Controlling the conductance of molecular junctions using proton transfer reactions: A theoretical model study

Journal article


Publication Details

Author(s): Hofmeister C, Coto PB, Thoss M
Journal: Journal of Chemical Physics
Publication year: 2017
Volume: 146
Journal issue: 9
ISSN: 0021-9606
eISSN: 1089-7690


Abstract

The influence of an intramolecular proton transfer reaction on the conductance of a molecular junction is investigated employing a generic model, which includes the effects of the electric field of the gate and leads electrodes and the coupling to a dissipative environment. Using a quantum master equation approach it is shown that, depending on the localization of the proton, the junction exhibits a high or low current state, which can be controlled by external electric fields. Considering different regimes, which range from weak to strong hydrogen bonds in the proton transfer complex and comprise situations with high and low barriers, necessary preconditions to achieve control are analyzed. The results show that systems with a weak hydrogen bond and a significant energy barrier for the proton transfer can be used as molecular transistors or diodes.


FAU Authors / FAU Editors

Hofmeister, Chriszandro
Lehrstuhl für Theoretische Festkörperphysik
Thoss, Michael Prof. Dr.
Professur für Theoretische Physik mit dem Schwerpunkt Elektronentransport in Molekülen


Additional Organisation
Exzellenz-Cluster Engineering of Advanced Materials


Research Fields

B Nanoelectronic Materials
Exzellenz-Cluster Engineering of Advanced Materials


How to cite

APA:
Hofmeister, C., Coto, P.B., & Thoss, M. (2017). Controlling the conductance of molecular junctions using proton transfer reactions: A theoretical model study. Journal of Chemical Physics, 146(9). https://dx.doi.org/10.1063/1.4974512

MLA:
Hofmeister, Chriszandro, Pedro B. Coto, and Michael Thoss. "Controlling the conductance of molecular junctions using proton transfer reactions: A theoretical model study." Journal of Chemical Physics 146.9 (2017).

BibTeX: 

Last updated on 2019-02-08 at 09:03