Selective adsorption of pyridine at isolated reactive sites on Si(100)

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DOIResolve DOI: http://doi.org/10.1021/jp0537658
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TypeArticle
Journal titleThe Journal Of Physical Chemistry B: Condensed Phase
ISSN1520-6106
Volume109
Issue43
Pages2005520059; # of pages: 5
AbstractDative bonding of nitrogen-containing heterocycles offers a strategy for the controlled attachment of aromatic molecules to silicon surfaces. However, while scanning tunneling microscopy shows that pyridine on clean Si(100) initially binds via a dative bonding configuration, slow conversion to a more stable bridging state, destroying the aromaticity, is observed. To restrict adsorption to the dative bonded form, we investigated the interaction of pyridine with isolated reactive sites on partially H-terminated Si(100). While dative bonding on isolated clean dimers is observed, single dangling bonds remain unreacted. This selectivity can be accounted for by the ability of the Si-Si dimers to act as electron acceptors that stabilize the dative bonded species. This observation has important implications for the controlled positioning of single molecules on silicon via dative bonding.
Publication date
PublisherAmerican Chemical Society
LanguageEnglish
AffiliationNational Research Council Canada; NRC Steacie Institute for Molecular Sciences
Peer reviewedYes
Identifier18077705
NPARC number12328626
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Record identifier1d4d70fe-81d6-4ffb-a20c-9802d6c85574
Record created2009-09-10
Record modified2017-03-23
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