Remotely controlled isomer selective molecular switching
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Nonlocal addressing—the “remote control”—of molecular switches promises more efficient processing for information technology, where fast speed of switching is essential. The surface state of the (111) facets of noble metals, a confined two-dimensional electron gas, provides a medium that enables transport of signals over large distances and hence can be used to address an entire ensemble of molecules simultaneously with a single stimulus. In this study we employ this characteristic to trigger a conformational switch in anthradithiophene (ADT) molecules by injection of hot carriers from a scanning tunneling microscope (STM) tip into the surface state of Cu(111). The carriers propagate laterally and trigger the switch in molecules at distances as far as 100 nm from the tip location. The switching process is shown to be long-ranged, fully reversible, and isomer selective, discriminating between cis and trans diastereomers, enabling maximum control.
Schendel , V , Borca , B , Pentegov , I , Michnowicz , T , Kraft , U , Klauk , H , Wahl , P , Schlickum , U & Kern , K 2016 , ' Remotely controlled isomer selective molecular switching ' Nano Letters , vol 16 , no. 1 , pp. 93-97 . DOI: 10.1021/acs.nanolett.5b02974
Copyright © 2015 American Chemical Society. This work is made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://dx.doi.org/10.1021/acs.nanolett.5b02974
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