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Listar por autor "Ávila-Ferrer, Francisco José"
Mostrando ítems 21-26 de 26
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Remembering the old propensity rules of the electromagnetic enhancement mechanism of SERS: reorientation of pyridine on silver electrode induced by the applied potential
Valdivia Mantas, Samuel; García-González, Francisco; Aranda Ruiz, Daniel; Ávila-Ferrer, Francisco José; López-Tocón, Isabel
; Soto, Juan; Otero, Juan Carlos[et al.] (ACS, 2024)
Electrochemical SERS of pyridine adsorbed on a silver electrode has been analyzed by comparing the spectra to the calculated normal Raman and resonance Raman intensities of model systems of pyridine bonded to linear silver ... -
Selection rules of surface-enhanced Raman scattering: the role of the out-of-plane vibrations
Aranda Ruiz, Daniel; Valdivia Mantas, Samuel; Ávila-Ferrer, Francisco José; Soto-Martín, Juan
; López-Tocón, Isabel
; Otero-Fernández-de-Molina, Juan Carlos
[et al.] (2019-07-25)
The electromagnetic/plasmonic (SERS-PL) and the chemical (usually involving resonant photoinduced metal-adsorbate (M-A) charge transfer processes (SERS-CT:M-A+hn-->M+-A-)) mechanisms are recognized as the two main contributions ... -
SERS study of different species of p-aminothiophenol adsorbed on silver nanoparticles
López-Ramírez, María Rosa; Ávila-Ferrer, Francisco José
; Otero-Fernández-de-Molina, Juan Carlos
; Soto-Martín, Juan
(2018-06-01)
In the present work we have focused the discussion on the experimental and theoretical SERS spectra of the organic compound pATP recorded on silver colloids. The huge SERS of pATP on metal substrates is significantly ... -
The influence of electrode potential on SERS through the electronic structure of nanostructured metal-cyanide interfaces
Otero-Fernández-de-Molina, Juan Carlos; García-González, Francisco; Aranda Ruiz, Daniel; Ávila-Ferrer, Francisco José
(2022-03-15)
Experimental and theoretical calculations confirm the existence of two different electronic structures of a surface complex formed by a particular molecule bonded to charged metal electrodes, clusters, or nanoparticles. ... -
Vibronic Spectra for reduced-dimensionality models: Application to the Circular dichroism of chiral polythiophenes
Aranda Ruiz, Daniel; Cerezo Bastida, Javier; Ávila-Ferrer, Francisco José; Santoro, Fabrizio (2018-03-09)
Methods to compute vibronic spectra of rigid systems are mature enough to become standard, however, when modelling complex systems is convenient to consider one part that represent the “true” system (i.e. chromophore in a ... -
Voltage selection of physisorbed or chemisorbed 4-cyanobenzoate on a nanostructured silver electrode and the dual electronic structure of charged metal-molecule hybrids.
Valdivia Mantas, Samuel; Ávila-Ferrer, Francisco José; Otero-Fernández-de-Molina, Juan Carlos
; López-Tocón, Isabel
(Elsevier, 2021-11-30)
Applied electric potentials tune SERS wavenumbers due to vibrational Stark effect, but some modes of 4CNB- show two differentiated regions, being redshifted at more negative potentials than the potential of zero charge of ...