A5084186436- Synthesis and biological activity
- Carbohydrate Chemistry and Synthesis
- Synthesis and Characterization of Heterocyclic Compounds
- Synthesis and Biological Evaluation
- Synthesis of Tetrazole Derivatives
- Advanced Sensor and Energy Harvesting Materials
- Conducting polymers and applications
- Chemical Synthesis and Analysis
- Electrospun Nanofibers in Biomedical Applications
- Synthesis of Organic Compounds
- Click Chemistry and Applications
- Synthesis and properties of polymers
- Polymer Nanocomposites and Properties
- biodegradable polymer synthesis and properties
- Fluorine in Organic Chemistry
- Multicomponent Synthesis of Heterocycles
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Surface Modification and Superhydrophobicity
- Advanced Cellulose Research Studies
- Epoxy Resin Curing Processes
- Synthesis and Reactions of Organic Compounds
- Synthesis of heterocyclic compounds
- Advanced Drug Delivery Systems
- Viral Infections and Outbreaks Research
University of Buenos Aires
2015-2024
Fundación Ciencias Exactas y Naturales
2014-2024
Consejo Nacional de Investigaciones Científicas y Técnicas
2015-2024
Institute of Astronomy and Space Physics
2014-2024
Centro Científico Tecnológico - San Juan
2009-2012
Universidade Federal de Minas Gerais
2001
Centro Universitário de Belo Horizonte
2000
Université Paris Cité
1983
Water drops become charged after sliding on a polymer surface. The variation of the detected charge with pH and ionic strength are compatible OH<sup>−</sup> or H<sup>+</sup> transfer from drop to polymer. These changes accounted for by thermodynamic model.
We report an investigation of the mechanisms involved in formation nanostructured epoxy thermosetting systems using highly epoxidized poly(styrene-b-isoprene-b-styrene) (eSIS) block copolymer at three different stages curing process. In uncured state, polystyrene (PS) blocks self-assembled sphere-like nanodomains with a short-range order, while polyisoprene (ePI) subchains were initially miscible precursors. As reaction proceeded, PS became gradually distorted switching to bigger and less...
Two methods, the first physical and other chemical, were investigated to modify surface roughness of polydimethylsiloxane (PDMS) films. The method consisted dispersing multi-walled carbon nanotubes (MWCNTs) magnetic cobalt ferrites (CoFe₂O₄) prior thermal cross-linking, curing composite system in presence a uniform field H. chemical was based on exposing films bromine vapours then UV-irradiating. characterizing techniques included scanning electron microscopy (SEM), energy-dispersive...
Dengue virus (DENV), a member of the family Flaviviridae, is at present most widespread causative agent human viral disease transmitted by mosquitoes. Despite increasing incidence this pathogen, there are no antiviral drugs or vaccines currently available for treatment prevention. In previous screening assay, we identified group N-allyl acridones as effective inhibitors. Here, activity and mode action targeted to RNA replication one active DENV-2 inhibitors was further characterized.The...
Controlling nanodomain morphology of nanostructured epoxy thermosets is critical to modulate the mechanical properties cross-linked matrix. In this contribution, we demonstrate that can be achieved by using a suitable block copolymer containing an soluble with ability react toward system during curing. For purpose designed epoxidized poly(styrene-b-isoprene-b-styrene) incorporating amine-reactive functionalities (eSIS-AEP) in as modifier for system, which allowed formation controlled...
Here, a mathematical model is presented, which accounts for the dependence of surface electrical charge density (σ) on pH and concentration added salts (Cs), generated when water drop rolls or slides hydrophobic polymer, process known as liquid-polymer contact electrification (LPCE). The same was successfully applied to fit isotherms ξ-potential function pH, reported in literature by other authors water-poly(tetrafluoroethylene) (PTFE) interfaces. Hence, σ ξ described using concept:...
The inhibitory effect of several thiosemicarbazones (TSCs), synthesized from aromatic ketones and terpenones, their heterocyclic thiadiazoline (TDZ) derivatives, was investigated against Junin virus (JUNV), an arenavirus agent Argentine haemorrhagic fever. From the 25 compounds tested, six belonging to TSC group were found be selective inhibitors JUNV, with EC 50 values determined by a yield inhibition assay in range 3.4–12.5 μM, selectivity indices greater than 10. By contrast, most TDZs...
Abstract To be used as templates for nanostructured thermosets, a commercial poly(styrene‐ b ‐isoprene‐ ‐styrene) (SIS) block copolymer (BCP) was epoxidized by three different epoxidation procedures. An exhaustive analysis of methodologies using metal catalyzed/hydrogen peroxide, dimethyldioxirane (DMDO), and meta ‐chloroperbenzoic acid ( m ‐CPBA) performed to obtain reactive BCPs. The DMDO approach the best strategy highly SIS BCP (85 mol %) without formation side products. Careful control...