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Charge Transport in Photoswitchable Dimethyldihydropyrene-Type Single-Molecule Junctions
- Roldan, Diego, Kaliginedi, Veerabhadrarao, Cobo, Saioa, Kolivoska, Viliam, Bucher, Christophe, Hong, Wenjing, Royal, Guy, Wandlowski, Thomas
- Journal of the American Chemical Society 2013 v.135 no.16 pp. 5974-5977
- chemical structure, isomerization, pyrene (hydrocarbon)
- 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.