Search Results - "GILBERTO F. DE SA"

Investigating the potential of metal-organic framework material as an adsorbent for matrix solid-phase dispersion extraction of pesticides during analysis of dehydrated Hyptis pectinata medicinal plant by GC/MS by Aquino, Adriano, Ferreira, Jordana Alves, Navickiene, Sandro, Wanderley, Kaline A, de Sá, Gilberto F, Júnior, Severino A

“…Metal-organic frameworks aluminum terephthalate MIL-53 and Cu-benzene-1,3,5-tricarboxylate (BTC) were tested for extraction of pyrimethanil, ametryn,…”
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TiO2@Silica nanoparticles in a random laser: Strong relationship of silica shell thickness on scattering medium properties and random laser performance by Jimenez-Villar, Ernesto, Mestre, Valdeci, de Oliveira, Paulo C., Faustino, Wagner M., Silva, D. S., de Sá, Gilberto F.

“…A TiO2@Silica nanoparticle has been introduced in a random laser. TiO2 particles with an average diameter of 0.41 μm were coated with silica shells of…”
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Tuning the catalytic activity of lanthanide-organic framework for the cyanosilylation of aldehydes by Batista, Poliane K., Alves, Danilo J.M., Rodrigues, Marcelo O., de Sá, Gilberto F., Junior, Severino A., Vale, Juliana A.

“…•LnMOF as heterogeneous catalysts for cyanosilylation of aldehydes.•Catalytic activity tuned by mild thermal treatment.•The efficiency of LnMOF as Lewis acid…”
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Lanthanide dithiocarbamate complexes: efficient catalysts for the cyanosilylation of aldehydes by Vale, Juliana A., Faustino, Wagner M., Menezes, Paulo H., Sá, Gilberto F. de

“…A new class of lanthanide dithiocarbamate complexes was used to promote the cyanosilylation of aldehydes at high yields at room temperature. This represents…”
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Multifunctional System Polyaniline-Decorated ZIF‑8 Nanoparticles as a New Chemo-Photothermal Platform for Cancer Therapy by Silva, Janine S. F, Silva, José Y. R, de Sá, Gilberto F, Araújo, Silvany S, Filho, Manoel A. Gomes, Ronconi, Célia M, Santos, Thiago C, Júnior, Severino A

“…Polyaniline-decorated ZIF-8 nanoparticles (nPANI@nZIF-8) were easily synthesized and employed as a multifunctional system for the delivery of the antitumor…”
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Single-Shot Biodiesel Analysis: Nearly Instantaneous Typification and Quality Control Solely by Ambient Mass Spectrometry by Abdelnur, Patricia V, Eberlin, Livia S, de Sá, Gilberto F, de Souza, Vanderlea, Eberlin, Marcos N

“…Using a simple and easily implemented desorption/ionization mass spectrometry technique, a tiny droplet of biodiesel placed on the surface of a sheet of paper…”
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Separation of isomeric disaccharides by traveling wave ion mobility mass spectrometry using CO2 as drift gas by Fasciotti, Maíra, Sanvido, Gustavo B., Santos, Vanessa G., Lalli, Priscila M., McCullagh, Michael, de Sá, Gilberto F., Daroda, Romeu J., Peter, Martin G., Eberlin, Marcos N.

“…The use of CO2 as a massive and polarizable drift gas is shown to greatly improve peak‐to‐peak resolution (Rp‐p), as compared with N2, for the separation of…”
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Modeling, Structural, and Spectroscopic Studies of Lanthanide-Organic Frameworks by Rodrigues, Marcelo O, Paz, Filipe A. Almeida, Freire, Ricardo O, de Sá, Gilberto F, Galembeck, André, Montenegro, Maria C. B. S. M, Araújo, Alberto N, Alves, S

“…In this paper, we report the hydrothermal synthesis of three lanthanide-organic framework materials using as primary building blocks the metallic centers Eu3+,…”
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Random Lasing at Localization Transition in a Colloidal Suspension (TiO2@Silica) by Jiménez-Villar, Ernesto, da Silva, Iran F, Mestre, Valdeci, Wetter, Niklaus U, Lopez, Cefe, de Oliveira, Paulo C, Faustino, Wagner M, de Sá, Gilberto F

“…Anderson localization of light and random lasing in this critical regime is an open research frontier, which besides being a basic research topic could also…”
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Enhancing the stability of Zn-metal-organic framework liquids through imidazolium zwitterionic ionic liquid: Creating long-stability network systems by Silva, Barbara E.M., de Sá, Gilberto F., Jesus, Larissa T., Junior, Wilson B., Júnior, Severino A.

“…[Display omitted] •A zwitterionic ionic liquid was used to form stable porous Zn-MOFs (LP/MOF) liquids.•Zn-MOFs were used at 1, 5 and 10 % (m/v) in the liquid,…”
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A Highly Effective Antioxidant and Artificial Marker for Biodiesel by Alberici, Rosana M, Simas, Rosineide C, Abdelnur, Patricia V, Eberlin, Marcos N, de Souza, Vanderléa, de Sá, Gilberto F, Daroda, Romeu J

“…Biodiesel is composed of saturated and unsaturated methyl esters of fatty acids formed via transesterification of vegetable oil or animal fat. This chemical…”
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Desorption/ionization efficiencies of triacylglycerols and phospholipids via EASI-MS by Fernandes, Anna Maria A. P., Fernandes, Gabriel D., Barrera-Arellano, Daniel, de Sá, Gilberto F., Lins, Roberto D., Eberlin, Marcos N., Alberici, Rosana M.

“…Knowledge of the major effects governing desorption/ionization efficiency is required for the development and application of ambient mass spectrometry…”
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Free and Total Glycerin in Biodiesel: Accurate Quantitation by Easy Ambient Sonic-Spray Ionization Mass Spectrometry by Fernandes, Anna Maria A. P, Tega, David U, Jara, Jose L. P, Cunha, Ildenize B. S, de Sá, Gilberto F, Daroda, Romeu J, Eberlin, Marcos N, Alberici, Rosana M

“…Quantitation of free and total glycerin content in biodiesel is performed via a simple and direct ambient desorption/ionization mass spectrometric technique…”
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New Homotrinuclear Lanthanide Complexes: Synthesis, Characterization and Spectroscopic Study by Silva, Wagner E, Freire Belian, Mônica, Freire, Ricardo O, de Sá, Gilberto F, Alves Jr, Severino

“…This work presents the synthesis and spectroscopic study of new homotrinuclear (TRI) systems for photonics applications. The luminescence spectroscopy shows…”
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Quantitation and Quality Control of Biodiesel/Petrodiesel (Bn) Blends by Easy Ambient Sonic-Spray Ionization Mass Spectrometry by Cunha, Ildenize B. S, Fernandes, Anna Maria A. P, Tega, David U, Simas, Rosineide C, Nascimento, Heliara L, de Sá, Gilberto F, Daroda, Romeu J, Eberlin, Marcos N, Alberici, Rosana M

“…Easy sonic-spray ionization mass spectrometry (EASI–MS) allows for direct and fast MS analysis of samples in ambient conditions with little or no sample…”
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Synthesis ( in situ) on organofunctionalized silica and spectroscopic study of Eu(III) complexes by de Farias, Robson F., de Freitas, Ana P.S., Belian, Mônica F., Malta, Oscar L., de Sá, Gilberto F., Alves, Severino

“…The complexes [Eu(eta) 2·(H 2O) 4]Cl and [Eu(eta) 2·(phen)·(H 2O) 2]Cl (eta = Etil 4,4,4-trifluoroacetoacetate; phen = 1,10-phenanthroline) are synthesized and…”
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Photoluminescence of Europium(III) Dithiocarbamate Complexes:  Electronic Structure, Charge Transfer and Energy Transfer by Faustino, Wagner M, Malta, Oscar L, Teotonio, Ercules E. S, Brito, Hermi F, Simas, Alfredo M, de Sá, Gilberto F

“…For the first time, we observed photoluminescence in Eu(III) dithiocarbamate complexes at room temperaturemore specifically in [Eu(Et2NCS2)3phen],…”
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Baseline resolution of isomers by traveling wave ion mobility mass spectrometry: investigating the effects of polarizable drift gases and ionic charge distribution by Lalli, Priscila M., Corilo, Yuri E., Fasciotti, Maíra, Riccio, Maria Francesca, de Sa, Gilberto F., Daroda, Romeu J., Souza, Gustavo H. M. F., McCullagh, Michael, Bartberger, Michael D., Eberlin, Marcos N., Campuzano, Iain D. G.

“…We have studied the behavior of isomers and analogues by traveling wave ion mobility mass spectrometry (TWIM‐MS) using drift‐gases with varying masses and…”
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Are Benzoic Acids Always More Acidic Than Phenols? The Case of ortho-, meta-, and para-Hydroxybenzoic Acids by Galaverna, Renan S., Bataglion, Giovana A., Heerdt, Gabriel, de Sa, Gilberto F., Daroda, Romeu, Cunha, Valnei S., Morgon, Nelson H., Eberlin, Marcos N.

“…To address the title question, the relative intrinsic acidities of phenol and benzoic acid as well as the isomeric family of ortho‐, meta‐, and…”
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MSPD METHOD FOR THE DETERMINATION OF CLOFENTEZINE, FLUMETRALIN, AND KRESOXIM-METHYL RESIDUES IN FRESH AND DEHYDRATED FORMS OF PLANTAGO MAJOR MEDICINAL PLANT BY HPLC/UV-DAD by dos Santos, Érica Silvia, Navickiene, Sandro, Wanderley, Kaline A., de Sá, Gilberto F., Júnior, Severino A.

“…A method was developed using matrix solid-phase dispersion (MSPD), together with liquid chromatography with ultraviolet diode array detector for determination…”
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