Charge Transport in Photoswitchable Dimethyldihydropyrene-Type Single-Molecule Junctions
Author(s):
Diego Roldan, Veerabhadrarao Kaliginedi, Saioa Cobo, Viliam Kolivoška, Christophe Bucher, Wenjing Hong, Guy Royal, Thomas Wandlowski
Journal:
Journal of the American Chemical Society
Year:
2013
Volume:
135
Pages
5974-5977
DOI:
10.1021/ja401484j
Abstract:
The conductance properties of a photoswitchable dimethyldihydropyrene (DHP) derivative have been investigated for the first time in single-molecule junctions using the mechanically controllable break junction technique. We demonstrate that the reversible structure changes induced by isomerization of a single bispyridine-substituted DHP molecule are correlated with a large drop of the conductance value. We found a very high ON/OFF ratio (>104) and an excellent reversibility of conductance switching.