Thermodynamics of micellization of cholic acid based facial amphiphiles carrying three permanent ionic head groups

H.M. Willemen, A.T.M. Marcelis, E.J.R. Sudhölter

Research output: Contribution to journalArticleAcademicpeer-review

15 Citations (Scopus)

Abstract

This paper describes a series of cholic acid based facial amphiphiles carrying three ionic headgroups. Their micellization behavior in water was studied as a function of spacer length and alkyl tail length: both were found to have a small influence on the critical micellization concentration (cmc). Isothermal titration calorimetry was used to gain information on the thermodynamics of micellization. These surfactants show rather normal temperature-dependent behavior: Gibbs energy of micellization is almost constant, cmc increases, and enthalpy of micellization decreases with temperature, and both entropy and enthalpy contribute to the micellization.
Original languageEnglish
Pages (from-to)2588-2591
JournalLangmuir
Volume19
Issue number7
DOIs
Publication statusPublished - 2003

Keywords

  • gram-negative bacteria
  • micelle formation
  • bile-acids
  • derivatives
  • organogelators

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