Charge Transport in Photoswitchable Dimethyldihydropyrene-Type Single-Molecule Junctions

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• 作者：Diego Roldan ; Veerabhadrarao Kaliginedi ; Saioa Cobo ; Viliam Kolivoska ; Christophe Bucher ; Wenjing Hong ; Guy Royal ; Thomas Wandlowski
• 刊名：The Journal of the American Chemical Society
• 出版年：2013
• 出版时间：April 24, 2013
• 年：2013
• 卷：135
• 期：16
• 页码：5974-5977
• 全文大小：275K
• 年卷期：v.135,no.16(April 24, 2013)
• ISSN：1520-5126

文摘

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.