title: Room temperature hydrosilylation of silicon nanocrystals with bifunctional terminal alkenes.
abstract: H-terminated Si nanocrystals undergo room temperature hydrosilylation with bifunctional alkenes with distal polar moieties-ethyl ester, methyl ester, or carboxylic acids-without the aid of light or added catalyst. The passivated Si nanocrystals exhibit bright photoluminescence (PL) and disperse in polar solvents, including water. We propose a reaction mechanism in which ester or carboxylic acid groups facilitate direct nucleophilic attack of the highly curved Si surface of the nanocrystals by the alkene.
authors: Department of Chemical Engineering, Texas Materials Institute, and Center for Nano- and Molecular Science and Technology, The University of Texas at Austin, Austin, Texas 78712-1062, United States.
authors: Yixuan
authors: Y
authors: Yu
authors: Colin M
authors: CM
authors: Hessel
authors: Timothy D
authors: TD
authors: Bogart
authors: Matthew G
authors: MG
authors: Panthani
authors: Michael R
authors: MR
authors: Rasch
authors: Brian A
authors: BA
authors: Korgel
mesh_terms: D000475:Alkenes / Q000737:chemistry*; D002264:Carboxylic Acids / Q000737:chemistry; D004952:Esters / Q000737:chemistry; D015394:Molecular Structure; D053758:Nanoparticles / Q000737:chemistry*; D010316:Particle Size; D012825:Silicon / Q000737:chemistry*; D013499:Surface Properties; D013696:Temperature
chemical_list: D000475:Alkenes; D002264:Carboxylic Acids; D004952:Esters; D012825:Silicon