Nanotecnología-Salvarezza

Nanotecnología

ESTUDIO DE SISTEMAS MOLECULARES Y MATERIALES NANO/MICROESTRUCTURADOS.

Los temas de investigación que se desarrollan en este laboratorio comprenden distintos aspectos relacionados con Nanociencia y Nanotecnología. Los principales proyectos son:

1) Fisicoquímica de sistemas moleculares autoensamblados sobre superficies metálicas como plataformas moleculares para la modificación de superficies y diseño de dispositivos (R.C. Salvarezza).

2) Desarrollo de biosensores ópticos y electroquímicos en base a sistemas biomimeticos en particular bicapas lipídicas ensambladas sobre superficies metálicas modificadas (M.E. Vela).

3) Desarrollo de nuevos métodos de nano y microfabricación en base a litografías suaves (molding, stencil lithography) y la aplicación de superficies nano/microestructuradas en adhesión bacteriana y celular (P.L. Schilardi).

4) Caracterización de nanomateriales y monocapas orgánicas mediante técnicas de ultra alto vacío (G. Benítez).

5) Autoensamblado molecular sobre semiconductores en particular monocapas orgánicas sobre GaAs, InP, superficies metálicas modificadas mediante fullerenos (B. Blum).

6) Nanomateriales con aplicaciones biomédicas: nanoparticulas metalicas recubiertas de fármacos, nanoparticulas para control de actividad bacteriana. (C. Vericat).

7) Desarrollo de métodos de fabricación de nanomateriales de interés en electrocatalisis y electroanálisis: nanoparticulas metálicas y bimetálicas (M. Fonticelli).

8) Síntesis de nanopartículas protegidas con grupos orgánicos y nanoestructuras para el desarrollo de sensores de gases y vapores volátiles orgánicos (VOCs), y otras aplicaciones analíticas (F. Ibáñez).

9) Síntesis orgánica de moléculas de interés en nanodispositivos.

10) Modelado de la evolución de nanoestructuras en procesos de autodifusión (M.F. Castez).

Integrantes del grupo

Coordinador

Dr. Roberto C. Salvarezza

Responsables de proyectos

María E. Vela, Bárbara Blum
Patricia Schilardi, Mariano Fonticelli
Carolina Vericat, Federico Castez
Guillermo Benitez, Francisco Ibáñez
Doris Grumelli

Colaboradores

Gastón Corthey, Emiliano Cortés
Jorge Massarutti, Constanza Flores
Aldo Rubert, Matías Calderón
Marcos Madrid, Julio Azcárate
Evangelina Pensa, Eduardo A. Ramírez
M. Alejandra Floridia Addato, Andrea Lorena Piccone
German Kürten Moreno, M. Celeste Dalfovo
Julie Viviana Maya Girón, Alejandro Miñán

Link a la página del grupo

Principales publicaciones del grupo referidas al proyecto
(2007 - 2011)

* “Electronic and magnetic properties of C60 thin films under ambient conditions: A multitechnique study.”
O. Amelines-Sarria, P.C. Dos Santos Claro, P.L. Schilardi, B. Blum, A. Rubert, G. Benitez, V.A. Basiuk, A.González Orive, A. Hernández Creus, C. Díaz y R.C. Salvarezza
Organic Electronics: physics, materials, applications, 12 (9), 1483-1492 (2011).

* “"Naked" gold nanoparticles supported on HOPG: Melanin functionalization and catalytic activity.”
A.G. Orive, D. Grumelli, C. Vericat, J.M. Ramallo-López, L. Giovanetti, G. Benitez, J.C. Azcárate, G. Corthey, M.H. Fonticelli, F.G. Requejo, A. Hernandez Creus y R.C. Salvarezza
Nanoscale, 3 (4), 1708-1716 (2011).

* “Hydrogen reactivity of palladium nanoparticles coated with mixed monolayers of alkyl thiols and alkyl amines for sensing and catalysis applications.”
M. Moreno, F.J. Ibañez, J.B. Jasinski y F.P. Zamborini
Journal of the American Chemical Society, 133 (12), 4389-4397 (2011).

* “Electrochemical fabrication of metal/organic/metal junctions for molecular electronics and sensing applications.”
R. Dasari, F.J. Ibañez y F.P. Zamborini
Langmuir, 27 (11), 7285-7293 (2011).

* “Alkanethiol adsorption on platinum: Chain length effects on the quality of self-assembled monolayers.”
M.A. Floridia Addato, A.A. Rubert, G.A. Benítez, M.H. Fonticelli, J. Carrasco, P. Carro y R.C. Salvarezza
Journal of Physical Chemistry C, 115 (36), 17788-17798 (2011).

* “Have flagella a preferred orientation during early stages of biofilm formation?: AFM study using patterned substrates.”
C. Díaz, P.L. Schilardi, R.C. Salvarezza y M. Fernández Lorenzo de Mele
Colloids and Surfaces B: Biointerfaces, 82 (2), 536-542 (2011).

* “Adsorption and thermal stability of alkanethiol films on GaAs(110): A comparative study by TOF-DRS and TOF-SIMS.”
L.M. Rodríguez, L.J. Cristina, L.S. Alarcón, B. Blum, R.C. Salvarezza, L. Xi, W.M. Lau, E.A. Sanchez, J.E. Gayone y O. Grizzi
Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Vol (9), 924-931 (2011).

* “Electrochemistry of Os(2,2'-bpy)2ClPyCH₂NHCOPh tethered to Au electrodes by S-Au and C-Au junctions.”
A.M. Ricci, N. Tognalli, E.De La Llave, C. Vericat, L.P. Méndez De Leo, F.J. Williams, D. Scherlis, R.C. Salvarezza y E.J. Calvo
Physical Chemistry Chemical Physics, 13 (12), 5336-5345 (2011).

* “From single to multiple Ag-layer modification of Au nanocavity substrates: A tunable probe of the chemical surface-enhanced Raman scattering mechanism.”
N.G. Tognalli, E. Cortés, A.D. Hernández-Nieves, P. Carro, G. Usaj, C.A. Balseiro, M.E. Vela, R.C. Salvarezza y A. Fainstein
ACS Nano, 5 (7), 5433-5443 (2011).

* “Human apolipoprotein A-I-derived amyloid: Its association with atherosclerosis.”
N.A. Ramella, O.J. Rimoldi, E.D. Prieto, G.R. Schinella, S.A. Sanchez, M.S. Jaureguiberry, M.E. Vela, S.T. Ferreira y M.A. Tricerri
PLoS ONE, 6 (7), art. no. e22532 (2011).

* “Surface functionalization of electro-deposited nickel.”
J.E. Sadler, D.S. Szumski, A. Kierzkowska, S.R. Catarelli, K. Stella, R.J. Nichols, M.H. Fonticelli, y W. Schwarzacher
Physical Chemistry Chemical Physics, 13 (40), 17987-17993 (2011).

* “Comment on "the interaction of cells and bacteria with surfaces structured at the nanometre scale".”
C. Díaz, M. Fernández Lorenzo De Mele y P.L. Schilardi
Acta Biomaterialia, 7 (4), 1934-1935 (2011).

* “Ni-W coatings electrodeposited on carbon Steel: chemical composition, mechanicals properties and corrosion resitance.”
M.P. Quiroga Argañaraz, S.B. Ribotta, M.E. Folquer, L.M. Gassa, G. Benitez, M.E. Vela y R.C. Salvarezza
Electrochimica Acta, 56, 5898-5903 (2011).

* “Spontaneous adsorption of silver nanoparticles on Ti/TiO₂ surfaces. Antibacterial effect on Pseudomonas aeruginosa.”
C.Y. Flores, C. Diaz, A. Rubert, G.A. Benítez, M.S. Moreno, M. Fernández Lorenzo de Mele, R.C. Salvarezza y C. Vericat
Journal of Colloid and Interface Science, 350 (2), 402-408 (2010).

* “The complex thiol-palladium interface: A theoretical and experimental study.”
P. Carro, G. Corthey, A.A. Rubert, G.A. Benitez, M.H. Fonticelli y R.C. Salvarezza
Langmuir, 26 (18), 14655-14662 (2010).

* “A theoretical framework to obtain interface's shapes during the high-temperature annealing of high-aspect-ratio gratings.”
M.F. Castez, R.C. Salvarezza, J. Nakamura y K. Sudoh
Applied Physics Letters, 97 (12), 123104 (2010).

* “Electrochemical modulation for signal discrimination in surface enhanced raman scattering (SERS).”
E. Cortés, P.G. Etchegoin, E.C. Le Ru, A. Fainstein, M.E. Vela y R.C. Salvarezza
Analytical Chemistry, 82 (16), 6919-6925 (2010).

* “Surface, diffusion, driven decay of patterns: Beyond the small slopes approximation.”
M.F. Castez
Journal of Physics Condensed Matter, 22 (34), 345007 (2010).

* “Generalized Fourier analysis for nanopatterns with overhangs.”
M.F. Castez
Europhysics Letters, 89 (2), 28001 (2010).

* “A surface effect allows HNO/NO discrimination by a cobalt porphyrin bound to gold.”
S.A. Suárez, M.H. Fonticelli, A.A. Rubert, E. De La Llave, D. Scherlis, R.C. Salvarezza, M.A. Martí y F. Doctorovich
Inorganic Chemistry, 49 (15), 6955-6966 (2010).

* “Synthesis and characterization of gold@gold(I)-thiomalate core@shell nanoparticles.”
G. Corthey, L.J. Giovanetti, J.M. Ramallo-López, E. Zelaya, A.A. Rubert, G.A. Benitez, F.G. Requejo, M.H. Fonticelli y R.C. Salvarezza
ACS Nano, 4 (6), 3413-3421 (2010).

* “Monitoring the electrochemistry of single molecules by surface-enhanced Raman spectroscopy.”
R. Cortés, P.G. Etchegoin, E.C. Le Ru, A. Fainstein, M.E. Vela y R.C. Salvarezza
Journal of the American Chemical Society, 132 (51), 18034-18037 (2010).

* “Self-assembled monolayers of thiols and dithiols on gold: New challenges for a well-known system.”
C. Vericat, M.E. Vela, G. Benitez, P. Carro y R.C. Salvarezza
Chemical Society Reviews, 39 (5), 1805-1834 (2010).

* “Surface relaxation of high-aspect-ratio nanostructures: Theory and experiments.”
M.F. Castez, P.C. Dos Santos Claro, P.L. Schilardi, G. Andreasen y R.C. Salvarezza
Journal of Physical Chemistry C, 114 (10), 4603-4610 (2010).

* “Organización de Pseudomonas fluorescens on chemically different nano/microestructured surcaces.”
C. Díaz, R.C. Salvarezza, M.A. Fernandez Lorenzo de Mele y P.L. Schilardi
Applied Materials & Interfaces, 2 (9), 2530-2539 (2010).

* “Thiol with an unusual adsorption - Desorption behavior: 6-mercaptopurine on Au(111).”
E. Pensa, P. Carro, A.A. Rubert, G. Benitez, C. Vericat y R.C. Salvarezza
Langmuir, 26 (22), 17068-17074 (2010).

* “Methylene blue incorporation into alkanethiol SAMs on Au(111): Effect of hydrocarbon chain ordering.”
D. Grumelli, L.P. Méndez De Leo, C. Bonazzola, V. Zamlynny, E.J. Calvo y R.C. Salvarezza
Langmuir, 26 (11), 8226-8232 (2010).

* “On the thermodynamic stability of alpha,omega-alkanedithiols self-assembled monolayers on unreconstructed and reconstructed Au(111).”
P. Carro, A. Hernandez Creus, A. Muñoz y R.C. Salvarezza
Langmuir, 26 (12), 9589-9595 (2010).

* “Modeling thermal decay of high-aspect-ratio nanostructures.”
M.F. Castez y R.C. Salvarezza
Applied Physics Letters, 94, 53103 (2009).

* “Electrochemical and X-ray Photoelectron Spectroscopy Characterization of Alkanethiols Adsorbed on Palladium Surfaces.”
G. Corthey, A.A. Rubert, G.A. Benitez, M.H. Fonticelli y R.C. Salvarezza
Journal Physical Chemistry C, 113, 6735-6742 (2009).

* “Enhanced Stability of Thiolate SAMs on Nanostructured Gold Substrates.”
E. Cortés, A.A. Rubert, G. Benitez, P. Carro, M.E. Vela y R.C. Salvarezza
Langmuir, 25, 5661-5666 (2009).

* “Electrochemically induced self-assembly of alkanethiolate adlayers on carbon steel in aqueous solutions.”
C.R. Weber, L. Dick, G.A. Benitez, M.E. Vela y R.C. Salvarezza
Electrochimica Acta, 54, 4817-4821 (2009).

* “Phospholipid bilayers supported on thiolate-covered nanostructured gold: in-situ Raman spectroscopy and electrochemistry of redox species.”
M.A. Daza Millone, M.E. Vela, R.C. Salvarezza, T.B. Creczynski-Pasa, N.G. Tognalli y A. Fainstein
Chem.Phys.Chem, 10, 1927-1933 (2009).

* “Ag-modified Au nanocavity SERS substrates.”
E. Cortes, N.G. Tognalli, A. Fainstein, M.E. Vela y R.C. Salvarezza
Physical Chemistry Chemical Physics, 11, 7469-7475 (2009).

* “Characterization of high area nanostructured gold surfaces by slow positron depth profiling.”
C. Macchi, A. Somoza, S. Mariazzi, R.S. Brusa, C. Vericat, M.E. Vela y R.C. Salvarezza
Physical Status Solid C, 6 (11), 2585-2588 (2009).

* “Electrochemical Preparation and Delivery of Melanin-iron Covered Gold Nanoparticle.”
D. Grumelli, C. Vericat, G. Benitez, R.C. Salvarezza, J.M. Ramallo López, L. Giovanetti, F.G. Requejo, Y.S. Shon, A. González Orive, Y. Gimeno y A. Hernández Creus
ChemPhysChem, 10, 370-373 (2009).

* “Electrochemical preparation of metal-melanin functionalized graphite surfaces.”
A. González Orive, Y. Gimeno, A. Hernández Creus D. Grumelli, C. Vericat, G. Benitez y R.C. Salvarezza
Electrochimica Acta, 54, 1589-1596 (2009).

* “Self-assembled Dithiothreitol on Au Sufaces for Biological Applications: Phospholipid Bilayers Formation.”
T.B. Creczynski-Pasa, M.A. Daza Millone, M.L. Munford, V.R. de Lima, T.O. Vieira, G.A. Benitez, A.A. Pasa, R.C. Salvarezza y M.E. Vela
Physical Chemistry Chemical Physics, 11, 1077-1084 (2009).

* “Self-assembly of alkanedithiols on Au(111) from solution: effect of chain length and self-assembly conditions.”
M.A. Daza Millone, H. Hamoudi, L. Rodriguez, A. Rubert, G. Benitez, M.E. Vela, R.C. Salvarezza, J. Gayone; E. Sanchez, O. Grizzi, C. Dablemont y V. Esaulov
Langmuir, 25 (22), 12945-12953 (2009).

* “From Monomers to Geometry-Constrained Molecules: One Step Further Toward Cyanide Bridged Wires.”
P. Albores, L.D. Slep, L.S. Eberlin, Y.E. Corilo, M.N. Eberlin, G. Benitez, M.E.. Vela, R.C. Salvarezza y L.M. Baraldo
Inorganic Chemistry, 48, 11226-11235 (2009).

* “Oxygen Reduction on Iron-Melanin Granular Surfaces.”
A. González Orive, A. Hernández Creus, D. Grumelli, G.A. Benitez, L. Andrini, F.G. Requejo, C. Bonazzola y R.C. Salvarezza
Journal Physical Chemistry C, 113, 17097-17103 (2009).

* “Continuous and discrete modeling of the decay of two-dimensional nanostructures.”
M.F. Castez y E.V. Albano
Journal of Physics: Condensed matter, 21, 263001 (2009).

* “Spontaneous Nanoripple Formation on Metallic Templates.”
P.C. dos Santos Claro, M.F. Castez, P.L. Schilardi, N.B. Luque, E.P.M. Leiva y R.C. Salvarezza
ACS Nano, 2, 2531-2539 (2008).

* “Spontaneously Formed Sulfur Adlayers on Au(111): Adsorbed Sulfur or Gold Sulfide?.”
P.G. Lustemberg, C. Vericat, G.A. Benitez, M.E. Vela, N. Tognalli, A. Fainstein, M.L. Martiarena, y R.C. Salvarezza
Journal of Physical Chemistry C, 112 (30), 11394-11402 (2008).

* “On the thermodynamic stability of (√3x√3)R30° methanethiolate lattice on reconstructed Au(111) surface models.”
P. Carro, R.C. Salvarezza, D. Torres y F. Illas
Journal Physical Chemistry C, 112, 19121-19124 (2008).

* “Extrinsic origin of ferromagnetism in single crystalline LaAlO₃ substrates and oxide films.”
F. Golmar, A.M. Mudarra Navarro, C.E. Rodríguez Torres, F.H. Sánchez, F.D. Saccone, P.C. dos Santos Claro, G.A. Benítez, y P.L. Schilardi
Applied Physics Letters, 92, 262503 (2008).

* “In-situ Raman spectroscopy of redox species confined in self-assembled molecular films.”
N.G. Tognalli, A. Fainstein, C. Vericat, M.E. Vela y R.C. Salvarezza
Journal Physical Chemistry C, 112, 3741-3746 (2008).

* “The effect of Ag Adatoms on High-Coverage Alkanethiolate Adsorption on Au(111).”
M.H. Fonticelli, G. Benítez, P. Carro, O. Azzaroni, R. C. Salvarezza, S. González, D. Torres y F. Illas
Journal Physical Chemistry C, 112, 4557-4563 (2008).

* “Thiol-capped gold: From planar to irregular surfaces.”
C. Vericat, G.A. Benitez, D.E. Grumelli, M.E. Vela y R.C. Salvarezza
Journal of Physics: Condensed Matter, 20, 1-8 (2008).

* “Mechanical Properties of Alkanethiol Monolayers studied by Force Spectroscopy.”
G. Oncins, C. Vericat y F. Sanz
Journal of the Chemical Physics, 128, 044701 (2008).

* “Restricted surface mobility of Thiolate-Covered metal surfaces: A simple strategy to produce high-area functionalized surfaces.”
C. Vericat, G.A. Benitez, M.E. Vela , R.C. Salvarezza, N.G. Tognalli y A. Fainstein
Langmuir, 23, 1152-1159 (2007).

* “Electrocatalytic and Magnetic Properties of Ultrathin Nanostructured Iron-Melanin Films on Au(111).”
A. González Orive, P. Dip ,Y. Gimeno, P. Díaz, P. Carro, A. Hernández Creus, G. Benítez, P.L. Schilardi, L. Andrini, F. Requejo y R.C. Salvarezza
Chemistry - A European Journal, 13 (2), 473-482 (2007).

* “Gas Phase Formation of Dense Alkanethiol Layers on GaAs(110).”
L.M. Rodriguez, J.E. Gayone, E.A. Sanchez, O. Grizzi, B. Blum, R.C. Salvarezza, L. Xi y W.M. Lau
Journal American Chemical Society, 129, 7807-7813 (2007).

* “Thiol-Capped Gold Nanoparticles on Graphite: Spontaneous Adsorption and Electrochemically Induced Release.”
D. Grumelli, C. Vericat, G. Benitez, M.E. Vela, L.J. Giovanetti, J.M. Ramallo-Lopez y F.G. Requejo, A.F. Craievich, Y.S. Shon y R.C. Salvarezza
Journal Physical Chemistry C, 111, 7179-7184 (2007).

* “Preparation of Ultrathin Thiolate-Covered Bimetallic Systems: From Extended Planar to Nanoparticle Surfaces.”
M.H. Fonticelli, G. Corthey, G.A. Benitez, L.J. Giovanetti, F.G. Requejo, Y.S. Shon y R.C. Salvarezza
Journal Physical Chemistry C, 111, 9359 (2007).

* “Nano/microscale Order Affects Early Stages of Biofilm Formation on Metal Surfaces.”
C. Díaz, P.L. Schilardi, R.C. Salvarezza y M. Fernández Lorenzo de Mele
Langmuir, 23, 11206-11210 (2007).

* “Direct Recoil Spectroscopy of Alkanethiol Covered Surfaces.”
L.M. Rodríguez, J.E. Gayone, M.L. Martiarena, E.A. Sánchez, O. Grizzi, B. Blum, R.C. Salvarezza, L. Xi y W.M. Lau
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 258, 183-188 (2007).

* “Interface dynamics during Cu shadow-mask physical vapor deposition on nonmetallic substrates.”
P.C. dos Santos Claro, P.L. Schilardi, B. Blum, M.F. Castez y R.C. Salvarezza
Physical Review B, 76, 205436-1, 205436-5 (2007).

* “Influence of the nano-micro-structure of the surface on bacterial adhesion.”
C. Diaz, M.C. Cortizo, P.L. Schilardi, S. Gomez de Saravia y M. Fernández Lorenzo de Mele
Materials Research, 10, 5-10 (2007).