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dc.contributor.author
Arbeloa, Ernesto Maximiliano  
dc.contributor.author
Previtali, Carlos Mario  
dc.contributor.author
Bertolotti, Sonia Graciela  
dc.date.available
2018-09-12T13:29:31Z  
dc.date.issued
2016-04  
dc.identifier.citation
Arbeloa, Ernesto Maximiliano; Previtali, Carlos Mario; Bertolotti, Sonia Graciela; Photochemical study of Eosin-Y with PAMAM dendrimers in aqueous solution; Elsevier Science; Journal of Luminescence; 180; 4-2016; 369-375  
dc.identifier.issn
0022-2313  
dc.identifier.uri
http://hdl.handle.net/11336/59256  
dc.description.abstract
A steady-state and time-resolved study of the xanthene dye Eosin-Y (Eos) in the presence of amino-terminated polyamidoamine (PAMAM) dendrimers in alkaline aqueous solution is presented. Stationary photolysis experiments in deaerated and air equilibrated solutions were carried out. The absorption spectra of the photolyzed solutions in the absence of oxygen showed the formation of several intermediate species. With the aid of laser flash photolysis technique (LFP) those transients could be ascribed to semireduced and partially debrominated species of Eos. The triplet quenching rate-constant (3kq) and radical quantum yields (ΦR) were determined by LFP. In the presence of PAMAM, the triplet lifetime of Eos is greatly decreased and the data fitted to a Stern–Volmer treatment. These experiments indicated that the electron transfer from dendrimers to Eos is a highly favored process. Based on the results found in this work, we concluded that Eos/PAMAM couple might act as a promising photoinitiator of vinyl polymerization with low ecological impact.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Elsevier Science  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
EOSIN-Y  
dc.subject
LASER FLASH PHOTOLYSIS  
dc.subject
PAMAM DENDRIMERS  
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TRIPLET STATE  
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XANTHENE DYES  
dc.subject.classification
Otras Ciencias Químicas  
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Ciencias Químicas  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Photochemical study of Eosin-Y with PAMAM dendrimers in aqueous solution  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2018-08-15T14:00:37Z  
dc.journal.volume
180  
dc.journal.pagination
369-375  
dc.journal.pais
Países Bajos  
dc.journal.ciudad
Amsterdam  
dc.description.fil
Fil: Arbeloa, Ernesto Maximiliano. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina  
dc.description.fil
Fil: Previtali, Carlos Mario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina  
dc.description.fil
Fil: Bertolotti, Sonia Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina  
dc.journal.title
Journal of Luminescence  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/j.jlumin.2016.08.017  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0022231316305245