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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.

Authors

G. Ho

J.R. Heath

M. Kondratenko

D.F. Perepichka

K. Arseneault

M. Pezolet



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
Publisher Wiley
Peer Reviewed Peer Reviewed
Volume 11
Issue 10
Pages 2914-2922