title: Mixed monolayers of alkylated azacrown ethers and palmitic acid at the air-water surface.
abstract: The Langmuir films of two alkylated azacrown ethers at the air-water surface were characterized using surface pressure-area isotherms, ellipsometry, Brewster angle microscopy, and constant-area surface pressure relaxation. The azacrown ether molecules aggregate in the monolayer, which significantly stabilizes the film against dissolution. Mixed azacrown ether-palmitic acid monolayers were also characterized; results suggest that at high compression the two molecules interact repulsively. The influence of Cu(II) ions present in the aqueous subphase on the single components and mixed monolayer characteristics was also studied.
authors.affiliation: Analytical and Biophysical Environmental Chemistry (CABE), Department of Analytical, Inorganic and Applied Chemistry, University of Geneva, Sciences II, 30 quai Ernest Ansermet, CH-1211 Genève 4, Switzerland.
authors.forename: Kamil
authors.initials: K
authors.lastname: Wojciechowski
authors.forename: Dmitry
authors.initials: D
authors.lastname: Grigoriev
authors.forename: Riccardo
authors.initials: R
authors.lastname: Ferdani
authors.forename: George W
authors.initials: GW
authors.lastname: Gokel
mesh_terms: D002413:Cations, Divalent / Q000737:chemistry; D003300:Copper / Q000737:chemistry*; D043844:Crown Ethers / Q000737:chemistry*; D019308:Palmitic Acid / Q000737:chemistry*; D044367:Phase Transition
chemical_list: D002413:Cations, Divalent; D043844:Crown Ethers; D019308:Palmitic Acid; D003300:Copper