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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  
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Ciencias Químicas  
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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