title: Electroactive self-assembled monolayers on gold via bipodal dithiazepane anchoring groups.
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.
authors.affiliation: Ohmx Corporation, Evanston, Illinois 60201, USA. paul@ohmx.com
authors.forename: Paul A
authors.initials: PA
authors.lastname: Bertin
authors.forename: Dimitra
authors.initials: D
authors.lastname: Georganopoulou
authors.forename: Taiyang
authors.initials: T
authors.lastname: Liang
authors.forename: Amanda L
authors.initials: AL
authors.lastname: Eckermann
authors.forename: Markus
authors.initials: M
authors.lastname: Wunder
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Ahrens
authors.forename: Gary F
authors.initials: GF
authors.lastname: Blackburn
authors.forename: Thomas J
authors.initials: TJ
authors.lastname: Meade
mesh_terms: D018360:Crystallography, X-Ray; D004563:Electrochemistry; D006046:Gold / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure; D013846:Thiepins / Q000737:chemistry*
chemical_list: D013846:Thiepins; D006046:Gold