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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.

SUBMITTER: Yu Y

PROVIDER: S-EPMC3580235 | biostudies-literature | 2013 Feb

REPOSITORIES: biostudies-literature

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Room temperature hydrosilylation of silicon nanocrystals with bifunctional terminal alkenes.

Yu Yixuan Y Hessel Colin M CM Bogart Timothy D TD Panthani Matthew G MG Rasch Michael R MR Korgel Brian A BA

Langmuir : the ACS journal of surfaces and colloids 20130124 5

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 th ...[more]

PMID: 23312033

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