A5090907286- Electrochemical sensors and biosensors
- Electrochemical Analysis and Applications
- Analytical Chemistry and Sensors
- Advanced biosensing and bioanalysis techniques
- Conducting polymers and applications
- Molecular Junctions and Nanostructures
- Polymer Surface Interaction Studies
- Electrocatalysts for Energy Conversion
- Gold and Silver Nanoparticles Synthesis and Applications
- Nanoparticle-Based Drug Delivery
- Dendrimers and Hyperbranched Polymers
- Medicinal Plants and Neuroprotection
- Glycosylation and Glycoproteins Research
- DNA and Nucleic Acid Chemistry
- Click Chemistry and Applications
- RNA and protein synthesis mechanisms
- Protein Hydrolysis and Bioactive Peptides
- Advanced Nanomaterials in Catalysis
- Protein Interaction Studies and Fluorescence Analysis
- Quantum Dots Synthesis And Properties
- Lipid Membrane Structure and Behavior
- RNA Interference and Gene Delivery
- Dye analysis and toxicity
- Surfactants and Colloidal Systems
- Biosensors and Analytical Detection
Universidad Nacional de Córdoba
2012-2024
Consejo Nacional de Investigaciones Científicas y Técnicas
2020-2024
Université Joseph Fourier
2003-2006
Institut de Chimie Moléculaire de Grenoble
2003-2006
Centre National de la Recherche Scientifique
2003-2006
Cordoba University
2005
Département de Chimie Moléculaire
2003
University of Buenos Aires
2003
Université Grenoble Alpes
2003
Abstract In this work we summarize the recent activities of our group regarding analytical performance a new composite material, so‐called carbon nanotubes paste electrode (CNTPE) obtained by dispersion multiwall in mineral oil. The electrocatalytic properties towards different redox systems, especially those involved important enzymatic reactions are discussed. Significant shifting overpotentials for oxidation and/or reduction hydrogen peroxide, NADH, phenol, catechol, dopamine, ascorbic...
Abstract We report on the analytical performance of glassy carbon (GCE) electrodes modified with a dispersion multiwall nanotubes (CNT) in chitosan (CHIT) for quantification DNA. The electroanalytical response resulting was evaluated using differential pulse voltammetry, while electrochemical reactivity film surface characterized scanning microscopy. Different treatments GCE were to improve stability and accumulation guanine oxidation signal double stranded calf‐thymus DNA after 3‐min 20...
Construction and characterization of structural charge transport properties electrostatically LbL self-assembled multilayers gold nanoparticles a viologen-based redox-active polyelectrolyte is reported.
We report on a novel bioelectrode based self-assembled multilayers of nitrate reductase (NR) intercalated with cationic viologen-functionalized polyvinylpyridinium (PV) polymer specially synthesized for this purpose. Different samples proved to have varying substitution ratios, according NMR experiments. The electrostatic self-assemblies were built up thiol-modified gold surface using strategy previously described by Hodak et al. electrochemical behavior PV and the response electrodes toward...
Abstract This review summarizes the most relevant work performed in last years field of DNA-based electrochemical biosensors for sequence-specific DNA detection. The approaches used preparing biosensing layer, as well schemes developed transduction hybridization event are also discussed.
Abstract Voltammetric behavior of oligodeoxynucleotide (ODN) 5′‐T 40 (GAA) 7 –3′ end‐labeled with osmium tetroxide,2,2‐bipyridine [Os(VIII)bipy] was compared Os(VIII)bipy‐base‐ and Os(VI)bipy‐sugar‐modified thymine ribosides. Cyclic voltammograms Os(VIII)bipy‐modified ODN at mercury carbon electrodes were similar but not identical to those riboside. Treatment the Os(VI)bipy did result in modification, agreement known specificity reagent sugar cis‐diols. We show that addition electrodes, gold...
Abstract This work reports the advantages of using glassy carbon electrodes modified with multiwall nanotubes (MWCNT) dispersed in polyethylenimine (PEI). The presence MWCNTs wrapped by PEI largely facilitated strong adsorption uric acid (UA) and allowed its highly sensitive selective quantification even high excess ascorbic acid. selected conditions for electrochemical sensing were 5 s accumulation at −0.300 V under stirring a 0.050 M phosphate buffer solution pH 7.40 differential pulse...
Abstract The electrochemical response of a glassy carbon electrode modified with nanotubes (CNT) dispersed in two solvents, water and DMF, polymers, chitosan Nafion is reported. films were homogeneous when the dispersing agent was or DMF. In case surfaces present areas different density CNTs. A more sensitive obtained CNTs are solvents. CNT nature polymer demonstrated to be critical parameter not only for but also activity resulting electrodes.