Self-assembly of fluid-filled KHCO(3) microfibers.
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.
Celio
Hugo
H
Center for Materials Chemistry, Department of Chemistry and Biochemistry, University of Texas at Austin, Austin, TX 78712-1167, USA.
Lozano
Jose
J
Cabibil
Hyacinth
H
Ballast
Lynette
L
White
J M
JM
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
D001639:Bicarbonates; D005561:Formates; D017680:Potassium Compounds; D012833:Siloxanes; C030544:formic acid; C026329:potassium bicarbonate