title: Self-assembly of a triangle-shaped, hexaplatinum-incorporated, supramolecular amphiphile in solution and at interfaces.
abstract: The self-assembly and characterization of a novel supramolecular amphiphile built from a new 60 degree amphiphilic precursor that incorporates hydrophilic platinum(II) metals and hydrophobic dioctadecyloxy chains is reported. The amphiphilic macrocycle and its precursor compound have been characterized by multinuclear NMR spectroscopy, ESI-MS, and other standard techniques. The coacervate morphology of the amphiphile at the liquid-liquid interface has been studied by using confocal optical microscopy and in situ Raman spectroscopy. The self-assembly of the amphiphilic macrocycle at the air-water interface has been investigated through Langmuir-trough techniques. The study indicates the possible formation of surface micelle-like aggregates. The disparity between the experimental molecular areas and those derived from molecular models support the idea of aggregation. AFM images of the surface aggregates show the formation of a flat topology with arbitrary ridgelike patterns. Reasonable molecular-packing arrangements are proposed to explain the molecular organization within the observed structures.
authors: Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112 (USA), Fax: (+1) 801-581-8433.
authors: Umamageswaran
authors: U
authors: Maran
authors: Department of Biological Engineering, Utah State University, Utah 84322 (USA).
authors: David
authors: D
authors: Britt
authors: Department of Bioengineering, University of Utah, Utah 84112 (USA).
authors: Christopher B
authors: CB
authors: Fox
authors: Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112 (USA), Fax: (+1) 801-581-8433.|Department of Bioengineering, University of Utah, Utah 84112 (USA).
authors: Joel M
authors: JM
authors: Harris
authors: Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112 (USA), Fax: (+1) 801-581-8433.|Centre for High Performance Computing, University of Utah, Utah 84112 (USA).
authors: Anita M
authors: AM
authors: Orendt
authors: Department of Physics and Astronomy, Brigham Young University, Utah 84602 (USA).
authors: Hiram
authors: H
authors: Conley
authors: Department of Physics and Astronomy, Brigham Young University, Utah 84602 (USA).
authors: Robert
authors: R
authors: Davis
authors: Department of Bioengineering, University of Utah, Utah 84112 (USA).
authors: Vladamir
authors: V
authors: Hlady
authors: Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112 (USA), Fax: (+1) 801-581-8433.
authors: Peter J
authors: PJ
authors: Stang
mesh_terms: D009682:Magnetic Resonance Spectroscopy; D008823:Micelles; D008958:Models, Molecular; D036103:Nanotechnology; D009944:Organoplatinum Compounds / Q000737:chemistry*; D010616:Phenanthrenes / Q000737:chemistry*; D011809:Quinones / Q000737:chemistry*; D013499:Surface Properties
chemical_list: C545035:3,6-dibromophenanthrene-9,10-quinone; D008823:Micelles; D009944:Organoplatinum Compounds; D010616:Phenanthrenes; D011809:Quinones