title: Instantaneous Functionalization of Chemically Etched Silicon Nanocrystal Surfaces.
abstract: Remarkable advances in surface hydrosilylation reactions of C=C and C=O bonds on hydride-terminated silicon have revolutionized silicon surface functionalization. However, existing methods for functionalizing hydride-terminated Si nanocrystals (H-SiNCs) require long reaction times and elevated temperatures. Herein, we report a room-temperature method for functionalizing H-SiNC surfaces within seconds by stripping outermost atoms on H-SiNC surfaces with xenon difluoride (XeF2). Detailed analysis of the reaction byproducts by in situ NMR spectroscopy and GC-MS provided unprecedented insight into NC surface composition and reactivity as well as the complex reaction mechanism of XeF2activated hydrosilylation.
authors.affiliation: Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton, Alberta, T6G 2G2, Canada.
authors.forename: Md Hosnay
authors.initials: MH
authors.lastname: Mobarok
authors.affiliation: Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton, Alberta, T6G 2G2, Canada.
authors.forename: Tapas K
authors.initials: TK
authors.lastname: Purkait
authors.affiliation: Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton, Alberta, T6G 2G2, Canada.
authors.forename: Muhammad Amirul
authors.initials: MA
authors.lastname: Islam
authors.affiliation: Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton, Alberta, T6G 2G2, Canada.
authors.forename: Mark
authors.initials: M
authors.lastname: Miskolzie
authors.affiliation: Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton, Alberta, T6G 2G2, Canada.
authors.forename: Jonathan G C
authors.initials: JGC
authors.lastname: Veinot
keywords: NMR spectroscopy; functionalization; nanocrystals; silicon; xenon difluoride