2016 |
Munoz-Perez, J; Leyton, P; Paipa, C; Soto, J P; Brunet, J; Gomez-Jeria, J S; Campos-Vallette, M Raman and Surface Enhanced Raman Scattering Study of the Orientation of Cruciform 9,10-Anthracene Thiophene and Furan Derivatives Deposited on a Gold Colloidal Surface Artículo de revista Journal of Molecular Structure, 1122 , pp. 198-204, 2016, ISSN: 0022-2860. Resumen | Enlaces | BibTeX | Etiquetas: cluster, cruciform, electronics, gold metal molecular monolayers, nanoparticles, pi-systems, polycyclic raman scattering, self-assembled sers, silver, spectroscopy, spectrum, surface-enhanced vibrational-spectra @article{RN331, title = {Raman and Surface Enhanced Raman Scattering Study of the Orientation of Cruciform 9,10-Anthracene Thiophene and Furan Derivatives Deposited on a Gold Colloidal Surface}, author = { J. Munoz-Perez and P. Leyton and C. Paipa and J.P. Soto and J. Brunet and J.S. Gomez-Jeria and M. Campos-Vallette}, url = {/brokenurl#<Go to ISI>://WOS:000381167800023}, doi = {10.1016/j.molstruc.2016.06.002}, issn = {0022-2860}, year = {2016}, date = {2016-01-01}, journal = {Journal of Molecular Structure}, volume = {1122}, pages = {198-204}, publisher = {2016 Elsevier B.V.}, abstract = {The 9,10-di(thiophen-2-yl)anthracene (TAT), 9,10-di(furan-2-yl)anthracene (FAF) and 2-[(10-(thiophen-2-yl)anthracen-9-yl)]furan (TAF) cruciform molecular systems were synthesized using one-step coupling reactions and structurally characterized via Raman, infrared, H-1 NMR, C-13 NMR and mass spectroscopies. The orientation of the analytes on a gold colloidal surface was inferred from a surface-enhanced Raman scattering (SERS) study. The metal surface interaction was driven by the S and O atoms of the thiophene and furan alpha-substituents, and the plane of the anthracene fragment remained parallel to the surface. Theoretical calculations based on a simplified molecular model for the analyte-surface interaction provide a good representation of the experimental data.}, keywords = {cluster, cruciform, electronics, gold metal molecular monolayers, nanoparticles, pi-systems, polycyclic raman scattering, self-assembled sers, silver, spectroscopy, spectrum, surface-enhanced vibrational-spectra}, pubstate = {published}, tppubtype = {article} } The 9,10-di(thiophen-2-yl)anthracene (TAT), 9,10-di(furan-2-yl)anthracene (FAF) and 2-[(10-(thiophen-2-yl)anthracen-9-yl)]furan (TAF) cruciform molecular systems were synthesized using one-step coupling reactions and structurally characterized via Raman, infrared, H-1 NMR, C-13 NMR and mass spectroscopies. The orientation of the analytes on a gold colloidal surface was inferred from a surface-enhanced Raman scattering (SERS) study. The metal surface interaction was driven by the S and O atoms of the thiophene and furan alpha-substituents, and the plane of the anthracene fragment remained parallel to the surface. Theoretical calculations based on a simplified molecular model for the analyte-surface interaction provide a good representation of the experimental data. |
2015 |
Ramirez-Maureira, M; Vargas, C V; Riveros, A; Goulet, P J G; Osorio-Roman, I O Shell-Isolated Nanoparticle-Enhanced Fluorescence (Shinef) of Cdte Quantum Dots Artículo de revista Materials Chemistry and Physics, 151 , pp. 351-356, 2015, ISSN: 0254-0584. Resumen | Enlaces | BibTeX | Etiquetas: cdse chemical coatings, films, nanostructures, semiconductors, spectrum, surface, synthesis, thin @article{RN267, title = {Shell-Isolated Nanoparticle-Enhanced Fluorescence (Shinef) of Cdte Quantum Dots}, author = { M. Ramirez-Maureira and C.V. Vargas and A. Riveros and P.J.G. Goulet and I.O. Osorio-Roman}, url = {/brokenurl#<Go to ISI>://WOS:000348263600048}, doi = {10.1016/j.matchemphys.2014.12.003}, issn = {0254-0584}, year = {2015}, date = {2015-01-01}, journal = {Materials Chemistry and Physics}, volume = {151}, pages = {351-356}, publisher = {2014 Elsevier B.V.}, abstract = {We report shell-isolated nanoparticle-enhanced fluorescence (SHINEF) of CdTe quantum dots. Enhanced spectra are obtained after Ag SHINs were spread onto homogenous CdTe quantum dot/polyelectrolyte layer-by-layer (LbL) films on quartz. The thin silica shell of the SHINs effectively isolates the Ag cores, preventing short-range quenching to the metal and enabling plasmon enhancement of the quantum dot fluorescence (ca. 35 fold).}, keywords = {cdse chemical coatings, films, nanostructures, semiconductors, spectrum, surface, synthesis, thin}, pubstate = {published}, tppubtype = {article} } We report shell-isolated nanoparticle-enhanced fluorescence (SHINEF) of CdTe quantum dots. Enhanced spectra are obtained after Ag SHINs were spread onto homogenous CdTe quantum dot/polyelectrolyte layer-by-layer (LbL) films on quartz. The thin silica shell of the SHINs effectively isolates the Ag cores, preventing short-range quenching to the metal and enabling plasmon enhancement of the quantum dot fluorescence (ca. 35 fold). |
2016 |
Raman and Surface Enhanced Raman Scattering Study of the Orientation of Cruciform 9,10-Anthracene Thiophene and Furan Derivatives Deposited on a Gold Colloidal Surface Artículo de revista Journal of Molecular Structure, 1122 , pp. 198-204, 2016, ISSN: 0022-2860. |
2015 |
Shell-Isolated Nanoparticle-Enhanced Fluorescence (Shinef) of Cdte Quantum Dots Artículo de revista Materials Chemistry and Physics, 151 , pp. 351-356, 2015, ISSN: 0254-0584. |