CUED Publications database

Photo-assisted hydrosilylation of silicon nanoparticles: Dependence of particle size on grafting chemistry

Calder, S and Boies, A and Lei, P and Girshick, S and Roberts, J (2011) Photo-assisted hydrosilylation of silicon nanoparticles: Dependence of particle size on grafting chemistry. Chemistry of Materials, 23. pp. 2917-2921. ISSN 0897-4756

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Abstract

Silicon nanoparticles between 2.5 nm and 30 nm in diameter were functionalized by means of photoassisted hydrosilylation reactions in the aerosol phase with terminal alkenes of varying chain length. Using infrared spectroscopy and nuclear magnetic resonance, the chemical composition of the alkyl layer was determined for each combination of particle size and alkyl chain length. The spectroscopic techniques were used to determine that smaller particles functionalized with short chains in the aerosol phase tend to attach to the interior (β) alkenyl carbon atom, whereas particles >10 nm in diameter exhibit attachment primarily with the exterior (α) alkenyl carbon atom, regardless of chain length. © 2011 American Chemical Society.

Item Type: Article
Uncontrolled Keywords: aerosol FTIR hydrosilylation NMR Silicon nanoparticles
Subjects: UNSPECIFIED
Divisions: Div A > Energy
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 11:30
Last Modified: 08 Dec 2014 02:35
DOI: 10.1021/cm200444n