• Using Surface-enhanced Raman scattering to probe the capacitance of metallic nanostructures 

      Centeno, Silvia; Ruano, Cristina; Román-Pérez, Jéssica; López-Tocón, Isabel; Otero-Fernandezde-Molina, 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 ...
    • La desnaturalización de una proteina globular por surfactantes es monotorizada por espectroscopia Raman quiral 

      Nieto-Ortega, Belen; Hierrezuelo Osorio, Jose Manuel; Carnero-Ruiz, Cristobal; López-Navarrete, Juan Teodomiro; Casado-Cordon, Juan; [et al.] (X Simposio de Investigadores Jóvenes, 2013)
      Desnaturalización de proteínas por surfactantes ha recibido una gran atencion los últimos años debido a sus implicaciones en productos farmacéuticos, cosméticos. A lo largo de esta comunicacion se demuestra la capacidad ...
    • Revisiting the mechanism of the mono nuclear copper-catalyzed cycloaddition of azide and alkynes (CuAAC) by the topology of .... 

      Calvo-Losada, Saturnino; Pino-Gonzalez, Maria Soledad; Quirante-Sanchez, Jose Joaquin (2013-05-31)
      Se analiza el mecanismo de la reacción de cicloadición, catalizada por Cu(I), de azidas a alquinos (CuAAC), haciendo uso de métodos DFT y de herramientas de análisis de la densidad electrónica basadas en la topología de ...
    • Estudio de estados excitados y deslocaclización de carga en oligotiofenos ramificados 

      Ruíz-Delgado, María del Carmen; González-Cano, Rafael C.; Casado-Cordon, Juan; López-Navarrete, Juan Teodomiro (2013-07-30)
      Los politiofenos ramificados tridimensionales (3D) y oligotiofenos dendriméricos han sido recientemente desarrollados en la búsqueda de mejoras en los materiales para aplicaciones fotovoltaicas (por ejemplo, un mayor área ...
    • Influencia de la Atropoisomería en la Organización Helicoidal de Organogeles en oligo-p-fenilenos 

      Nieto-Ortega, Belen; Aparicio, Fátima; Najera-Albendin, Francisco; Ramírez, Francisco Javier; López-Navarrete, Juan Teodomiro; [et al.] (Real Sociedad Española de Quimica, 2013-09-04)
    • Donor-acceptor polymers for applications in organic electronics and photovoltaics 

      Ponce-Ortiz, Rocio; Mayorga-Burrezo, Paula; Casado-Cordon, Juan; López-Navarrete, Juan Teodomiro; Guo, Xugang; [et al.] (2013-09-26)
      We have synthesized a new series of high-mobility polymeric semiconductors with good processability and excellent environmental stability for organic electronics and photovoltaics. Using these materials, solar cells were ...
    • Surface-enhanced photoinduced charge transfer processes in metal-molecule nanoclusters 

      Centeno, Silvia; Ruano, Cristina; Román-Pérez, Jéssica; López-Tocón, Isabel; Soto-Martin, 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 ...
    • SECARS imaging of thiophenol adsorbed on silver colloids 

      Centeno, Silvia; Schäfer, Gerhard; Görgülü, Rabia; Otero-Fernandezde-Molina, 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 ...
    • Transferencia Competitiva en uniones a-a y a-b de oligotiofenos precursores de Modelos Dendriméricos 

      González Cano, Rafael Carlos; Ruíz-Delgado, María del Carmen; Casado-Cordon, Juan; López-Navarrete, Juan Teodomiro (2013-11-14)
      Los politiofenos ramificados tridimensionales (3D) y oligotiofenos dendriméricos han sido recientemente desarrollados en la búsqueda de mejoras en los materiales para aplicaciones fotovoltaicas (por ejemplo, un mayor área ...
    • Materiales moleculares para electrónica orgánica 

      Ponce-Ortiz, Rocio (2014-02-10)
      Se impartió un seminario especializado sobre materiales moleculares para electrónica orgánica. En el seminario, principalmente se revisaron las características deseables en los semiconductores orgánicos para obtener un ...
    • Oligo(3,4-etilendioxitiofeno-vineleno)s 

      Mayorga-Burrezo, Paula; Ponce-Ortiz, Rocio; De-la-Cruz, Pilar; López-Navarrete, Juan Teodomiro; Langa-de-la-Puente, Fernando; [et al.] (2014-02-18)
      Desde el descubrimiento de las propiedades conductoras del poliacetileno (PA)1 han sido muchas las modificaciones en la síntesis química que, manteniendo la estructura de enlaces conjugados, es decir, alternancia de dobles ...
    • π-Dimerization of Heptathienoacene Radical Cations 

      Ruíz-Delgado, María del Carmen; Capel-Ferrón, Cristina; Capdevila-Cortada, Marçal; Hartl, F.; Hernández-Jolín, Víctor; [et al.] (2014-02-24)
      Oligothienoacenes, the fused-ring analog of pi-linked oligothiophenes, belong to the most promising candidates for organic electronic applications. This is in part due to their fully planar structure that avoids conformational ...
    • Raman, SERS and DFT study of chemically-adsorbed thiobenzoic acid on silver nanoparticles 

      López-Ramírez, María Rosa; Arenas, Juan Francisco; Otero-Fernandezde-Molina, Juan Carlos; Castro, Jose Luis (2014-03-27)
      Thiocarboxylic acids are organosulphur compounds with general formula RC(O)SH. They are related to carboxylic acids by the replacement of one oxygen by sulphur. Two tautomers are possible, written as RC(S)OH and RC(O)SH. ...
    • Raman Optical Activity Monitoring the Interaction of Globular Proteins with Surfactants 

      Nieto Ortega, Belén; Hierrezuelo Osorio, Jose Manuel; Carnero-Ruiz, Cristobal; López-Navarrete, Juan Teodomiro; Casado-Cordon, Juan; [et al.] (2014-03-31)
      Protein denaturation by surfactants is related with topic as pharmaceutics, cosmetics, paints or biotechnology. This phenomenon is highly dependent on the physico-chemical properties of the denaturing agents. In this ...
    • Electrochemical SERS spectra of isonicotinic acid analyzed under a photoinduced charge-transfer mechanism 

      López-Tocón, Isabel; Román-Pérez, Jessica; Soto-Martin, Juan; Otero-Fernandezde-Molina, Juan Carlos (2014-05-28)
      Isonicotinic (IN) acid is one of the three monocarboxilic derivatives of pyridine in which the acid group is located in para-position of the heterocyclic ring. It is a weak acid (pK2=4.86) and therefore, it is not completely ...
    • Effect of the electrode potential on surface-enhanced Raman intensities of 2-methylpyrazine 

      López-Tocón, Isabel; Centeno, Silvia; Román-Pérez, Jessica; Otero-Fernandezde-Molina, 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 ...
    • Highly effective SERS nanopattern substrate. The enhancement is demonstrated using thiophenol as a molecular probe 

      López-Ramírez, María Rosa; Guerrero, A.R.; Castro, Jose Luis; Otero-Fernandezde-Molina, Juan Carlos; Aroca, R.F. (2014-07-31)
      The number of different types of Surface-enhanced Raman Scattering (SERS) substrates available for experimentation is increasing at high speed. New alternatives are introduced and explored every year in the literature ...
    • Surface-Enhanced Raman spectroscopy of thiobenzoic acid on metal nanoparticles 

      López-Ramírez, María Rosa; Arenas, Juan Francisco; Otero-Fernandezde-Molina, Juan Carlos; Castro, Jose Luis (2014-07-31)
      Molecules adsorbed on some metal surfaces such as silver, copper and gold, can exhibit enormous Surface-enhanced Raman Scattering (SERS). The SERS effect has historically been associated with substrate roughness on two ...
    • Using SERS to probe electric capacitive enhancement in nanometer-size hot spots 

      Centeno, Silvia; Ruano, Cristina; Roman-Perez, Jessica; López-Ramírez, Jessica; Soto-Martin, 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 ...
    • 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-Martin, 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 ...