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Dive into the research topics where Juan Teodomiro López-Navarrete is active.

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Featured researches published by Juan Teodomiro López-Navarrete.


Biochimica et Biophysica Acta | 1998

DNA-chlorpheniramine interaction studied by spectroscopic techniques

Miguel Ángel Medina; F.J. Ramírez; Joaquı́n Ruiz-Chica; Teresa Chavarrı́a; Juan Teodomiro López-Navarrete; Francisca Sánchez-Jiménez

It was previously studied that the antihistaminic chlorpheniramine elicits a biphasic response on cell growth and regulates polyamine metabolism, as described for polyamines. In part, polyamine effects on macromolecular synthesis and cell growth are attributed to nucleic acid:polyamine interactions. In this work, we have tested the hypothesis of a DNA:chlorpheniramine interaction, using fluorometry, FTIR and Raman spectroscopic techniques. The results indicate that DNA:chlorpheniramine interaction occurs inducing conformational changes in the macromolecule by affecting both phosphodiester bonds and bases. Results open new perspectives for characterization of action mechanisms of natural or synthetic diamines with pharmacological or physiological importance.


Physical Chemistry Chemical Physics | 2016

Modulation of the exfoliated graphene work function through cycloaddition of nitrile imines

Myriam Barrejón; María J. Gómez-Escalonilla; José Luis G. Fierro; Pilar Prieto; José R. Carrillo; Antonio M. Rodriguez; Gonzalo Abellán; Ma Cruz López-Escalante; M. Gabás; Juan Teodomiro López-Navarrete; Fernando Langa

After the feasibility of the 1,3-dipolar cycloaddition reaction between nitrile imines and exfoliated graphene by density functional theory calculations was proved, very few-layer graphene was effectively functionalized using this procedure. Hydrazones with different electronic properties were used as precursors for the 1,3-dipoles, and microwave irradiation as an energy source enabled the reaction to be performed in a few minutes. The anchoring of organic addends on the graphene surface was confirmed by Raman spectroscopy, X-ray photoelectron spectroscopy (XPS) and thermogravimetric analysis. Ultraviolet photoelectron spectroscopy (UPS) was used to measure the work function and band gap of these new hybrids. Our results demonstrate that it is possible to modulate these important electronic valence band parameters by tailoring the electron richness of the organic addends and/or the degree of functionalization.


Archive | 2018

Novel push-pull chromophores to prepare electro-optic modulators

Sergio Gámez-Valenzuela; David Neusser; Niklas Hoppe; Manfred Berroth; Belén Villacampa; Juan Teodomiro López-Navarrete; Christian Rothe; Sabine Ludwigs; Raquel Andreu; María del Carmen Ruíz-Delgado


Archive | 2017

Cálculos DFT en materiales orgánicos conjugados: importancia en el análisis de los datos experimentales

Rafael C. González-Cano; Juan Teodomiro López-Navarrete; María del Carmen Ruíz-Delgado


Archive | 2017

Understanding organic materials performance in field-effect transistors

Rocio Ponce-Ortiz; Iratxe Arrechea-Marcos; Guzmán L. Espejo; Juan Teodomiro López-Navarrete; José L. Segura


Archive | 2017

Caracterización de sistemas basados en carbazol con transformación reversible entre birradical aislado y σ-agregados

Irene Badía-Domínguez; Sergio Gámez-Valenzuela; Cristina Capel-Ferrón; Rocio Ponce-Ortiz; Juan Teodomiro López-Navarrete; Víctor Hernández-Jolín; František Hartl; Hongxiang Li; M. Carmen Ruiz Delgado


Archive | 2017

Del estudio de la molécula al dispositivo

Iratxe Arrechea Marcos; Rocío Ponce Ortiz; Juan Teodomiro López-Navarrete


Archive | 2016

Conjugated Polymers for Organic Electronics: Structural and Electronic Characteristics

Rafael C. González-Cano; Juan Teodomiro López-Navarrete; M. Carmen Ruiz Delgado


Archive | 2016

Tuning of the electronic levels of oligothiophene-naphthalimide semiconductors: in the search of ambipolar behaviour

Iratxe Arrechea-Marcos; Alejandro De-la-Peña; María J. Mancheño; María del Carmen Ruíz-Delgado; José L. Segura; Juan Teodomiro López-Navarrete; Rocio Ponce-Ortiz


Archive | 2016

Materiales conjugados en electrónica orgánica: aspectos electrónicos y estructurales

Rafael C. González-Cano; Juan Teodomiro López-Navarrete; M. Carmen Ruiz Delgado

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Tobin J. Marks

University of Southern California

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María J. Mancheño

Complutense University of Madrid

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