A5067671235- Flame retardant materials and properties
- Metal complexes synthesis and properties
- Organometallic Complex Synthesis and Catalysis
- Thermal and Kinetic Analysis
- Catalytic Processes in Materials Science
- Advanced Photocatalysis Techniques
- Transition Metal Oxide Nanomaterials
- Synthesis and characterization of novel inorganic/organometallic compounds
- Metalloenzymes and iron-sulfur proteins
- TiO2 Photocatalysis and Solar Cells
- Nanomaterials for catalytic reactions
- Lanthanide and Transition Metal Complexes
- Catalysis and Oxidation Reactions
- Polyoxometalates: Synthesis and Applications
- Ferrocene Chemistry and Applications
- Luminescence Properties of Advanced Materials
- Radioactive element chemistry and processing
- Pigment Synthesis and Properties
- Chemical Reaction Mechanisms
- Advancements in Battery Materials
- Dendrimers and Hyperbranched Polymers
- Metal-Catalyzed Oxygenation Mechanisms
- Fluorine in Organic Chemistry
- Chemical and Physical Properties of Materials
- Advanced Battery Materials and Technologies
University of Chile
2015-2024
Universidad de Santiago de Chile
2010-2017
Rede de Química e Tecnologia
2017
Baker Hughes (United States)
2017
University of Limerick
2008
Hospital Universitario La Paz
2005-2006
University of Puerto Rico System
1986
Background and Objective Based on lipopolysaccharide (LPS) antigenicity, different Aggregatibacter actinomycetemcomitans serotypes have been described. Serotype b strains demonstrated a stronger capacity to trigger cytokine production dendritic cells (DCs). As DCs regulate the development of T‐lymphocyte lineages, objective this investigation was study response T lymphocytes after being stimulated with autologous primed bacterial belonging most prevalent A. in humans: a–c. Material Methods...
Efficient photocatalytic degradation of persistent cationic dye pollutants under visible light is possible with Fe<sub>2</sub>O<sub>3</sub> nanoparticles formed by solvent-less synthesis using macromolecular precursor design.
Reaction of chitosan with metallic salts gives nanostructured Mn<sub>2</sub>O<sub>3</sub>, Co<sub>3</sub>O<sub>4</sub> and NiO. Graphitic carbon is formed over the oxides.
A solid-state phase control of TiO2 by the use different macromolecular complex precursors is reported for first time. During formation nanoparticles, chitosan and poly(styrene-co-4-vinylpyridine) polymers can act as template producing areas after carbonization, where nucleates. It seems that location metal centers through polymeric chain (i.e., distance between centers) strongly influences morphology particle size photocatalyst. To demonstrate application value our structures,...
The synthesis and characterization of new organosilicon derivatives N(3)P(3)Cl(6), N(3)P(3)[NH(CH(2))(3)Si(OEt)(3)](6) (1), N(3)P(3)[NH(CH(2))(3)Si(OEt)(3)](3)[NCH(3)(CH(2))(3)CN](3) (2), N(3)P(3)[NH(CH(2))(3)Si(OEt)(3)](3)[HOC(6)H(4)(CH(2))CN](3) (3) are reported. Pyrolysis 1, 2, 3 in air at several temperatures results nanostructured materials whose composition morphology depend on the temperature pyrolysis substituents phosphazenes ring. products stem from reaction SiO(2) with P(2)O(5),...
A systematic study of the synthesis V 2 O 5 nanostructured materials using macromolecular PS‐ co ‐4‐PVP·(VCl 3 ) y and chitosan·(VCl complexes is presented. It demonstrated that various coordination degrees metal into polymeric chain specifically influence product formation after pyrolysis. were prepared by simple reaction VCl with respective polymer in molar ratios 1 : 1, 5, 10 metal/polymer characterized elemental analysis, IR spectroscopy, TGA/DSC analysis. Solid‐state thermolysis these...
The pyridine-containing copolymers {[NP(O2C12H8)]X[NP(OC5H4N)2]1-X}n, with X = 0.7 (3a) and 0.8 (3b), their respective organometallic derivatives of approximate formula {[NP(O2C12H8)]X[NP(OC5H4N·MLn)2]1-X}n MLn CpFe(dppe), CpRu(PPh2)2, (n5-CH3C5H4)Mn(CO)2, W(CO)5 have been prepared characterized. As models, the simple compounds N3P3(OC6H5)5OC5H4N·W(CO)5 (2) HOC5H4N·W(CO)5 (1) also Pyrolysis polymers in air affords metallic nanostructured materials, which according to transmission electron...
A cyclotriphosphazene bearing two 4-oxypyridine groups on the same phosphorus atom, gem-[N(3)P(3)(O(2)C(12)H(8))(2)(OC(5)H(4)N-4)(2)] (I), and its analogous polymer [{NP(O(2)C(12)H(8))}(0.7){NP(OC(5)H(4)N-4)(2)}(0.3)](n) (II), have been used to prepare gold or silver, cyclic polymeric, metallophosphazenes. The following complexes, gem-[N(3)P(3)(O(2)C(12)H(8))(2)(OC(5)H(4)N-4{ML})(2)] (ML=Au(C(6)F(5)) (1) Au(C(6)F(5))(3) (2)), [N(3)P(3)(O(2)C(12)H(8))(2)(OC(5)H(4)N-4{AuPPh(3)})(2)][NO(3)](2)...
We present a method for the preparation and deposition of metallic microstructures nanostructures deposited on silicon silica surfaces by pyrolysis in air at 800 °C corresponding metallophosphazene (cyclic or polymer). Atomic force microscopy studies reveal that morphology is dependent polymeric oligomeric nature phosphazene precursor, used, substrate surface (crystalline amorphous) its prior inductively couple plasma etching treatment. Microscale nanoscale structures high-surface-area thin...
We report a successful ligand- and liquid-free solid state route to form metal pyrophosphates within layered graphitic carbon matrix through single step approach involving pyrolysis of previously synthesized organometallic derivatives cyclotriphosphazene. In this case, we show how crystal Mn(2)P(2)O(7) can be formed on either the micro- or nanoscale in complete absence solvents solutions by an efficient combustion process using rationally designed macromolecular trimer precursors, present...
Gold and silver complexes containing the monophosphane 1-PPh2-2-Me-l,2-C2B10H10 with different coordination numbers (2, 3) have been synthesized: [M(7,8-(PPh2)2-C2B9H10)(1-PPh2-2-Me-C2B10H10)] (M = Ag, Au) [Au2(μ-1,n-C2B10H10)(1-PPh2-2-Me-C2B10H10)2] (n 2, 12). Solid-state pyrolysis of [AuCl(1-PPh2-2-Me-C2B10H10)] [Au2(μ-1,12-C2B10H10)(1-PPh2-2-Me-C2B10H10)2] in air solutions deposited on silicon silica at 800 °C results single-crystal Au, confirmed by diffraction SEM-EDS. The morphology...
Pyrolysis at 800°C under air of the macromolecular precursor Chitosan•(PdCl 2 ) n and PS-co-4-PVP•(PdCl in solid state afford mixture phases Pt/PdO depending on molar ratio metal /polymer.For 1:1 precursors pure phase PdO was obtained while that for another ratios 1:5 1:10, were obtained.For 1:10 core/shell PdO@Pd nanoparticles as small 4 nm observed.Optical properties indicate an insulator behavior.
The purpose of this study was to assess the relationship between morbidity and ambulatory care utilization in a randomly selected sample children with stable patterns use services prepaid multispecialty group practice. unique features approach were focus on long-term relationships (over 8 years) assessment health status by combination parent reports, child teacher physical examination. Domains that assessed included types frequencies conditions disability associated them, functional...