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Authordc.contributor.authorDe la Fuente, Julio 
Authordc.contributor.authorAliaga, Christian 
Authordc.contributor.authorPoblete, Cristian 
Authordc.contributor.authorZapata, Gerald 
Authordc.contributor.authorJullian Matthaei, Carolina 
Authordc.contributor.authorSaitz Barría, Claudio 
Authordc.contributor.authorCañete, Alvaro 
Authordc.contributor.authorKciuk, Gabriel 
Authordc.contributor.authorSobarzo Sánchez, Eduardo 
Authordc.contributor.authorBobrowski, Krzysztof 
Cita de ítemdc.identifier.citationJournal of Physical Chemistry A, Volumen 113, Issue 27, 2018, Pages 7737-7747
Abstractdc.description.abstractPhotoreduction of oxoisoaporphine (OIA) (l-aza-benzo-[de]anthracen-7-one) and its 5-methoxy (5-MeOOIA) derivative by selected amines (two non-a-hydrogen-donating amines (l,4-diaza[2.2.2]-bicyclooctane (DABCO) and 2,2,6,6-tetramethylpiperidine (TMP)) and three a-hydrogen-donating amines (triethylamine (TEA), diethylmethylamine (DEMA), and dimethylethylamine (DMEA))) has been studied in deaerated neat acetonitrile solutions using laser flash and steady-state photolysis. The triplet excited states of OIA and 5-MeOOIA are characterized by intense absorption maxima located at λmax = 450 nm and lifetimes of 34.7 ± 0.5 and 44.6 ± 0.4 μs, respectively. In the presence of tertiary amines, both triplets are quenched with a rate constant that varies from the near diffusion limit (>10 9 M-1 s-1) to a rather low value (∼10 7 M-1 s-1) and shows the expected dependence on the reduction potential for one-electron-transfer reactions. The transient absorption spectra observed after quenching of the resp
Type of licensedc.rightsAttribution-NonCommercial-NoDerivs 3.0 Chile
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Sourcedc.sourceJournal of Physical Chemistry A
Keywordsdc.subjectPhysical and Theoretical Chemistry
Títulodc.titlePhotoreduction of oxoisoaporphines by amines: Laser flash and steady-state photolysis, pulse radiolysis, and TD-DFT studies
Document typedc.typeArtículo de revista
Indexationuchile.indexArtículo de publicación SCOPUS

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