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Updated: Jul 18, 2026

Microfluidic-based Synthesis of Covalent Organic Frameworks (COFs): A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface
Published on: July 10, 2017
Self-assembly of fluid-filled KHCO(3) microfibers
Hugo Celio1, Jose Lozano, Hyacinth Cabibil
1Center for Materials Chemistry, Department of Chemistry and Biochemistry, University of Texas at Austin, Austin, TX 78712-1167, USA.
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.
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