The first studies of a tetrathiafulvalene-sigma-acceptor molecular rectifier

Ho, G.; Heath, J.R.; Kondratenko, M.; Perepichka, D.F.; Arseneault, K.; Pezolet, M.; Bryce, M.R.

Abstract

Langmuir-Blodgett monolayers of a donor-acceptor diad TTF-σ-(trinitrofluorene) (8) with an extremely low HOMO-LUMO gap (0.3 eV) have been used to create molecular junction devices that show rectification behavior. By virtue of structural similarities and position of molecular orbitals, 8 is the closest well-studied analogue of the model Aviram-Ratner unimolecular rectifier (TTF-σ-TCNQ). Compressing the monolayer results in aligning the molecules, and is followed by a drastic increase in the rectification ratio. The direction of rectification depends on the electrodes used and is different in n-Si/8/Ti and Au/8/C16H33S-Hg junctions. The molecular nature of such behavior was corroborated by control experiments with fatty acids and by reversing the rectification direction with changing the molecular orientation (Au/D-σ-A versus Au/A-σ-D).

Citation

Ho, G., Heath, J., Kondratenko, M., Perepichka, D., Arseneault, K., Pezolet, M., & Bryce, M. (2005). The first studies of a tetrathiafulvalene-sigma-acceptor molecular rectifier. Chemistry - A European Journal, 11(10), 2914-2922

• Journal Article Type: Article
• Publication Date: 2005-05
• Journal: Chemistry - A European Journal
• Print ISSN: 0947-6539
• Electronic ISSN: 1521-3765
• Publisher: Wiley
• Peer Reviewed: Peer Reviewed
• Volume: 11
• Issue: 10
• Pages: 2914-2922
• Public URL: https://durham-repository.worktribe.com/output/1602110