Listar QF - Contribuciones a congresos científicos por fecha de publicación
Mostrando ítems 21-40 de 154
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Chameleon-like behaviour of cyclo[n]paraphenylenes in complexes with C70: on their impressive electronic and structural adaptability as probed by Raman spectroscopy
(2014-09-11)A series of four 1:1 host-guest supramolecular complexes of [n]CPPs and C70 have been analyzed by Raman spectroscopy in solid state and complemented with the analysis of their spectroscopic responses under mechanical and ... -
Diradical-mediated weak intermolecular sigma bond formation. Influence of the quinoidal-to-aromatic interplay on the giant and reversible chromism of a novel thienoquinoidal derivative
(2014-10-06)En esta comunicación se presenta el estudio espectroscópico y teórico de un nuevo derivado de naftoditiofeno que presenta una gran variación del color al aplicarle diversos estímulos muy débiles (Temeperatura, presión, ... -
Bases espectroscópicas de la relación estructura-carácter birradical-propiedad en sistemas proaromáticos pi-conjugados derivados de p-QDM
(2014-10-06)En esta comunicación se estudia, mediante diversos tipos de espectroscopias y haciendo hincapié en la espectroscopia Raman, el efecto que modificaciones estructurales como el aumento de la longitud de la cadena o la ... -
Investigaciones arqueométricas en las cuevas de Ardales y Las Palomas de Teba (Comarca del Guadalteba, Málaga)
(2014-10-14)We have performed a Raman miscroscopic analysis of a series of prehistoric artifacs found inside the Ardales Cave (Ardales, Málaga, Spain), such as a number of fixed and portable fat-burning stone lamps, some lithic tools ... -
Pi-Dimerization of Oligothienoacene Radical Cations
(2014-10-29)Oligothienoacenes, the fused-ring analog of -linked oligothiophenes, belong to the most promising candidates for organic electronic applications. This is in part due to their densely packed solid-state structures resulting ... -
Organic Materials: The Effect of Subtle Modifications on Device Performance
(2014-11-07)In the search of new high-mobility polymeric semiconductors with good processability and excellent environmental stability, diverse synthetic strategies have been approached. One of the most widely used consists in the ... -
El SERS como sensor de pH en entornos nanométricos
(2015-02-09)La Espectroscopia SERS (Surface-Enhanced Raman Spectroscopy) se caracteriza por la enorme intensificación de la señal Raman de una molécula cuando se encuentra en las proximidades de una superficie metálica rugosa a escala ... -
Semiconductores para electrónica orgánica: el papel de la espectroscopía vibracional
(2015-02-19)La búsqueda de nuevas tecnologías capaces de reemplazar a la tecnología actual basada en silicio representa uno de los campos de investigación científica más dinámico en la actualidad. La electrónica y fotónica orgánica ... -
SERS study of thiocarbonyl compounds adsorbed on metal nanoparticles
(2015-06-03)Thiocarbonyl compounds have been reported to exhibit interesting biological and pharmacological properties but they are many often characterized by their toxicological effects. However the chemistry of thiobenzoic acid ... -
Exploring the regioselectivity for the cycloaddition of azides to alkynes catalyzed by dinuclear copper clusters (Cu2AAC) with the topology of 2rho(r) and 2rho(r)
(2015-06-16)This study constitutes an extension of a previous research on the regioselectivity of the copper catalyzed cycloaddition of azides to alkynes (1) (the CuAAC reaction) by Quantum Chemical Topological methods. In particular, ... -
Theoretical and experimental SERS study of thiocarbonyl compounds adsorbed on metal nanoparticles
(2015-06-18)Thiocarbonyl compounds have been reported to exhibit interesting biological and pharmacological properties but they are many often characterized by their toxicological effects. However the chemistry of thiobenzoic acid ... -
Elaboración de pruebas de conocimiento en un entorno virtual como método de evaluación continua
(2015-06-22)Se ha realizado una serie de pruebas de conocimiento o cuestionarios, dentro de la plataforma Moodle, como método de evaluación continua de la asignatura de Química Física General que se imparte en el primer curso del Grado ... -
Thieno[3,4-b]thiophene Oligomers and Polymers: Low-Band Gap Molecules Based on a Large Quinoidization and Synergistic Aromaticity Competition.
(2015-07-28)The thieno[3,4-b]thiophene monomer has been conceived as the building block for the preparation of thieno[3,4-b] oligothiophenes (OTTn) from a dimer to a hexamer together with their corresponding polymers (1). These ... -
Benzotrithiophenes vs. Benzo/Naptha-dithiophenes: The Effect of Star-Shaped versus Linear Conjugation on Their Electronic Structures
(2015-07-30)Star-shaped complexes of π-conjugated chromophores are currently of great interest for use in optoelectronic devices.1 Recently, different planar central cores involving three thiophene rings fused to a benzenic ring (BTTs) ... -
Quinoidization of regioregular oligo(THIENO[3,4-b]THIOPHENE)s
(2015-10-07)Caracterización de oligotiofenos -
Investigation of the long effective conjugation length in defect-free insulated molecular wires
(2016-02-17)Due to the “insulation” of the π-conjugated backbones, insulated molecular wires (IMWs) are expected to be applied to various optoelectronic applications and nanotechnology.[1] Recently, Kazunori et al have succeeded in ... -
Organic semiconductors: The effect of small modifications on device performance
(2016-03-30)In the search on new high-mobiliity semiconductors with ambipolar performances, good processability and excellent environmental stability, diverse synthetic strategies have been approached. One of the most widely used ... -
The role of the electrolyte on the SERS spectra of pyridine
(2016-04-22)SERS spectra of pyridine has been recorded on a silver electrode in a potential range from 0.0 to -1.20 V with a saline solution, pyridine / KCl (0.1M / 0.1M), by using the 514.5 nm exciting line by us [1]. Under these ... -
Chiroptical Spectroscopy of C3 Molecules
(2016-04-22)The relevance of molecules with C3 symmetry comes from the fact of many of them, upon assembling as columnar helical macromolecules, are ideal platform for electro-optical devices, for example as liquid crystals. The ... -
Effect of graphene substrate on the SERS Spectra of Aromatic bifunctional molecules on metal nanoparticles
(2016-06-27)The design of molecular sensors plays a very important role within nanotechnology and especially in the development of different devices for biomedical applications. Biosensors can be classified according to various ...