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Effect of Counterions on the Shape, Hydration, and Degree of Order at the Interface of Cationic Micelles: The Triflate Case

Lima, Filipe S. ; Cuccovia, Iolanda M. ; Horinek, Dominik ; Amaral, Lia Q. ; Riske, Karin A. ; Schreier, Shirley ; Salinas, Roberto K. ; Bastos, Erick L. ; Pires, Paulo A. R. ; Bozelli, José Carlos ; Favaro, Denize C. ; Rodrigues, Ana Clara B. ; Dias, Luís Gustavo ; El Seoud, Omar A. ; Chaimovich, Hernan



Abstract

Specific ion effects in surfactant solutions affect the properties of micelles. Dodecyltrimethylammonium chloride (DTAC), bromide (DTAB), and methanesulfonate (DTAMs) micelles are typically spherical, but some organic anions can induce shape or phase transitions in DTA(+) micelles. Above a defined concentration, sodium triflate (NaTf induces a phase separation in dodecyltrimethylammonium triflate ...

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