RSS 1.0Artigos - Química - FC
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Methyl divanillate: Redox properties and binding affinity with albumin of an antioxidant and potential NADPH oxidase inhibitor
De Vasconcelos, Debora Naliati
; ; ; ; Ferreira Boza, Izabelle Amorim ; De Souza, Aguinaldo Robinson ; ; Ximenes, Valdecir Farias (RSC Advances, 2019) [Artigo]
Vanillic acid is a widely used food additive (flavouring agent, JECFA number: 959) with many reported beneficial biological effects. The same is true for its ester derivative (methyl vanillate, JECFA number: 159). Based ... -
Polymorphism of gemfibrozil: Investigation by thermal and spectroscopic methods
Holanda, Bruno B.C.; Bannach, Gilbert ; ; ; (Thermochimica Acta, 2019) [Artigo]
The knowledge of polymorphism of active pharmaceutical ingredient is relevant in the pharmaceutical field. In this work, a multidisciplinary approach involving differential scanning calorimetry, polarized light thermal ... -
Synthesis of luminescent polymers in the UV light region from dimethacrylate monomer using novel quinoline dyes
Alarcon, Rafael Turra; dos Santos, Giovanny Carvalho ; de Oliveira, Arthur Rossi ; da Silva-Filho, Luiz Carlos ; Bannach, Gilbert (Journal of Applied Polymer Science, 2019) [Artigo]
This study aims at thermal and morphological features, as well as the degree of conversion these luminescent polymers obtained using a dimethacrylate monomer, and quinoline dyes as photoinitiator. The photoinitiators provide ... -
Correction to: Synthesis and characterization of a biopolymer of glycerol and macadamia oil (Journal of Thermal Analysis and Calorimetry, (2019), 137, 1, (161-170)
Pires, Osmar Antonio Baldo; Alarcon, Rafael Turra ; Gaglieri, Caroline ; da Silva-Filho, Luiz Carlos ; Bannach, Gilbert (Journal of Thermal Analysis and Calorimetry, 2019) [Errata]
In the original publication of the article, the Figures 6, 7, and 8 are in disagreement with their figure captions. Moreover, in the result and discussion section text the Fig 6 is called as Fig S2 (vibrational spectroscopy ... -
TiO 2 -catalyzed photodegradation of aromatic compounds: relevance of susceptibility to oxidation and electrophilic attack by hydroxyl radical
Spazzini, Fabiola Cristina Ricci; Ximenes, Thomaz Pol ; Ximenes, Valdecir Farias (Journal of Nanoparticle Research, 2018) [Artigo]
The application of nanostructured titanium dioxide (TiO 2 ) as catalyst for the photodegradation of drugs and dyes is well established. We aimed to evaluate the importance of the reactivity of aromatic compounds submitted ... -
Synthesis and characterization of a biopolymer of glycerol and macadamia oil
Pires, Osmar Antonio Baldo; Alarcon, Rafael Turra ; Gaglieri, Caroline ; da Silva-Filho, Luiz Carlos ; Bannach, Gilbert (Journal of Thermal Analysis and Calorimetry, 2019) [Artigo]
The main objective of this work was the synthesis of a polymer using a vegetable and renewable feedstock and following the green chemistry principles. The use of macadamia oil (extracted from Macadamia integrifolia nuts) ... -
Thermal studies, degradation kinetic, equilibrium solubility, DFT, MIR, and XRPD analyses of a new cocrystal of gemfibrozil and isonicotinamide
Holanda, Bruno B. C.; Alarcon, Rafael T. ; Gaglieri, Caroline ; de Souza, Aguinaldo R. ; ; ; ; Bannach, Gilbert (Journal of Thermal Analysis and Calorimetry, 2019) [Artigo]
A synthesis of a novel pharmaceutical cocrystal of the gemfibrozil (GEM) with the isonicotinamide (INCT) as coformer was carried out using the mechanochemical method of solvent drop grinding. The cocrystal formation was ... -
Interaction between 1-pyrenesulfonic acid and albumin: Moving inside the protein
Bertozo, Luiza de Carvalho; ; ; ; ; Ximenes, Valdecir Farias (Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, 2019) [Artigo]
Due to the high sensitivity to alterations in microenvironment polarity of macromolecules, pyrene and its derivatives have long been applied in biosciences. Human serum albumin (HSA), besides its numerous physiological ... -
Investigation of thermal degradation products of mebendazole by thermal and spectroscopic analysis
Holanda, Bruno B.C.; Alarcon, Rafael T. ; Guerra, Renan B. ; Rinaldo, Daniel ; Spazzini, Fabiola C.R. ; ; Bannach, Gilbert (Journal of Analytical and Applied Pyrolysis, 2018) [Artigo]
In this work, the thermal decomposition of mebendazole (MBZ) was studied to elucidate divergent data found in the literature concerning the thermal behavior of this drug. To this end, thermogravimetry-differential scanning ... -
Oxidative alteration of Trp-214 and Lys-199 in human serum albumin increases binding affinity with phenylbutazone: A combined experimental and computational investigation
Bertozo, Luiza de Carvalho; Tavares Neto, Ernesto ; de Oliveira, Leandro Cristante ; Ximenes, Valdecir Farias (International Journal of Molecular Sciences, 2018) [Artigo]
Human serum albumin (HSA) is a target for reactive oxygen species (ROS), and alterations of its physiological functions caused by oxidation is a current issue. In this work, the amino-acid residues Trp-214 and Lys-199, ... -
SPEEK-based proton exchange membranes modified with MOF-encapsulated ionic liquid
da Trindade, Letícia G.; ; ; ; ; ; ; ; ; (Materials Chemistry and Physics, 2019) [Artigo]
Ionic liquids (ILs) 1-butyl-3-methylimidazolium hydrogensulfate (BMI.HSO4), 1-butylimidazole hydrogensulfate (BImH.HSO4) and 3-triethylammonium propane sulfonic hydrogensulfate (TEA-PS.HSO4) were encapsulated in UiO-66 ... -
Synthesis and characterization of ZrO2@SiO2 core-shell nanostructure as nanocatalyst: Application for environmental remediation of rhodamine B dye aqueous solution
Padovini, D. S.S.; Magdalena, A. G. ; Capeli, R. G. ; ; ; ; Pontes, F. M. (Materials Chemistry and Physics, 2019) [Artigo]
ZrO2@SiO2 core-shell nanostructures were synthesized by a facile two-step hydrothermal plus Stöber chemical route. The structure, morphology and properties of the nanoparticles were characterized using X-ray powder diffraction ... -
Electrochemically-driven mineralization of Reactive Blue 4 cotton dye: On the role of in situ generated oxidants
; ; Magdalena, Aroldo G.; Angelo, Antonio Carlos Dias ; De Andrade, Adalgisa R. ; ; (Journal of Electroanalytical Chemistry, 2019) [Artigo]
Brazil is the fifth biggest global manufacturer of textiles and the fourth in cotton textile exports. Textile effluents contain organic dyes that are highly recalcitrant and difficult to oxidize by conventional physico-chemical ... -
Thermal analysis in oxidative and pyrolysis conditions of alkaline earth metals picolinates using the techniques: TG-DSC, DSC, MWTA, HSM and EGA (TG-DSC-FTIR and HSM-MS)
Nascimento, A. L.C.S.; ; ; Fernandes, R. P. ; Teixeira, J. A. ; Nunes, W. D.G. ; Ionashiro, M. ; Caires, F. J. (Journal of Analytical and Applied Pyrolysis, 2018) [Artigo]
Synthesis, characterization, thermal stability and pyrolysis of some alkaline earth picolinates M(C6H5NO2)2⋅nH2O (where M = Mg(II), Ca(II), Sr(II) and Ba(II) and n = di (Mg), mono (Ca), hemi three (Sr) hydrated) were ... -
Solvent-induced Stokes' shift in DCJTB: Experimental and theoretical results
; Ximenes, Valdecir Farias; Souza, Aguinaldo Robinson de ; (Journal Of Molecular Structure, 2019) [Artigo]
The solvent-induced Stokes' shift, which describes the response at different solvents (acetonitrile, chloroform, dichloromethane, 1,4-dioxane, N,N-dimethylformamide, ethanol, heptanol, tetrahydrofuran, and toluene) to a ... -
ELUCIDATION OF THE INDUCED CHIRALITY OF DANSYLGLYCINE BY ITS INTERACTION WITH HUMAN SERUM ALBUMIN
Souza, Aguinaldo Robinson de; Ferreira Boza, Izahelle Amorim ; Ximenes, Yaldecir Farias ; Yoguin, Mauricio Ikeda ; ; ; (Quimica Nova, 2019) [Artigo]
Human serum albumin (HSA) plays an important role in the transport of a wide variety of substances, including compounds with pharmacological properties. The dansylglycine (DanG) is a fluorescent amino acid derivative ... -
Synthesis and structure of a praseodymium (III) complex with carboxylate ligand: A thermal and spectroscopic study
; Teixeira, Jose Augusto; ; Caires, Flavio Junior ; Treu-Filho, Oswaldo ; ; ; ; (Journal Of Rare Earths, 2018) [Artigo]
One Pr(III) lanthanide ion complex was initially synthesized and characterized by TGA-DSC in air atmosphere, as well as characterized by CHN elemental analysis, defining the stoichiometric ratio as Pr(DMBz)(3). The gaseous ... -
Investigation and characterization by TG/DTG–DTA and DSC of the fusion of Riboflavin, and its interaction with the antibiotic norfloxacin in the screening of cocrystal
Ferreira, Laura Teófilo; Alarcon, Rafael Turra ; Perpétuo, Glauco Lini ; Bannach, Gilbert (Journal of Thermal Analysis and Calorimetry, 2018) [Artigo]
This work synthesized and characterized the NOR-RIB 1:1 (mol–mol) cocrystal. During a study of the reagents, Riboflavin (RIB) melted at 304 °C, which is different from the temperature previously reported in the literature ... -
Use of DSC in degree of conversion of dimethacrylate polymers: easier and faster than MIR technique
Alarcon, Rafael Turra; Gaglieri, Caroline ; de Oliveira, Arthur Rossi ; Bannach, Gilbert (Journal of Thermal Analysis and Calorimetry, 2018) [Artigo]
This work aims to determine the degree of conversion of polymers obtained using diurethane dimethacrylate (UDMA) monomer by two different techniques: differential scanning calorimetry (DSC) and Fourier transform infrared ... -
New thermal study of polymerization and degradation kinetics of methylene diphenyl diisocyanate
da Silva, José Eduardo Estevam; Alarcon, Rafael Turra ; Gaglieri, Caroline ; Magdalena, Aroldo Geraldo ; da Silva-Filho, Luiz Carlos ; Bannach, Gilbert (Journal of Thermal Analysis and Calorimetry, 2018) [Artigo]
This work investigates the thermal polymerization process of a methylene diphenyl diisocyanate (MDI) monomer as well as its thermal degradation following the ICTAC recommendations. MDI monomer is widely used as a synthetic ...