Author | dc.contributor.author | Acosta, Alison | |
Author | dc.contributor.author | Antipán, Javier | |
Author | dc.contributor.author | Fernández, Mariano | |
Author | dc.contributor.author | Prado, Gaspar | |
Author | dc.contributor.author | Sandoval Altamirano, Catalina Paz | |
Author | dc.contributor.author | Gunther Sapunar, Germán | |
Author | dc.contributor.author | Gutiérrez Urrutia, Izabook | |
Author | dc.contributor.author | Poblete Castro, Ignacio | |
Author | dc.contributor.author | Vega, Andrés | |
Author | dc.contributor.author | Pizarro, Nancy | |
Admission date | dc.date.accessioned | 2022-06-17T17:10:01Z | |
Available date | dc.date.available | 2022-06-17T17:10:01Z | |
Publication date | dc.date.issued | 2021 | |
Cita de ítem | dc.identifier.citation | RSC Adv., 2021, 11, 31959 | es_ES |
Identifier | dc.identifier.other | 10.1039/d1ra06416a | |
Identifier | dc.identifier.uri | https://repositorio.uchile.cl/handle/2250/186127 | |
Abstract | dc.description.abstract | In this work, we describe the photoisomerization of facial rhenium(I) tricarbonyl complexes bearing P,Nbidentate
pyridyl/phosphine ligands with different chelating rings and anions: RePNBr, RePNTfO, and
RePNNBr, which are triggered under irradiation at 365 nm in solutions. The apparent photodegradation
rate constants (kapp) depend on the coordinating ability of the solvent, being lowest in acetonitrile. The
kapp value increases as the temperature rises, suggesting a reactive IL excited state thermally populated
from the MLCT excited state involved. Using the Eyring equation, positive activation enthalpies (DHs)
accompanied by high negative values for the activation entropy (DSs) were obtained. These results
suggest whatever the P,N-ligand or anion, the reaction proceeds through a strongly solvated or
a compact transition state, which is compatible with an associative mechanism for the
photoisomerization. A 100-fold decrease in the log10 CFU value is observed for E. coli and S. aureus in
irradiated solutions of the compounds, which follows the same tendency as their singlet oxygen
generation quantum yield: RePNBr > RePNTfO > RePNNBr, while no antibacterial activity is observed in
the darkness. This result indicates that the generation of singlet oxygen plays a key role in the
antibacterial capacity of these complexes. | es_ES |
Patrocinador | dc.description.sponsorship | Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT)
CONICYT FONDECYT 1200903
1200418
1160749
1160546
Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT)
CONICYT PIA/ANILLOS ACT 1404
ANID-PIA-Anillo INACH ACT192057
UNAB DI-1253-16/R | es_ES |
Lenguage | dc.language.iso | en | es_ES |
Publisher | dc.publisher | Royal Soc Chemistry, England | es_ES |
Type of license | dc.rights | Attribution-NonCommercial-NoDerivs 3.0 United States | * |
Link to License | dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/us/ | * |
Source | dc.source | RSC Advances | es_ES |
Keywords | dc.subject | Ligand substitution-reactions | es_ES |
Keywords | dc.subject | Photophysical properties | es_ES |
Keywords | dc.subject | Photosensitized generation | es_ES |
Keywords | dc.subject | Polypyridine complexes | es_ES |
Keywords | dc.subject | Luminescent rhenium (I) | es_ES |
Keywords | dc.subject | Electronic-structure | es_ES |
Keywords | dc.subject | Singlet oxygen | es_ES |
Keywords | dc.subject | Re (I) | es_ES |
Keywords | dc.subject | Crystal | es_ES |
Keywords | dc.subject | Strategies | es_ES |
Título | dc.title | Photochemistry of P,N-bidentate rhenium(I) tricarbonyl complexes: reactive species generation and potential application for antibacterial photodynamic therapy | es_ES |
Document type | dc.type | Artículo de revista | es_ES |
dc.description.version | dc.description.version | Versión publicada - versión final del editor | es_ES |
dcterms.accessRights | dcterms.accessRights | Acceso abierto | es_ES |
Cataloguer | uchile.catalogador | cfr | es_ES |
Indexation | uchile.index | Artículo de publícación WoS | es_ES |
Indexation | uchile.index | Artículo de publicación SCOPUS | es_ES |