Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/10395
Title: | Monitoring Ternary Systems of C12E5/Water/Tetradecane via the Fluorescence of Solvatochromic Probes | Authors: | Hungerford, Graham Castanheira, Elisabete M. S. Oliveira, M. Elisabete C. D. Real Miguel, M. da Graça Burrows, Hugh D. |
Issue Date: | 15-Apr-2002 | Publisher: | American Chemical Society | Citation: | The Journal of Physical Chemistry B. 106:16 (2002) 4061-4069 | Abstract: | In this work ternary systems of the nonionic surfactant C12E5 (C12H25(OCH2CH2)5OH), tetradecane, and water were probed by the use of steady state and time-resolved fluorescence. Microemulsions, which were rich in oil, rich in water, and also both continuous in oil and water, were monitored via the application of solvatochromic fluorescent probes. The hydrophobic laser dye Nile Red was used to report from the side of the oil−surfactant interface, while Prodan, which is soluble in each of the constituent solvents, was used to provide a global picture. To complement these, the hydrophilic dye 4-(2-(dimethylamino)phenyl)-1-methylpyridinium iodide was used to report from the side of the water−surfactant interface. The results show the partitioning of the probes into different environments within the ternary systems as evident from the solvatochromic shift in the emission spectra, uncovering similarities between the water-rich and bicontinuous regions in terms of polarity. Estimates for the polarity of the environments in which the fluorophores are solubilized are made in terms of the ET(30) parameter scale. The time-resolved kinetics of some of the probes have been found to be viscosity dependent, which brought out similarities between the bicontinuous and oil-rich regions along with the observation of the effect of solvent relaxation in these ternary systems. | URI: | https://hdl.handle.net/10316/10395 | ISSN: | 1520-6106 | DOI: | 10.1021/jp013047v | Rights: | openAccess |
Appears in Collections: | FCTUC Química - Artigos em Revistas Internacionais |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Monitoring Ternary Systems of C12E5.pdf | 144.41 kB | Adobe PDF | View/Open |
SCOPUSTM
Citations
49
checked on Nov 9, 2022
WEB OF SCIENCETM
Citations
5
49
checked on May 2, 2023
Page view(s)
391
checked on Oct 8, 2024
Download(s)
372
checked on Oct 8, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.