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dc.contributor.author | Vayá Pérez, Ignacio | es_ES |
dc.contributor.author | Brazard, J. | es_ES |
dc.contributor.author | Gustavsson, T. | es_ES |
dc.contributor.author | Markovitsi, D. | es_ES |
dc.date.accessioned | 2013-09-04T11:15:03Z | |
dc.date.available | 2013-09-19T22:31:04Z | |
dc.date.issued | 2012 | |
dc.identifier.issn | 1474-905X | |
dc.identifier.uri | http://hdl.handle.net/10251/31760 | |
dc.description.abstract | [EN] DNA double-stranded oligomers are studied by steady-state and time-resolved fluorescence spectroscopy from the femtosecond to the nanosecond time-scale, following excitation at 267 nm. It is shown that emission arises from three types of excited states. (i) Bright pi pi* states emitting around 330 nm and decaying on the sub-picosecond time-scale with an average lifetime of ca. 0.4 ps and a quantum yield lower than 4 x 10(-6). (ii) Excimers/exciplexes emitting around 430 nm and decaying on the sub-nanosecond time-scale. (iii) Excited states emitting mainly at short wavelengths (lambda < 330 nm) and decaying on the nanosecond time-scale, possibly correlated to GC pairs. The properties of the examined duplexes, exhibiting significant disorder with respect to the nearest neighbour base sequence, are radically different than those of the much longer and disordered calf thymus DNA. Such behaviour suggests that long range and/or sequence effects play a key role in the fate of excitation energy. | es_ES |
dc.description.sponsorship | The French Agency for Research (ANR-10-BLAN-0809-01) and the Conselleria de Educacion-Generalitat Valenciana (VALi+D program to I.V., no. 2010033) are acknowledged for financial support. | |
dc.language | Inglés | es_ES |
dc.publisher | Royal Society of Chemistry | es_ES |
dc.relation.ispartof | Photochemical & Photobiological Sciences Photochemical and Photobiological Sciences | es_ES |
dc.rights | Reserva de todos los derechos | es_ES |
dc.subject | Double Helices | es_ES |
dc.subject | Natural DNA | es_ES |
dc.subject | Femtosecond Spectroscopy | es_ES |
dc.subject | Resolved Fluorescence | es_ES |
dc.subject | Room-Temperature | es_ES |
dc.subject | Energy-Transfer | es_ES |
dc.subject | Model | es_ES |
dc.subject | Nucleosides | es_ES |
dc.subject | Absorption | es_ES |
dc.subject | Excitation | es_ES |
dc.subject.classification | QUIMICA ANALITICA | es_ES |
dc.title | Electronically excited states of DNA oligonucleotides with disordered base sequences studied by fluorescence spectroscopy | es_ES |
dc.type | Artículo | es_ES |
dc.identifier.doi | 10.1039/c2pp25180a | |
dc.relation.projectID | info:eu-repo/grantAgreement/ANR//ANR-10-BLAN-0809/FR/Photo-induced energy transfer in methylated DNA helices and its relevance to UV damage : an interactive theoretical-experimental study/DNAexciton/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/GVA//GV%2F2010033/ | es_ES |
dc.rights.accessRights | Cerrado | es_ES |
dc.contributor.affiliation | Universitat Politècnica de València. Departamento de Química - Departament de Química | es_ES |
dc.description.bibliographicCitation | Vayá Pérez, I.; Brazard, J.; Gustavsson, T.; Markovitsi, D. (2012). Electronically excited states of DNA oligonucleotides with disordered base sequences studied by fluorescence spectroscopy. Photochemical & Photobiological Sciences Photochemical and Photobiological Sciences. 11(11):1767-1773. https://doi.org/10.1039/c2pp25180a | es_ES |
dc.description.accrualMethod | S | es_ES |
dc.relation.publisherversion | http://dx.doi.org/10.1039/c2pp25180a | es_ES |
dc.description.upvformatpinicio | 1767 | es_ES |
dc.description.upvformatpfin | 1773 | es_ES |
dc.type.version | info:eu-repo/semantics/publishedVersion | es_ES |
dc.description.volume | 11 | es_ES |
dc.description.issue | 11 | es_ES |
dc.relation.senia | 233792 | |
dc.identifier.pmid | 23034563 | |
dc.contributor.funder | Agence Nationale de la Recherche, Francia | |
dc.contributor.funder | Generalitat Valenciana |