title: Rapid, metal-free hydrosilanisation chemistry for porous silicon surface modification.
abstract: Here, we report a novel surface modification for porous silicon (pSi). Hydroxyl-terminated pSi surfaces are modified with a hydrosilane via Si-H activation using the Lewis acid catalyst tris(pentafluorophenyl) borane. This surface reaction is fast and efficient at room temperature, and leads to a surface stabilised against hydrolytic attack in aqueous media. The resulting surface shows promise as a substrate for surface-assisted laser desorption/ionisation mass spectrometry.
authors.affiliation: ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Mawson Institute, University of South Australia, Australia. nico.voelcker@unisa.edu.au.
authors.forename: M J
authors.initials: MJ
authors.lastname: Sweetman
authors.forename: S J P
authors.initials: SJ
authors.lastname: McInnes
authors.forename: R B
authors.initials: RB
authors.lastname: Vasani
authors.forename: T
authors.initials: T
authors.lastname: Guinan
authors.forename: A
authors.initials: A
authors.lastname: Blencowe
authors.forename: N H
authors.initials: NH
authors.lastname: Voelcker
mesh_terms: D001880:Boranes / Q000737:chemistry; D002384:Catalysis; D058116:Lewis Acids / Q000737:chemistry; D008670:Metals / Q000737:chemistry; D016062:Porosity; D012821:Silanes / Q000737:chemistry*; D012825:Silicon / Q000737:chemistry*; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization; D013499:Surface Properties; D013696:Temperature; D014867:Water / Q000737:chemistry
chemical_list: D001880:Boranes; D058116:Lewis Acids; D008670:Metals; D012821:Silanes; D014867:Water; D012825:Silicon