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Safavi A, Abdollahi H, Maleki N, et al. Interaction of anionic dyes and cationic surfactants with ionic liquid character. J Colloid Interface Sci. 2008;322(1):274-80doi: 10.1016/j.jcis.2008.01.059.
Safavi, A., Abdollahi, H., Maleki, N., & Zeinali, S. (2008). Interaction of anionic dyes and cationic surfactants with ionic liquid character. Journal of colloid and interface science, 322(1), 274-80. https://doi.org/10.1016/j.jcis.2008.01.059
Safavi, A, et al. "Interaction of anionic dyes and cationic surfactants with ionic liquid character." Journal of colloid and interface science vol. 322,1 (2008): 274-80. doi: https://doi.org/10.1016/j.jcis.2008.01.059
Safavi A, Abdollahi H, Maleki N, Zeinali S. Interaction of anionic dyes and cationic surfactants with ionic liquid character. J Colloid Interface Sci. 2008 Jun 01;322(1):274-80. doi: 10.1016/j.jcis.2008.01.059. Epub 2008 Feb 26. PMID: 18406416.
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J Colloid Interface Sci. 2008 Jun 01;322(1):274-80. doi: 10.1016/j.jcis.2008.01.059. Epub 2008 Feb 26.

Interaction of anionic dyes and cationic surfactants with ionic liquid character.

Journal of colloid and interface science

A Safavi, H Abdollahi, N Maleki, S Zeinali

Affiliations

  1. Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71454, Iran. [email protected]

PMID: 18406416 DOI: 10.1016/j.jcis.2008.01.059

Abstract

The interactions of an imidazolium based ionic liquid (IL), namely 1-dodecyl-3-methylimidazolium chloride [C12 mim][Cl] with two sulfonated anionic dyes, azocarmine G and methyl orange, are studied spectrophotometrically in both acidic and basic media. ILs (with some surface active character) can interact with the above dyes and cause considerable shifts in their spectra. These interactions are then compared with some surfactant-dye interactions. Evolving factor analysis (EFA) and multivariate curve resolution-alternating least squares (MCR-ALS) are used for complete resolution of the measured spectrophotometric data. The concentration and spectral profiles of all species were calculated without any assumption of the chemical models. The spectral variation of dye solutions as a function of IL concentrations below and above the critical aggregation concentration (CAC) is analyzed using MCR-ALS as a soft-modeling technique. The ion pair formation constants between ILs and dyes were calculated using the obtained concentration profiles.

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