Silva Rojas Juan Francisco

Email: 
juan.silva.r@usach.cl
Teléfono: 
27 181 136

Abstract

We explore strategies for construction of molecular devices and their structural and functional properties. In one of our investigations we propose an innovative strategy for the fabrication of a biosensor for electrochemical detection.  The nanoelectrode arrangements based on thin films nanostructures and functionalized with redox activate center as metal phthalocyanines shown high selectivity for the oxidation of compounds as, dopamine, serotonin and epinephrines.

 

Línea(s) de investigación: 
Electrocatálisis en Nanoestructuras
Jerarquía: 
Asociado
Grados académicos /educación: 
Doctor en Química, Universidad de Santiagode Chile, 2008.
Químico, Universidad de Santiago de Chile 2003.
Publicaciones: 
  1. Electrocatalytic actvity of modified gold electrodes based on self-assembled monolayers of 4-mercaptopyridine and 4-aminothiophenol on Au(111) surfaces chemically functionalized with substituted and unsubstituted Fe(II)-phthalocyanines, J. Francisco Silva*, Jorge Pavez, Carlos Silva, José H. Zagal,  Electrochimica Acta Submitted June 2013. Impacto=3,642
  2. Optimizing the Reactivity of Surface Confined Cobalt N4-Macrocyclics for the Electrocatalytic Oxidation of L-Cysteine by Tuning the Co(II)/(I) Formal Potential of the Catalyst to the Thermodynamic Potential of the Reaction, Miguel A. Gulppi*, Francisco J. Recio, Federico Tasca, Gonzalo Ochoa, Juan F. Silva, Jorge Pavez, José H. Zagal*, Electrochimica Acta Submitted May 2013. Impacto=3,642
  3. Enhancement of the Catalytic Activity for O2 Reduction of Fe phthalocyanine Anchored to Au(111) via Conjugated Self-assembled Monolayers of Aromatic Thiols and Comparison with Cu phthalocyanine. Ingrid Ponce, J. Francisco Silva, Ruben Oñate, Marcos Caroli Rezende, Maritza A.Paez, Jorge Pavez*, José H. Zagal The Journal of Physical Chemistry C Índice de Impacto=4,524.
  4. Inverted Linear Correlation Between the Catalytic Activity of Iron Phthalocyanines and the Formal Potential of the Catalyst in the Electrooxidation of L-cysteine Cristian Gutierrez, J. Francisco Silva, Jorge Pavez, Fethi Bedioui, José H. Zagal*, Electrocatalysis , 3 (2012) 153.
  5. Theoretical and Experimental Study of Bonding and Optical Properties of Self-Assembly Metallophthalocyanines Complexes on a Gold Surface. A Survey of the Substrate Surface Interaction. Ingrid Ponce, J. Francisco Silva, Ruben Oñate, Sebastian Miranda-Rojas, Alvaro Muñoz-Castro, Ramiro Arratia-Perez*,  Fernando Mendizabal*, and Jose H. Zagal*. J. Phys. Chem. C 115 (2011) 23512.  Índice de Impacto=4,524.
  6. Enhanced catalytic activity of Fe phthalocyanines linked to Au(111) via conjugated self-assembled monolayers of aromatic thiols for O2 reduction . Ingrid Ponce, J Francisco Silva, Ruben Oñate, Marcos Caroli Rezende, Maritza Paez, Jorge Pavez, Jose H. Zagal*, Electrochemistry Communications 13 (2011) 1182.  Indice de Impacto=4,282
  7. Reactivity trends of surface-confined Co-tetraphenyl porphyrins and vitamin B12 for the oxidation of 2-aminoethanethiol.  Comparison with Co-phthalocyanines. (2010) Gonzalo Ochoa, Cristián Gutierrez, Ingrid Ponce, J Francisco Silva, Maritza Páez , Jorge Pavez,  José H. Zagal*, J. Electroanal. Chem., 639-pag 88.  Índice de Impacto=2,732
  8. “Gold surfaces modified with 4-Aminothiophenol Self Assembled Monolayers functionalized with a Pd (II) complex colloid: a template for the Electropolymerization of Nanostructured Polyaniline Films” (2010)   Carlos P. Silva, J Fancisco Silva, Mamie Sancy, Juan Guerrero, Maritza Páez, José H. Zagal,  Jorge Pavez*,  Molecular Crystals and Liquid Crystals, Vol. 522- pag 112. Índice de Impacto=0,543
  9. “Metallophthalocyanine-based molecular materials as catalysts for electrochemical reactions” (2010) José H. Zagal*, Sophie Griveau, J Francisco Silva, Tebello Nyokong* and Fethi Bedioui*, Coord. Chem Revs. 254- pag 2755.
  10. Glassy carbon electrodes modified with single walled carbon nanotubes and cobalt phthalocyanine and nickel tetrasulfonated phthalocyanine: Highly stable new hybrids with enhanced electrocatalytic performances, J Francisco Silva, Sophie Griveau, Cyrille Richard, Jose H. Zagal, Fethi Bedioui*, Electrochemistry Communications 9 (2007) 1629.  Indice de Impacto=4,282
  11. Effects of alginic acid fromm arine algae on calciumcarbonate electrodeposited coating , (2005) Jorge Pavez*, J. Francisco Silva, Francisco Melo, Journal of Crystal Growth 282- pag 438. Índice de Impacto=1,850
  12. Homogeneous calcium carbonate coating obtained by electrodeposition: in situ atomic force microscope observations (2005) Jorge Pavez*, J Francisco Silva, Francisco Melo, Electrochimica Acta 50- pag 3488. Índice de Impacto=3,642
Investigaciones : 

Investigador responsable

FONDECYT 11100450 2010-2012 titulado “Construction of nanoelectrode ensemble based on surface array of alkanethiol monolayers end functionalized with copper phthalocyanines”.

Co-Investigador

FONDECYT 1131062 2013-2016 titulado Molecularly Assembled Electrodes 

Otras actividades relevantes: 

  • otras publicaciones y patentes

        Fundamental Aspects on the Catalytic Activity of Metallomacrocyclics for the Reduction of O2. José H. Zagal, Maritza Páez, J. Francisco Silva título del libro N4-Macrocyclic Metal Complexes, Springer, 2006.

  • Participación en claustro de doctorados

       Doctorado en química de la facultad de Química y Biología