Show simple item record

Authordc.contributor.authorAcosta, Alison
Authordc.contributor.authorAntipán, Javier
Authordc.contributor.authorFernández, Mariano
Authordc.contributor.authorPrado, Gaspar
Authordc.contributor.authorSandoval Altamirano, Catalina Paz
Authordc.contributor.authorGunther Sapunar, Germán
Authordc.contributor.authorGutiérrez Urrutia, Izabook
Authordc.contributor.authorPoblete Castro, Ignacio
Authordc.contributor.authorVega, Andrés
Authordc.contributor.authorPizarro, Nancy
Admission datedc.date.accessioned2022-06-17T17:10:01Z
Available datedc.date.available2022-06-17T17:10:01Z
Publication datedc.date.issued2021
Cita de ítemdc.identifier.citationRSC Adv., 2021, 11, 31959es_ES
Identifierdc.identifier.other10.1039/d1ra06416a
Identifierdc.identifier.urihttps://repositorio.uchile.cl/handle/2250/186127
Abstractdc.description.abstractIn 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
Patrocinadordc.description.sponsorshipComision 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/Res_ES
Lenguagedc.language.isoenes_ES
Publisherdc.publisherRoyal Soc Chemistry, Englandes_ES
Type of licensedc.rightsAttribution-NonCommercial-NoDerivs 3.0 United States*
Link to Licensedc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/us/*
Sourcedc.sourceRSC Advanceses_ES
Keywordsdc.subjectLigand substitution-reactionses_ES
Keywordsdc.subjectPhotophysical propertieses_ES
Keywordsdc.subjectPhotosensitized generationes_ES
Keywordsdc.subjectPolypyridine complexeses_ES
Keywordsdc.subjectLuminescent rhenium (I)es_ES
Keywordsdc.subjectElectronic-structurees_ES
Keywordsdc.subjectSinglet oxygenes_ES
Keywordsdc.subjectRe (I)es_ES
Keywordsdc.subjectCrystales_ES
Keywordsdc.subjectStrategieses_ES
Títulodc.titlePhotochemistry of P,N-bidentate rhenium(I) tricarbonyl complexes: reactive species generation and potential application for antibacterial photodynamic therapyes_ES
Document typedc.typeArtículo de revistaes_ES
dc.description.versiondc.description.versionVersión publicada - versión final del editores_ES
dcterms.accessRightsdcterms.accessRightsAcceso abiertoes_ES
Catalogueruchile.catalogadorcfres_ES
Indexationuchile.indexArtículo de publícación WoSes_ES
Indexationuchile.indexArtículo de publicación SCOPUSes_ES


Files in this item

Icon

This item appears in the following Collection(s)

Show simple item record

Attribution-NonCommercial-NoDerivs 3.0 United States
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 3.0 United States