Potential-Directed Assembly of Aryl Iodonium Salts onto Silicon {100} Hydride Terminated and Platinum Surfaces

A novel electrograft method of forming covalent bonds directly to silicon hydride or platinum surfaces has been demonstrated with the use of iodonium salt precursors. Initially, a silicon substrate is treated with a dilute hydrofluoric acid wash to ensure a hydride-passivated surface, which is immer...

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Bibliographic Details
Published in:	Langmuir Vol. 21; no. 24; pp. 10899 - 10901
Main Authors:	Dirk, Shawn M, Pylypenko, Svitlana, Howell, Stephen W, Fulghum, Julia E, Wheeler, David R
Format:	Journal Article
Language:	English
Published:	Washington, DC American Chemical Society 22-11-2005
Subjects:	Chemistry Exact sciences and technology General and physical chemistry Silanes Substrate Nitrile Platinum Acetonitrile Hydrofluoric acid Covalent bond Transition metal Aryl Potential Grafting Precursor
Online Access:	Get full text
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Summary:	A novel electrograft method of forming covalent bonds directly to silicon hydride or platinum surfaces has been demonstrated with the use of iodonium salt precursors. Initially, a silicon substrate is treated with a dilute hydrofluoric acid wash to ensure a hydride-passivated surface, which is immersed in a solution of iodonium salt dissolved in a solution of tetrabutylammonium tetrafluoroborate in acetonitrile. Grafting is accomplished by applying a negative bias to the silicon substrate. Directed assembly has been demonstrated with Pt substrates.
Bibliography:	ark:/67375/TPS-PD2LD328-4 istex:867A7DD2925C25271D43DC9F570CA165278C67C1 SourceType-Other Sources-1 content type line 63 ObjectType-Correspondence-1
ISSN:	0743-7463 1520-5827
DOI:	10.1021/la052311z