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Langmuir. 2008 Aug 19;24(16):9096-101. doi: 10.1021/la801165b. Epub 2008 Jul 16.

Electroactive self-assembled monolayers on gold via bipodal dithiazepane anchoring groups.

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1
Ohmx Corporation, Evanston, Illinois 60201, USA. paul@ohmx.com

Abstract

Novel dithiazepane-functionalized ferrocenyl-phenylethynyl oligomers 1 and 2 have been synthesized. Self-assembled monolayers (SAMs) of these ferrocene derivatives have been studied by X-ray photoelectron spectroscopy, ellipsometry, and cyclic voltammetry. It has been shown by XPS that monolayers of the dithiazepane-anchored molecules on gold electrodes contain gold-thiolate species. Cyclic voltammetry of the SAMs were characteristic of stable electroactive monolayers even for single-component SAMs of 1 and 2, with the more ideal responses recorded for the two-component SAMs diluted with undecanethiol. The small variation in peak splittings at progressively higher scan rates in these SAMs makes dithiazepane-bridged redox species promising candidates for further studies on molecular wires with bipodal anchoring.

PMID:
18627193
DOI:
10.1021/la801165b
[Indexed for MEDLINE]
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