Self-assembled monolayers formed using zero net curvature norbornylogous bridges: The influence of potential on molecular orientation
MetadataShow full item record
A new class of electroactive norbornylogous bridges, with no net curvature, that form self-assembled monolayers on gold electrodes were studied by electrochemistry and in situ infrared spectroscopy. The influence of the electrode potential on the structure and conformation of the self-assembled monolayers (SAMs) was investigated. This was performed using two different lengths of rigid norbornylogous bridges with terminal ferrocene moieties and ?-hydroxyalkanethiols. It was found that single component monolayers of the rigid norbornylogous bridges changed their tilt angle with their transition from the ferrocene to ferricinium. However, when the norbornylogous SAMs were diluted with?-hydroxyalkanethiols the tilt angle remained unchanged upon oxidation of ferrocene to ferricinium. It was also observed that the tilt angle of the diluent, ?-hydroxyalkanethiols changed at potentials exceeding 500 mV. © 2010 American Chemical Society.
Showing items related by title, author, creator and subject.
Electroactive self-assembled monolayers of unique geometric structures by using rigid norbornylogous bridgesDarwish, Nadim; Eggers, P.; Dasilva, P.; Zhang, Y.; Tong, Y.; Ye, S.; Gooding, J.; Paddon-Row, M. (2012)Herein, we describe the synthesis of straight (S) and L-shaped (L) norbornylogous bridges (NBs) with an anthraquinone moiety at the distal end as the redox-active head group and two thiol feet at the proximal end, by which ...
Surface-bound norbornylogous bridges as molecular rulers for investigating interfacial electrochemistry and as single molecule switchesDarwish, Nadim; Paddon-Row, M.; Gooding, J. (2014)Electron transfer (ET) reactions through molecules attached to surfaces, whether they are through single molecules or ensembles, are the subject of much research in molecular electronics, bioelectronics, and electrochemistry. ...
Single molecular switches: Electrochemical gating of a single anthraquinone-based norbornylogous bridge moleculeDarwish, Nadim; Díez-Pérez, I.; Guo, S.; Tao, N.; Gooding, J.; Paddon-Row, M. (2012)Herein we report the electrochemical gating of a single anthraquinone-based molecule bridged between two gold electrodes using the STM break-junction technique. Once a molecule is trapped between the STM gold tip and the ...