A5019224433- Vanadium and Halogenation Chemistry
- Lanthanide and Transition Metal Complexes
- Inorganic and Organometallic Chemistry
- Thermal and Kinetic Analysis
- Agricultural and Food Sciences
- Magnetism in coordination complexes
- Chemical Thermodynamics and Molecular Structure
- Water Quality Monitoring and Analysis
- Metal complexes synthesis and properties
- Advanced Cellulose Research Studies
- Biotechnology and Related Fields
- Metal-Catalyzed Oxygenation Mechanisms
- Radioactive element chemistry and processing
- Advanced Chemical Sensor Technologies
- Click Chemistry and Applications
- Heme Oxygenase-1 and Carbon Monoxide
- Catalysis for Biomass Conversion
- Laser-Ablation Synthesis of Nanoparticles
- Synthesis of Tetrazole Derivatives
- Morinda citrifolia extract uses
- Indoor Air Quality and Microbial Exposure
- Phytochemical compounds biological activities
- Polyamine Metabolism and Applications
- Polymer Synthesis and Characterization
- Computational Drug Discovery Methods
Universidade Federal Rural de Pernambuco
2010-2024
Altera (United States)
2020
Brazilian Synchrotron Light Laboratory
2020
Teradata (United Kingdom)
2020
Secretaria do Meio Ambiente
2020
Universidade Federal de Pernambuco
2004-2019
The vanadium(V) complexes have been investigated as potential anticancer agents which makes it essential to evaluate their toxicity for safe use in the clinic. large-scale synthesis and acute oral mice of oxidovanadium(V) Schiff base catecholate complex, abbreviated [VO(HSHED)dtb] containing a redox-active ligand with tridentate (HSHED = N-(salicylideneaminato)-N’-(2-hydroxyethyl)-1,2-ethylenediamine) dtb 3,5-di-(t-butyl)catechol ligands were carried out. body weight, food consumption, water...
Vanadium compounds are known to exert insulin-enhancing activity, normalize elevated blood glucose levels in diabetic subjects, and show significant activity models of insulin resistance (IR). Faced with resistance, the present work investigates antidiabetic performance a oxidovanadium(IV)-based coordination compound—[VIVO(octd)]—and effects associated glucocorticoid-induced mice. The [VIVO(octd)] were evaluated female Swiss mice model induced by seven days dexamethasone treatment comparison...
This work presents the synthesis and spectroscopic study of new homotrinuclear (TRI) systems for photonics applications. The luminescence spectroscopy shows characteristics transitions Eu(III) Tb(III) ions. For Gd(III) complexes, triplets states were determined by phosphorescence measurement. complexes' coordination geometries calculated using Sparkle/AM1 model. europium systems, used to calculate all details involved in energy transfer process, theoretical quantum yields determined. From an...
Novel functionalized silica, containing 3,6-dithia-1,8-octanediol (Si-DIO), was synthesized and characterized by infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), scanning electron microscope (SEM) nuclear magnetic resonance (NMR) of 13C 29Si. The Si-DIO used to pre-concentrate determine the amount Pb(II) in milk samples employing a multicommuted flow system coupled flame atomic absorption spectrometry (FAAS). For adsorption process, pre-concentration minicolumn with 100 mg...
The synthesis and characterization of 21 complexes Cr(III), Mn(II), Fe(III), Co(II), Ni(II), Cu(II), Zn(II) with 2,6-pyridinedicarboxilic acid, (dipicolinic acid [DPA]), 4-hidroxypiridine-2,6-dicarboxilic (chelidamic [DAMIC]), chelidonic (DONIC) is reported. were characterized by CHN elemental analysis, infrared ultraviolet spectroscopies. obtained electronic spectra employed to calculate the 10 Dq values. observed sequence in values is: Fe (III) > Cr Ni (II) Co for DPA DONIC complexes. For...
Polyoxovanadates (POV) are a subgroup of polyoxometalates (POM), which nanosized clusters with reported biological activities. This manuscript describes the first toxicity evaluation mixed-valence polyoxovanadate, pentadecavanadate, (Me4N)6[V15O36Cl], abbreviated as V15. Cytotoxicity experiments using peripheral blood mononuclear cells (PBMC), larvae Artemia salina Leach, and in vivo oral acute repeated 28-day doses mice was carried out. The LC50 values PBMC A. were 17.5 ± 5.8 μmol L-1, 17.9...
New nanoparticles containing biomaterials are emerging as versatile active platforms in a great number of applications, for example, skin substitutes and therapeutic media. The present study describes the preparation silver (AgNPs) embedded agarose films impact calcium ascorbate formation ANPs well final properties films. Colloidal AgNPs were synthetized by two chemical reduction routes: (i) applying NaBH4 (ii) only NaBH4. using showed sizes ranging from 5 to 18 nm while was used micrometer...
The platinum-based coordination compounds consist of an important class antineoplastic chemotherapeutics with a view to their worldwide commercialization.Even cisplatin being officially approved in 1978 by the FDA, Cairns (in 1975) and Nowell (1976) had already postulated emergence drug-resistant tumor cells via somatic evolution; i.e., need for reflection on Darwinian dynamics was known.The evolutionary adaptations cancer must be known order avoid arise multidrug resistance phenomenon...
Abstract The coordination compounds EuCl3·1.5hmta·H2O, TmCl3·hmta·H2O, Cr(CH3COO)2·2hmta, FeCl3· hmta·3H2O, Co(NO3)2·3hmta, CuSO4·3hmta, PbCl2·0.5hmta·5H2O, HgCl2·hmta and NiCl2·hmta·H2O (hmta = hexamethylenetetraamine) were synthesized characterized by elemental analysis, infrared spectroscopy thermogravimetry. data are in agreement with through nitrogen. For the hydrated compounds, a first mass-loss step, associated release of water molecules, followed an hmta molecule was observed....
RESUMO Foram avaliados os efeitos tóxicos do metavanadato de sódio (MV), pentóxido vanádio (PV) e sulfato oxovanádio (SV), potenciais fármacos antidiabéticos, em embriões adultos zebrafish (Danio rerio). Os foram expostos a concentrações 10-1000µg/mL para avaliação da CL50 96h seus teratogênicos. 10 20µg/mL dos mesmos compostos se avaliarem alterações comportamentais relacionadas à exposição química mortalidade. A foi 22,48, 53,62 74,14µg/mL MV, SV PV, respectivamente. Houve 100% mortalidade...
In the last few years, interest in development of vanadium-based compounds has been increased due to therapeutic potential Diabetes Mellitus (DM).This review summarizes essential topics about vanadium chemistry, classification, examples, activity timeline animal models, mechanistic proposals, bioavailability, and pharmacokinetics.Furthermore, principal approaches for designing new coordination with antidiabetic discussed.
DEVELOPMENT OF AMINOFUNCTIONALIZED SILICA MATRIX AS A POTENTIAL ADSORBENT FOR Pt4+ IONS IN PRECONCENTRATION SYSTEMS FAAS ANALYSIS. The use of materials such as organofunctionalized silica for application in solid phase extraction (SPE) allows the preconcentration several ions, including Pt, and subsequent detection. This work aims to synthesize characterize an (Sil-TMSDT) with silylant N’(trimethoxysilyl)propylethylenetriamine its a ions aqueous media, using detection by flame atomization...
Abstract This work presents the production of a gel containing bacterial cellulose and curcumin anti‐inflammatory healing activity assayed according to an animal model (BC‐curcumin). The methodology consisted (BC) using glycerol‐based culture medium, subsequentially purified transformed into powder added ethanolic solution, acting as carrier matrix bioactive compound, well this component present in proposal, promotes prolonged liberation curcumin. BC BC‐curcumin were characterized by...