Publicaciones 2011-2020

@article{RN378,
title = {Raman of Indigo on a Silver Surface. Raman and Theoretical Characterization of Indigo Deposited on Silicon Dioxide-Coated and Uncoated Silver Nanoparticles},
author = { G. Corales and F. Celis and J.S. Gomez-Jeria and M. Campos-Vallette and J.J. Carcamo},
url = {/brokenurl#<Go to ISI>://WOS:000404931300004},
doi = {10.1080/00387010.2017.1324493},
issn = {0038-7010},
year = {2017},
date = {2017-01-01},
journal = {Spectroscopy Letters},
volume = {50},
number = {6},
pages = {316-321},
abstract = {Raman, surface-enhanced Raman scattering, and shell isolated nanoparticles-enhanced Raman scattering techniques were used to study the indigo-nanoparticle interaction nature. Silver nanoparticles were employed with and without a silicon dioxide spacer inert layer. The SERS spectral profile, obtained using silver nanoparticles, is different from the Raman one, which led to the proposition that the indigo-silver interaction is in the range of intermolecular interactions. SERS spectral reproducibility suggests identical organization and orientation of the analyte on the metal surface. The shell isolated nanoparticles enhanced Raman scattering spectrum of indigo, obtained by using silicon dioxide coated silver nanoparticles resulted similar to its Raman spectrum. This result indicates that the indigo structure is chemically unmodified by the silicon dioxide-coated silver surface. From the shell-isolated nanoparticles-enhanced Raman scattering experiments, the electromagnetic mechanism is proposed as the reason for the spectral enhancement. Theoretical calculations allow one to infer both the indigo-silver surface interaction nature and the orientation of indigo on the surface.},
keywords = {analysis, approximations, dioxide-coated fluorescence, identification, indigo, molecular-orbital nanoparticles, raman, scattering, sers sers, shiners, silicon silver spectroscopic theories},
pubstate = {published},
tppubtype = {article}
}

@article{RN208,
title = {Surface Enhanced Raman Scattering Study of the Antioxidant Alkaloid Boldine Using Prismatic Silver Nanoparticles},
author = { M.A. Herrera and G.P. Jara and R. Villarroel and A.E. Aliaga and J.S. Gomez-Jeria and E. Clavijo and C. Garrido and T. Aguayo and M. Campos-Vallette},
url = {/brokenurl#<Go to ISI>://WOS:000340330900076},
doi = {10.1016/j.saa.2014.05.070},
issn = {1386-1425},
year = {2014},
date = {2014-01-01},
journal = {Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy},
volume = {133},
pages = {591-596},
publisher = {2014 Elsevier B.V.},
abstract = {Prismatic silver nanoparticles (PNps) were used in the surface enhanced Raman scattering (SEAS) study of the antioxidant alkaloid boldine (5,6,6a,7-tetrahydro-1,10-dimethoxy-6-methyl-4H-dibenzo[de,g]quinoline-2,9-diol). Prismatic and quasi-spherical (QsNps) silver nanoparticles were synthesized and characterized by UV Vis spectra, topographic profile (AFM) and zeta potential measurements. Raman and infrared (IR) spectra of the boldine were registered. Theoretical model calculations of the boldine onto the Ag surface predict a nearly coplanar orientation of the benzo[de]quinoline moiety and non-bonded interactions (electrostatic).},
keywords = {approximations, aromatic-hydrocarbons, boldine, enhanced extended hartree-fock huckel molecular-orbital nanoparticles, polycyclic prismatic raman scattering, sers silver spectroscopy, surface theories, theory, type},
pubstate = {published},
tppubtype = {article}
}

@article{carcamo2012proline,
title = {Proline and Hydroxyproline Deposited on Silver Nanoparticles. A Raman, Sers and Theoretical Study},
author = { J.J. Carcamo and A.E. Aliaga and E. Clavijo and C. Garrido and J.S. Gomez-Jeria and M. Campos-Vallette},
url = {/brokenurl#<Go to ISI>://WOS:000305391800012},
doi = {10.1002/jrs.3092},
issn = {0377-0486},
year = {2012},
date = {2012-01-01},
journal = {Journal of Raman Spectroscopy},
volume = {43},
number = {6},
pages = {750-755},
publisher = {2011 John Wiley & Sons, Ltd.},
abstract = {The Raman and surface-enhanced Raman scattering (SERS) spectra of l-proline (Pro) and trans-4-hydroxy- l-proline (Hyp) were recorded. SERS spectra were obtained on colloidal Ag prepared by reduction with hydroxylamine. Allowing sufficient time for Pro and Hyp to adjust in the colloidal solution resulted fundamentally in obtaining unique and reproducible SERS spectra. Hyp stabilizes on the surface more rapidly than Pro. The spectral analysis indicates that Pro interacts with the Ag surface through the carboxylate group. The interaction of Hyp with the metal surface occurs through the amino, methylene and carboxylate moieties of the molecule. The spectroscopic results are supported by quantum chemical calculations, performed using extended Huckel theory (EHT) of the title compounds interacting with an Ag cluster model. The assignment of the Raman bands was supported by a normal coordinate analysis performed through Becke, three-parameter, LeeYangParr/6-311?G*?+?calculations.},
keywords = {amino-acids, approximations, calculations, l-proline, molecular-orbital raman raman, scattering, spectra spectroscopy, surface-enhanced theoretical theories, trans-4-hydroxy-},
pubstate = {published},
tppubtype = {article}
}