title: Reactive superhydrophobic surface and its photoinduced disulfide-ene and thiol-ene (bio)functionalization.
abstract: Reactive superhydrophobic surfaces are highly promising for biotechnological, analytical, sensor, or diagnostic applications but are difficult to realize due to their chemical inertness. In this communication, we report on a photoactive, inscribable, nonwettable, and transparent surface (PAINTS), prepared by polycondensation of trichlorovinylsilane to form thin transparent reactive porous nanofilament on a solid substrate. The PAINTS shows superhydrophobicity and can be conveniently functionalized with the photoclick thiol-ene reaction. In addition, we show for the first time that the PAINTS bearing vinyl groups can be easily modified with disulfides under UV irradiation. The effect of superhydrophobicity of PAINTS on the formation of high-resolution surface patterns has been investigated. The developed reactive superhydrophobic coating can find applications for surface biofunctionalization using abundant thiol or disulfide bearing biomolecules, such as peptides, proteins, or antibodies.
authors.affiliation: Institute of Toxicology and Genetics (ITG), Karlsruhe Institute of Technology , 76021 Karlsruhe, Germany.
authors.forename: Junsheng
authors.initials: J
authors.lastname: Li
authors.forename: Linxian
authors.initials: L
authors.lastname: Li
authors.forename: Xin
authors.initials: X
authors.lastname: Du
authors.forename: Wenqian
authors.initials: W
authors.lastname: Feng
authors.forename: Alexander
authors.initials: A
authors.lastname: Welle
authors.forename: Oliver
authors.initials: O
authors.lastname: Trapp
authors.forename: Michael
authors.initials: M
authors.lastname: Grunze
authors.forename: Michael
authors.initials: M
authors.lastname: Hirtz
authors.forename: Pavel A
authors.initials: PA
authors.lastname: Levkin
mesh_terms: D004220:Disulfides / Q000737:chemistry*; D057927:Hydrophobic and Hydrophilic Interactions; D049329:Nanostructures / Q000191:economics*; D012821:Silanes / Q000737:chemistry*; D013438:Sulfhydryl Compounds / Q000737:chemistry*; D014753:Vinyl Compounds / Q000737:chemistry*
chemical_list: D004220:Disulfides; D012821:Silanes; D013438:Sulfhydryl Compounds; D014753:Vinyl Compounds; C485984:trichlorovinylsilane
keywords: Superhydrophobic surface; biofunctionalization; photo click chemistry; surface patterning; transparent