title: Surface-Independent Hierarchical Coatings with Superamphiphobic Properties.
abstract: Facile approaches for the fabrication of substrate independent superamphiphobic surfaces that can repel both water and organic liquids have been limited. The design of such super-repellent surfaces is still a major challenge of surface chemistry and physics. Herein, we describe a simple and efficient dip-coating approach for the fabrication of highly hierarchical surface coatings with superamphiphobic properties for a broad range of materials based on a mussel-inspired dendritic polymer (MI-dPG). The MI-dPG coating process provides a precise roughness control, and the construction of highly hierarchical structures was achieved either directly by pH-controlled aggregation or in combination with nanoparticles (NP). Moreover, the fabrication of coatings with a thickness and roughness gradient was possible via simple adjustment of the depth of the coating solution. Subsequent postmodification of these highly hierarchical structures with fluorinated molecules yielded a surface with superamphiphobic properties that successfully prevented the wetting of liquids with a low surface tension down to about 30 mN/m. The generated superamphiphobic coatings exhibit impressive repellency to water, surfactant containing solutions, and biological liquids, such as human serum, and are flexible on soft substrates.
authors.affiliation: Institut für Chemie und Biochemie, Freie Universität Berlin , Takustrasse 3, 14195 Berlin, Germany.
authors.forename: Christoph
authors.initials: C
authors.lastname: Schlaich
authors.affiliation: Institut für Chemie und Biochemie, Freie Universität Berlin , Takustrasse 3, 14195 Berlin, Germany.
authors.forename: Luis
authors.initials: L
authors.lastname: Cuellar Camacho
authors.affiliation: Institut für Chemie und Biochemie, Freie Universität Berlin , Takustrasse 3, 14195 Berlin, Germany.
authors.forename: Leixiao
authors.initials: L
authors.lastname: Yu
authors.affiliation: Institut für Chemie und Biochemie, Freie Universität Berlin , Takustrasse 3, 14195 Berlin, Germany.
authors.forename: Katharina
authors.initials: K
authors.lastname: Achazi
authors.affiliation: Institut für Chemie und Biochemie, Freie Universität Berlin , Takustrasse 3, 14195 Berlin, Germany.|Department of Cellular Biophysics, Max-Planck Institute for Medical Research , Heisenbergstr. 3, 70569 Stuttgart, Germany.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Wei
authors.affiliation: Institut für Chemie und Biochemie, Freie Universität Berlin , Takustrasse 3, 14195 Berlin, Germany.
authors.forename: Rainer
authors.initials: R
authors.lastname: Haag
keywords: hierarchical coatings; mussel-inspired adhesives; protein-resistant surfaces; self-cleaning; superamphiphobic surfaces