Kinetic control of the photochemical reactivity of hydrogen-terminated silicon with bifunctional molecules

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DOIResolve DOI: http://doi.org/10.1021/la0474969
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TypeArticle
Journal titleLangmuir
ISSN0743-7463
Volume21
Issue11
Pages50135018; # of pages: 6
AbstractCarboxy-terminated crystalline silicon surfaces are of fundamental importance for biochip fabrication because of their reactivity toward biological macromolecules. To explore the feasibility of direct attachment of bifunctional molecules (e.g., -alkenoic acids) to hydrogen-terminated silicon crystal (H-Si) via Si-C linkages, we have investigated the photoreactivities of the alkene (-CH=CH2) and carboxy (-COOH) terminal groups of 1-dodecene, undecanoic acid, and undecylenic acid toward H-Si. The alkene terminus was found to react substantially faster than the carboxy terminus under UV irradiation (at 350 nm). By controlling the reaction time, high-quality carboxy-terminated monolayers, comparable to those formed by ester hydrolysis, can be obtained from a direct, one-step photochemical reaction between H-Si and undecylenic acid.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada; NRC Steacie Institute for Molecular Sciences
Peer reviewedNo
Identifier10367391
NPARC number12338284
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Record identifier8adee588-a41e-41d0-af69-df3322b5bba0
Record created2009-09-10
Record modified2016-05-09
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