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Synthesis, characterization and photoinduced charge separation of carbon nanohorn-oligothienylenevinylene hybrids

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Synthesis, characterization and photoinduced charge separation of carbon nanohorn-oligothienylenevinylene hybrids

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dc.contributor.author Vizuete, Maria es_ES
dc.contributor.author Gomez-Escalonilla, Maria J. es_ES
dc.contributor.author Barrejon, M es_ES
dc.contributor.author Fierro, Jose Luis es_ES
dc.contributor.author Zhang, Minfang es_ES
dc.contributor.author Yudasaka, Masako es_ES
dc.contributor.author Iijima, Sumio es_ES
dc.contributor.author Atienzar Corvillo, Pedro Enrique es_ES
dc.contributor.author García Gómez, Hermenegildo es_ES
dc.contributor.author Langa, Fernando es_ES
dc.date.accessioned 2017-10-03T07:33:56Z
dc.date.available 2017-10-03T07:33:56Z
dc.date.issued 2016-01-21
dc.identifier.issn 1463-9076
dc.identifier.uri http://hdl.handle.net/10251/88518
dc.description.abstract [EN] The covalent coupling between oligo(thienylenevinylenes) (nTVs) and carbon nanohorns (CNHs) has been investigated. The resulting nanohybrids have been characterized by a combination of several techniques, including thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS), high-resolution transmission electron microscopy (HR-TEM) and Raman spectroscopy. The photophysical properties of the new hybrids were investigated by steady-state and time-resolved spectroscopic techniques. A transient signal characterized by two kinetic regimes, one short decay within 0.5 mu s corresponding to around 80% of the total signal and another much longer-lived decay of 10 ms, has been detected. The transient absorption spectra are characterized by a continuous absorption that increases in intensity towards shorter wavelengths, with a maximum at 430 nm. These transient signals have been assigned to the chargeseparated state delocalized on CNHs based on the quenching behavior and by comparison with the photophysical properties of nTV in the absence and presence of quenchers. The photophysical behavior of covalent nTV-CNH conjugates with microsecond transients due to electrons and holes on CNHs contrasts with the absence of any transient for analogous nTV-C-60 conjugates, for which charge separation was not observed at timescales longer than nanoseconds. The photochemical behavior of CNHs is believed to derive from the amphoteric (electron donor and acceptor) properties of CNHs and from the larger number of carbon atoms (efficient delocalization) in CNHs compared with C-60. es_ES
dc.description.sponsorship Financial support from the Spanish Ministry of Economy and Competitiveness (Severo Ochoa, CTQ2011-26455, CTQ201232315 and CTQ2013-48252-P) and Junta de Comunidades de Castilla-La Mancha (PEII-2014-014-P) is gratefully acknowledged. P. A. also thanks the Spanish Ministry of Science and Innovation for a Ramon y Cajal research associate contract (RYC-2012-10702) and the Generalitat Valenciana for the grant GV-2014/101. M. B. thanks the MINECO for a doctoral FPI grant. We also acknowledge M. C. Cuquerella for performing the femtosecond spectroscopy measurements.
dc.language Inglés es_ES
dc.publisher Royal Society of Chemistry es_ES
dc.relation.ispartof Physical Chemistry Chemical Physics es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject ELECTRON-TRANSFER PROCESSES es_ES
dc.subject EFFICIENT MOLECULAR WIRES es_ES
dc.subject THIENYLENEVINYLENE OLIGOMERS es_ES
dc.subject CHEMICAL-MODIFICATION es_ES
dc.subject RAMAN MODES es_ES
dc.subject SOLAR-CELLS es_ES
dc.subject NANOTUBES es_ES
dc.subject FUNCTIONALIZATION es_ES
dc.subject ENERGY es_ES
dc.subject PORPHYRIN es_ES
dc.subject.classification QUIMICA ANALITICA es_ES
dc.subject.classification QUIMICA ORGANICA es_ES
dc.title Synthesis, characterization and photoinduced charge separation of carbon nanohorn-oligothienylenevinylene hybrids es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1039/c5cp05734e
dc.relation.projectID info:eu-repo/grantAgreement/MICINN//CTQ2011-26455/ES/SINTESIS, CARACTERIZACION Y AUTOORGANIZACION DE SISTEMAS ELECTROACTIVOS PARA LA CONSTRUCCION DE CELULAS SOLARES ORGANICAS/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/JCCM//PEII-2014-014-P/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/GVA//GV%2F2014%2F101/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/MINECO//RYC-2012-10702/ES/RYC-2012-10702/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/MINECO//CTQ2012-32315/ES/REDUCCION FOTOCATALITICA DEL DIOXIDO DE CARBONO/
dc.relation.projectID info:eu-repo/grantAgreement/MINECO//CTQ2013-48252-P/ES/NANOESTRUCTURAS DE CARBONO Y SISTEMAS PI-CONJUGADOS PARA APLICACIONES EN ELECTRONICA MOLECULAR Y FOTOVOLTAICA/
dc.rights.accessRights Cerrado es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto Universitario Mixto de Tecnología Química - Institut Universitari Mixt de Tecnologia Química es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Química - Departament de Química es_ES
dc.description.bibliographicCitation Vizuete, M.; Gomez-Escalonilla, MJ.; Barrejon, M.; Fierro, JL.; Zhang, M.; Yudasaka, M.; Iijima, S.... (2016). Synthesis, characterization and photoinduced charge separation of carbon nanohorn-oligothienylenevinylene hybrids. Physical Chemistry Chemical Physics. 18(3):1828-1837. https://doi.org/10.1039/c5cp05734e es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://doi.org/10.1039/c5cp05734e es_ES
dc.description.upvformatpinicio 1828 es_ES
dc.description.upvformatpfin 1837 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 18 es_ES
dc.description.issue 3 es_ES
dc.relation.senia 328564 es_ES
dc.identifier.eissn 1463-9084
dc.identifier.pmid 26678457
dc.contributor.funder Ministerio de Ciencia e Innovación es_ES
dc.contributor.funder Junta de Comunidades de Castilla-La Mancha es_ES
dc.contributor.funder Generalitat Valenciana es_ES
dc.contributor.funder Ministerio de Economía y Competitividad es_ES
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