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Listar por autor "Centeno, Silvia"
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Charge transfer in the nanoscale and SERS: understanding the huge efficiency of the electrode potencial in tuning the CT states
Centeno, Silvia; Ruano, Cristina; Roman-Perez, Jessica; López-Tocón, Isabel; Soto, Juan; [et al.] (2014-09-10)This work deals with the unexplained efficiency of the electrode potential in tuning the energy of the CT states of hybrid systems formed by molecules and metallic nano structures. Huge energy gain up to 5eV/V observed in ... -
Effect of the electrode potential on surface-enhanced Raman intensities of 2-methylpyrazine
López-Tocón, Isabel; Centeno, Silvia; Román-Pérez, Jessica; Otero, Juan Carlos (2014-05-30)The effect of the electrode potential on Surface Enhanced Raman Scattering (SERS) intensities of 2-methylpyrazine (2MP) recorded under resonant charge transfer (CT) conditions is analyzed by using a simple theoretical model ... -
Elaboración de pruebas de conocimiento en un entorno virtual como método de evaluación continua
López-Tocón, Isabel; Centeno, Silvia; Soto, Juan; Otero, Juan Carlos (2015-06-22)Se ha realizado una serie de pruebas de conocimiento o cuestionarios, dentro de la plataforma Moodle, como método de evaluación continua de la asignatura de Química Física General que se imparte en el primer curso del Grado ... -
SECARS imaging of thiophenol adsorbed on silver colloids
Centeno, Silvia; Schäfer, Gerhard; Görgülü, Rabia; Otero, Juan Carlos; Zumbusch, Andreas (2013-10-30)The very large enhancement of the Raman signal observed in SERS (Surface-enhanced Raman Spectroscopy)[1] enabling single molecule sensitivity in some cases, makes it very appealing to apply this same experimental approach ... -
Surface-enhanced photoinduced charge transfer processes in metal-molecule nanoclusters
Centeno, Silvia; Ruano, Cristina; Román-Pérez, Jéssica; López-Tocón, Isabel; Soto, Juan; [et al.] (2013-10-29)This work deals with the unexplained efficiency of the electrode potential (EV) in tuning the energy of Charge Transfer (ECT) electronic states of hybrid systems formed by molecules and metal nanostructures. Huge energy ... -
Using SERS to probe electric capacitive enhancement in nanometer-size hot spots
Centeno, Silvia; Ruano, Cristina; Roman-Perez, Jessica; López-Ramírez, Jessica; Soto, Juan; [et al.] (2014-09-10)Although the electromagnetic mechanism related to localized plasmons of the metal is the most important contribution in SERS, the chemical interaction between metal and molecule plays a crucial role. In SERS electrochemical ... -
Using Surface-enhanced Raman scattering to probe the capacitance of metallic nanostructures
Centeno, Silvia; Ruano, Cristina; Román-Pérez, Jéssica; López-Tocón, Isabel; Otero, Juan Carlos; [et al.] (2013)Though it is generally accepted that the electromagnetic mechanism related to the excitation of localized plasmons of the metal surface is the most important contribution in SERS, the chemical interaction between molecule ...