Charge transport through perylene bisimide molecular junctions: An electrochemical approach. Issue 11 (23rd September 2013)

• Record Type: Journal Article
• Authors: Li, Chen; Stepanenko, Vladimir; Lin, Mei‐Jin; Hong, Wenjing; Würthner, Frank; Wandlowski, Thomas; Frauenheim, Thomas; Niehaus, Thomas; Repp, Jascha; Richter, Klaus; Weber, Heiko
• Is Part Of: Physica status solidi. Volume 250:Issue 11(2013:Nov.)
• Page Start: 2458
• Page End: 2467
• Publication Date: 2013-09-23
• Subjects: Solid state physics -- Periodicals; Solids -- Periodicals; Atomic structure -- Periodicals; 530.41
• DOI: 10.1002/pssb.201350034
• Languages: English
• ISSNs: 0370-1972

Abstract

<abstract abstract-type="main" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <sec id="pssb201350034-sec-0001" sec-type="section"> <p>Single molecular junction conductances of a family of five symmetric and two unsymmetric perylene tetracarboxylic bisimides (PBI) with variable bay‐area substituents were studied employing a scanning tunneling microscope (STM)‐based break junction technique. The stretching experiments provide clear evidence for the formation of single molecular junctions and π–π stacked dimers. Electrolyte gating demonstrates a distinct gating effect in symmetric molecular junctions, which strongly depends on molecular structure and properties of the solvent/electrolyte. Weak π–π‐coupling in the unsymmetric dimers prevents rectification. <inline-graphic xlink:href="ark:/27927/pgg3v1br380" content-type="pssb201350034-gra-0001" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></p> </sec> </abstract>