-LDH intercalated with 4-biphenylcarboxylate anion and undoped Zn-Al-LDH intercalated with its anionic Eu(III) complex: Structural and UV or X-ray excited luminescence properties
Saska Romero, João Henrique; Saito, Gustavo Pereira ; Cagnin, Flávia ; Cebim, Marco Aurélio ; Davolos, Marian Rosaly (Optical Materials, 2022) [Artigo]
Undoped and doped layered double hydroxides (LDH) were obtained by coprecipitation and the bca (biphenyl-4-carboxylate) anion or [Eu(bca)4]- intercalation by solvothermal post treatment. The three systems, (i) [Zn2Al1-xEux]NO3-LDH ... -
Biosynthesis and recent advances in production of bacterial cellulose
Donini, Ígor A.N.; de Salvi, Denise T.B. ; Fukumoto, Fabiana K. ; ; Barud, Hernane S. ; Marchetto, Reinaldo ; Messaddeq, Younes ; (Ecletica Quimica, 2010) [Artigo]
The present paper discusses the recent advances about the biosynthesis and production of bacterial cellulose (BC), from gram-negative, aerobic and acetic acid Gluconcetobacter xylinus (Gx). The BC differs from his vegetal ... -
Going Above and Beyond: A Tenfold Gain in the Performance of Luminescence Thermometers Joining Multiparametric Sensing and Multiple Regression
Maturi, Fernando E.; ; ; ; ; ; Ribeiro, Sidney J. L. ; (Laser and Photonics Reviews, 2021) [Artigo]
Luminescence thermometry has substantially progressed in the last decade, rapidly approaching the performance of concurrent technologies. Performance is usually assessed through the relative thermal sensitivity, Sr, and ... -
Chemical, spectroscopic characterization, molecular modeling and antibacterial activity assays of a silver (I) complex with succinic acid
; ; ; Cavicchioli, Maurício; Amaral Machado, Rachel Temperani ; Pavan, Fernando Rogério ; ; ; ; Massabni, Antonio Carlos (Ecletica Quimica, 2021) [Artigo]
A silver(I) complex with succinic acid in the form of succinate is presented. Chemical characterization confirms the molecular composition Ag2C4H4O4 for the complex. Infrared spectra suggest a bidentate coordination of ... -
Random laser generation in rhodamine-doped aerogel
; Pecoraro, Édison; Lima Ribeiro, Sidney José ; ; ; (Optics InfoBase Conference Papers, 2013) [Trabalho apresentado em evento]
Random Laser generation can give valuable information on the structure of diffuse materials. We demonstrate for the first time random laser generation from an aerogel matrix doped with rhodamine 6G. © OSA 2013. -
Rhodamine-doped aerogel random laser
; Pecoraro, Édison; Ribeiro, Sidney José Lima ; ; ; (Advanced Solid State Lasers, ASSL 2014, 2014) [Trabalho apresentado em evento]
Random Laser generation can give valuable information on the structure of diffuse materials. The aerogel matrix has knowingly a fractal organization. Here, random laser generation from an aerogel matrix doped with rhodamine ... -
Emissão quase branca de um complexo binuclear de disprósio(III) contendo dicarboxilatos
Lahoud, Marcelo G.; Davolos, Marian R. ; De Jesus, Caio A.S. ; Frem, Regina C. G. (Ecletica Quimica, 2013) [Artigo]
This work reports the synthesis and characterization of the novel [Dy2(dcpz)2(suc)(H2O)8](H2O)1.5 (dcpz = 3,5-dicarboxypyrazolate, suc = succinate). The structure should probably consist of a binuclear species in which ...