title: Surface functionalization of silica by Si-H activation of hydrosilanes.
abstract: Inspired by homogeneous borane catalysts that promote Si-H bond activation, we herein describe an innovative method for surface modification of silica using hydrosilanes as the modification precursor and tris(pentafluorophenyl)borane (B(C6F5)3) as the catalyst. Since the surface modification reaction between surface silanol and hydrosilane is dehydrogenative, progress and termination of the reaction can easily be confirmed by the naked eye. This new metal-free process can be performed at room temperature and requires less than 5 min to complete. Hydrosilanes bearing a range of functional groups, including alcohols and carboxylic acids, have been immobilized by this method. An excellent preservation of delicate functional groups, which are otherwise decomposed in other methods, makes this methodology appealing for versatile applications.
authors.affiliation: Department of Chemistry, Graduate School of Science, Kyoto University , Kitashirakawa, Sakyo-ku, Kyoto 606-8502, Japan.
authors.forename: Nirmalya
authors.initials: N
authors.lastname: Moitra
authors.forename: Shun
authors.initials: S
authors.lastname: Ichii
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Kamei
authors.forename: Kazuyoshi
authors.initials: K
authors.lastname: Kanamori
authors.forename: Yang
authors.initials: Y
authors.lastname: Zhu
authors.forename: Kazuyuki
authors.initials: K
authors.lastname: Takeda
authors.forename: Kazuki
authors.initials: K
authors.lastname: Nakanishi
authors.forename: Toyoshi
authors.initials: T
authors.lastname: Shimada
mesh_terms: D001880:Boranes / Q000737:chemistry; D002384:Catalysis; D015394:Molecular Structure; D012821:Silanes / Q000138:chemical synthesis / Q000737:chemistry*; D012822:Silicon Dioxide / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D001880:Boranes; D012821:Silanes; D012822:Silicon Dioxide