dc.contributor.author | Lamas Frejo, Iker | |
dc.contributor.author | Montero Santos, Raúl | |
dc.contributor.author | Martínez Martínez, Virgina | |
dc.contributor.author | Longarte Aldama, Asier | |
dc.date.accessioned | 2024-04-18T15:22:38Z | |
dc.date.available | 2024-04-18T15:22:38Z | |
dc.date.issued | 2024 | |
dc.identifier.citation | Physical Chemistry Chemical Physics 26(4) : 3240-3252 (2024) | es_ES |
dc.identifier.issn | 1463-9084 | |
dc.identifier.issn | 1463-9076 | |
dc.identifier.uri | http://hdl.handle.net/10810/66778 | |
dc.description.abstract | We have studied the relaxation dynamics of a family of azaindole (AI) structural isomers, 4-, 5-, 6- and 7-AI, by steady-state and time-resolved methods (fs-transient absorption and fluorescence up-conversion), in solvents of different polarity. The measurements in aprotic solvents show distinctive fluorescence yields and excited state lifetimes among the isomers, which are tuned by the polarity of the medium. Guided by simple TD-DFT calculations and based on the behavior observed in the isolated species, it has been possible to address the influence of the environment polarity on the relaxation route. According to the obtained picture, the energy of the nπ* state, which is strongly dependent on the position of the pyridinic nitrogen, controls the rate of the internal conversion channel that accounts for the distinctive photophysical behavior of the isomers. On the other hand, preliminary measurements in protic media (methanol) show a very different photodynamical behavior, in which the anomalous measured fluorescent patterns are very likely the result of reactive channels (proton transfer) triggered by the electronic excitation. | es_ES |
dc.description.sponsorship | We thank the support from the Spanish MICIN through grants PGC2018-098561-B-C21 and PID2020-114347RB-C32. The work was also partially funded by the Basque Government (IT1491-22 and IT1639-22). I. Lamas thanks the UPV/EHU for his predoctoral fellowship. Technical and human support provided by SGIker (UPV/EHU, MICINN, GV/EJ, ESF) is also gratefully acknowledged. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | RSC | es_ES |
dc.relation | info:eu-repo/grantAgreement/MICIU/PGC2018-098561-B-C21 | es_ES |
dc.relation | info:eu-repo/grantAgreement/MICINN/PID2020-114347RB-C32 | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by-nc/3.0/es/ | * |
dc.title | Photodynamics of azaindoles in polar media: the influence of the environment | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | This article is licensed under a Creative Commons Attribution-Non Commercial 3.0 Unported licence. | es_ES |
dc.rights.holder | Atribución-NoComercial 3.0 España | * |
dc.relation.publisherversion | https://pubs.rsc.org/en/content/articlelanding/2024/cp/d3cp03412g | es_ES |
dc.identifier.doi | 10.1039/D3CP03412G | |
dc.departamentoes | Química física | es_ES |
dc.departamentoeu | Kimika fisikoa | es_ES |