title: Self-assembly of fluid-filled KHCO(3) microfibers.
abstract: Self-assembly of KHCO(3) fibers is observed when glassy oligomerized films of poly[(aminopropyl)siloxane] containing K(+) ions, denoted K(+)/poly-APS, are exposed to CO(2) and H(2)O. The fibers are crystalline, narrow (0.4-3 microm diam), high aspect ratio (up to at least 300), and, on the basis of Raman spectroscopy, dominated by KHCO(3). The fibers contain fluid that is dominated by aqueous potassium formate (KOOCH). A multistep phenomenological model is proposed to account for the self-assembly.
authors.affiliation: Center for Materials Chemistry, Department of Chemistry and Biochemistry, University of Texas at Austin, Austin, TX 78712-1167, USA.
authors.forename: Hugo
authors.initials: H
authors.lastname: Celio
authors.forename: Jose
authors.initials: J
authors.lastname: Lozano
authors.forename: Hyacinth
authors.initials: H
authors.lastname: Cabibil
authors.forename: Lynette
authors.initials: L
authors.lastname: Ballast
authors.forename: J M
authors.initials: JM
authors.lastname: White
mesh_terms: D001639:Bicarbonates / Q000737:chemistry*; D001709:Biotechnology; D005561:Formates / Q000737:chemistry; D036103:Nanotechnology; D017680:Potassium Compounds / Q000737:chemistry*; D012833:Siloxanes / Q000737:chemistry*; D013059:Spectrum Analysis, Raman
chemical_list: D001639:Bicarbonates; D005561:Formates; D017680:Potassium Compounds; D012833:Siloxanes; C030544:formic acid; C026329:potassium bicarbonate