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dc.contributor.author
Gutierrez, Jorge A.
dc.contributor.author
Falcone, Ruben Dario
dc.contributor.author
Silber, Juana J.
dc.contributor.author
Correa, Nestor Mariano
dc.date.available
2023-03-10T12:02:03Z
dc.date.issued
2012-09
dc.identifier.citation
Gutierrez, Jorge A.; Falcone, Ruben Dario; Silber, Juana J.; Correa, Nestor Mariano; C343 behavior in benzene/AOT reverse micelles. the role of the dye solubilization in the non-polar organic pseudophase; Elsevier; Dyes and Pigments; 95; 2; 9-2012; 290-295
dc.identifier.issn
0143-7208
dc.identifier.uri
http://hdl.handle.net/11336/190148
dc.description.abstract
The behavior of coumarin 343 (C343), a common molecular probe utilized in solvation dynamics experiments, was studied in water/sodium 1,4-bis-2- ethylhexylsulfosuccinate (AOT)/benzene reverse micelles (RMs). In all the studies performed until now, C343 was not soluble in the organic solvent used to create the RM systems (namely different alkanes such as n-heptane, cyclohexane or isooctane). In this work we have chosen benzene as the organic solvent because C343 is completely soluble at the work concentration used (∼10 -6 M). Thus, a well known AOT RM system: benzene/AOT/water has been used in order to gain insights, for the first time, on how the RMs' formation can affect the C343 spectroscopic behavior. Dissolved in pure benzene C343 exists as a dimer since the intermolecular H-bond interactions are very strong in this solvent. When introduced to the AOT RMs, C343 resides in the RMs' interface and, at low occupation number the probability of finding more than one C343 molecule is reduced and only C343 monomer species is detected. From the spectral changes it was possible to determine the critical micelle concentration at W 0 = 0 and 10 and the C343 partition constants between two pseudophases. In summary, in this work we have shown how the spectroscopic behavior of C343 is dramatically altered because of the partition of the dye to the AOT RMs' interfaces.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
AOT
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COUMARIN C343
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HYDROGEN BOND
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MICELAR INTERFACE
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MOLECULAR PROBE
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REVERSE MICELLE
dc.subject.classification
Físico-Química, Ciencia de los Polímeros, Electroquímica
dc.subject.classification
Ciencias Químicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
C343 behavior in benzene/AOT reverse micelles. the role of the dye solubilization in the non-polar organic pseudophase
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-03-05T15:35:43Z
dc.journal.volume
95
dc.journal.number
2
dc.journal.pagination
290-295
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Gutierrez, Jorge A.. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina
dc.description.fil
Fil: Falcone, Ruben Dario. 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: Silber, Juana J.. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina
dc.description.fil
Fil: Correa, Nestor Mariano. 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.journal.title
Dyes and Pigments
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0143720812001155
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.dyepig.2012.04.018
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