title: Effect of counterions on the micellization and monolayer behaviour of cationic gemini surfactants.
abstract: The effect of various inorganic and organic counterions on the aggregation behavior of gemini surfactants was examined to investigate the dominant influence of the anions on their micellization and aggregation behavior. This study included eight ethanediyl-α,ω-bis-(dimethylhexadecylammonium) gemini surfactants (GS, also known as 16-2-16) having counterions of chloride (Cl-), bromide (Br-), malate, tartrate, adenosine monophosphate (AMP), guanosine monophosphate (GMP), cytidine monophosphate (CMP), and uridine monophosphate (UMP). Tensiometry, conductivity and Langmuir monolayer measurements were performed to investigate the micellization and surface behaviour of each surfactant.
authors.affiliation: School of Pharmacy, University of Waterloo, 200 University Ave. W., Waterloo ON N2L 3G1, Canada. wettig@uwaterloo.ca.
authors.forename: M S
authors.initials: MS
authors.lastname: Islam
authors.forename: S M
authors.initials: SM
authors.lastname: Shortall
authors.forename: G M
authors.initials: GM
authors.lastname: Mekhail
authors.forename: S P
authors.initials: SP
authors.lastname: Callender
authors.forename: O
authors.initials: O
authors.lastname: Madkhali
authors.forename: Z
authors.initials: Z
authors.lastname: Bharwani
authors.forename: D
authors.initials: D
authors.lastname: Ayyash
authors.forename: K
authors.initials: K
authors.lastname: Kobernyk
authors.forename: S D
authors.initials: SD
authors.lastname: Wettig