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Nazir I, Ghezzi M, Asim MH, Phan TNQ, Bernkop-Schnürch A. Self-emulsifying drug delivery systems: About the fate of hydrophobic ion pairs on a phospholipid bilayer. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113382] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Lépori CMO, Correa NM, Silber JJ, Falcone RD, López-López M, Moyá ML. Use of Ionic Liquids-like Surfactants for the Generation of Unilamellar Vesicles with Potential Applications in Biomedicine. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:13332-13339. [PMID: 31510743 DOI: 10.1021/acs.langmuir.9b01197] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The goal of this work is to understand the influence of the counterion nature on the organized systems formed by 1,4-bis-2-ethylhexylsulfosuccinate surfactants in aqueous solutions and how these aggregates will influence the deoxyribonucleic acid (DNA)-surfactant interactions. With this in mind, two ionic liquid-like surfactants were investigated: 1-butyl-3-methylimidazolium 1,4-bis-2-ethylhexylsulfosuccinate (bmim-AOT) and 1-hexyl-3-methylimidazolium 1,4-bis-2-ethylhexylsulfosuccinate (hmim-AOT). Measurements of dynamic light scattering, ζ-potential, transmission electron microscopy, and fluorescence and UV-visible spectroscopy were performed to study the characteristics of the vesicles formed by bmim-AOT and hmim-AOT. Regarding the determination of the interaction of the surfactants with DNA, circular dichroism was used. The results obtained showed that bmim-AOT and hmim-AOT ionic liquid-like surfactants spontaneously form unilamellar vesicles in water at very low surfactant concentrations. The characteristics of these aggregates are dependent on the length of the tail of the counterions. The length of the hydrophobic chains of the counterions also influences the DNA-surfactant interactions through hydrophobic effects.
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Affiliation(s)
- Cristian M O Lépori
- Instituto de Física Enrique Gaviola (IFEG) , Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-Universidad Nacional de Córdoba (UNC), Medina Allende s/n , Ciudad Universitaria , X5016LAE Córdoba , Argentina
| | - N Mariano Correa
- Departamento de Química , Universidad Nacional de Río Cuarto (UNRC) , Agencia Postal # 3 , X5804BYA Río Cuarto , Argentina
- Instituto para el Desarrollo Agroindustrial y de la Salud (IDAS) , CONICET-UNRC , Agencia Postal # 3 , X5804BYA Río Cuarto , Argentina
| | - Juana J Silber
- Departamento de Química , Universidad Nacional de Río Cuarto (UNRC) , Agencia Postal # 3 , X5804BYA Río Cuarto , Argentina
- Instituto para el Desarrollo Agroindustrial y de la Salud (IDAS) , CONICET-UNRC , Agencia Postal # 3 , X5804BYA Río Cuarto , Argentina
| | - R Darío Falcone
- Departamento de Química , Universidad Nacional de Río Cuarto (UNRC) , Agencia Postal # 3 , X5804BYA Río Cuarto , Argentina
- Instituto para el Desarrollo Agroindustrial y de la Salud (IDAS) , CONICET-UNRC , Agencia Postal # 3 , X5804BYA Río Cuarto , Argentina
| | - Manuel López-López
- Departamento de Ingeniería Química, Química Física y Ciencias de Materiales, Centro de Ciencia y Tecnología , Universidad de Huelva , Campus 'El Carmen', Facultad de Ciencias Experimentales , E-21071 Huelva , Spain
| | - M Luisa Moyá
- Departamento de Química Física , Universidad de Sevilla , c/Prof. García González 1 , 41012 Sevilla , Spain
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