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