title: Alkoxy-Terminated Si Surfaces: A New Reactive Platform for the Functionalization and Derivatization of Silicon Quantum Dots.
abstract: Alkoxy-terminated silicon quantum dots (SiQDs) were synthesized via hydrosilylation of aliphatic ketones on hydride-terminated SiQD (H-SiQD) surfaces under microwave-irradiation. Aromatic ketones undergo hydrosilylation on H-SiQD surfaces at room temperature without requiring any catalyst. The alkoxy-terminated SiQDs are soluble in organic solvents, colloidally stable, and show bright and size dependent photoluminescence (PL). The alkoxy-functionalized silicon surfaces were used as reactive platform for further functionalization via unprecedented ligand exchange of the alkoxy-surface groups with alkyl or alkenyl-surface groups in the presence of BH3·THF. Proton nuclear magnetic resonance ((1)H NMR), Fourier transform infrared (FTIR), and X-ray photoelectron spectroscopy (XPS) spectroscopy confirmed alkoxy-terminated surfaces and their ligand exchange reactions in the presence of various alkenes and alkynes.
authors.affiliation: Department of Chemistry, University of Alberta , Edmonton, Alberta T6G 2G2, Canada.
authors.forename: Tapas K
authors.initials: TK
authors.lastname: Purkait
authors.affiliation: Department of Chemistry, University of Alberta , Edmonton, Alberta T6G 2G2, Canada.
authors.forename: Muhammad
authors.initials: M
authors.lastname: Iqbal
authors.affiliation: Department of Chemistry, University of Alberta , Edmonton, Alberta T6G 2G2, Canada.
authors.forename: Muhammad Amirul
authors.initials: MA
authors.lastname: Islam
authors.affiliation: Department of Chemistry, University of Alberta , Edmonton, Alberta T6G 2G2, Canada.
authors.forename: Md Hosnay
authors.initials: MH
authors.lastname: Mobarok
authors.affiliation: Department of Chemistry, University of Alberta , Edmonton, Alberta T6G 2G2, Canada.
authors.forename: Christina M
authors.initials: CM
authors.lastname: Gonzalez
authors.affiliation: Department of Chemistry, University of Alberta , Edmonton, Alberta T6G 2G2, Canada.
authors.forename: Lida
authors.initials: L
authors.lastname: Hadidi
authors.affiliation: Department of Chemistry, University of Alberta , Edmonton, Alberta T6G 2G2, Canada.
authors.forename: Jonathan G C
authors.initials: JG
authors.lastname: Veinot