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Sensitized photooxidation of thyroidal hormones. Evidence for heavy atom effect on singlet molecular oxygen [O2(1Δ g)]-mediated photoreactions

Authordc.contributor.authorMiskoski, Sandra 
Authordc.contributor.authorSoltermann, Arnaldo T. 
Authordc.contributor.authorMolina, Patricia G. 
Authordc.contributor.authorGünther Sapunar, Germán 
Authordc.contributor.authorZanocco Loyola, Antonio 
Authordc.contributor.authorGarcía, Norman A. 
Cita de ítemdc.identifier.citationPhotochemistry and Photobiology, Volumen 81, Issue 2, 2018, Pages 325-332
Abstractdc.description.abstractThyronine derivatives are essential indicators of thyroid gland diseases in clinical diagnosis and are currently used as standards for developing ordinary biochemical assays. Photo-oxidation of gland hormones of the thyronine (TN) family and structurally related compounds (TN, 3,5-dliodothyronine,3,3′,5- triiodothyronine and 3,3′,5,5′-tetraiodothyronine or thyroxine) was studied using rose bengal, eosin and perinaphthenone (PN) as dye sensitizers. Tyrosine (Tyr) and two iodinated derivatives (3-iodotyrosine and 3,5-diiodotyrosine) were also included in the study for comparative purposes. Irradiation of aqueous solutions of substrates containing xanthene dyes with visible light triggers a complex series of competitive interactions, which include the triplet excited state of the dye (3Xdye*) and singlet molecular oxygen [O2(1Δg,)]- mediated and superoxide ion-mediated reactions. Rate constants for interaction with the 3Xdye*, attributed to an electron transfer process, are in the order o
Type of licensedc.rightsAttribution-NonCommercial-NoDerivs 3.0 Chile
Link to Licensedc.rights.uri
Sourcedc.sourcePhotochemistry and Photobiology
Keywordsdc.subjectPhysical and Theoretical Chemistry
Títulodc.titleSensitized photooxidation of thyroidal hormones. Evidence for heavy atom effect on singlet molecular oxygen [O2(1Δ g)]-mediated photoreactions
Document typedc.typeArtículo de revista
Indexationuchile.indexArtículo de publicación SCOPUS

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