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Authordc.contributor.authorRosenbluth, 
Authordc.contributor.authorWeiss López, Boris 
Authordc.contributor.authorOlea, 
Admission datedc.date.accessioned2018-12-20T15:04:44Z
Available datedc.date.available2018-12-20T15:04:44Z
Publication datedc.date.issued1997
Cita de ítemdc.identifier.citationPhotochemistry and Photobiology, Volumen 66, Issue 6, 2018, Pages 802-809
Identifierdc.identifier.issn00318655
Identifierdc.identifier.other10.1111/j.1751-1097.1997.tb03228.x
Identifierdc.identifier.urihttps://repositorio.uchile.cl/handle/2250/157616
Abstractdc.description.abstractThe kinetics of fluorescence quenching of pyrene and three of its derivatives by a series of n-alkylpyridinium ions has been studied. The quenching process is diffusion controlled for all the systems studied, independent of the charge in the aromatic molecule and the size of the alkyl chain in the pyridinium ions. Pyrensulfonate, PS, and pyranine form ground-state complexes with these quenchers. The association constants were determined by using a kinetic scheme where both dynamic and static quenching were included. A linear relationship between the free energy change and number of carbon atoms was found for PS, and a methylene contribution equal to -1.1 kJ/mol was determined from the slope. A similar correlation was established for pyranine, but a slope change was observed when the alkyl chain has more than 10 carbon atoms. From the initial slope, an incremental free energy of -0.35 kJ/mol was obtained. The ground-state complex formation is determined mainly by an electrostatic intera
Lenguagedc.language.isoen
Publisherdc.publisherAmerican Society for Photobiology
Type of licensedc.rightsAttribution-NonCommercial-NoDerivs 3.0 Chile
Link to Licensedc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/
Sourcedc.sourcePhotochemistry and Photobiology
Keywordsdc.subjectBiochemistry
Keywordsdc.subjectPhysical and Theoretical Chemistry
Títulodc.titleThermodynamic and Kinetic Study of the Interaction between Alkylpyridinium Ions and Pyrene Derivatives in Aqueous Solution
Document typedc.typeArtículo de revista
Catalogueruchile.catalogadorSCOPUS
Indexationuchile.indexArtículo de publicación SCOPUS
uchile.cosechauchile.cosechaSI


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