Regensburg 2016 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 75: Transport: Molecular Electronics and Photonics 2
(Joint session of CPP, DS, HL, MA, O and TT organized by TT)
TT 75.3: Vortrag
Donnerstag, 10. März 2016, 15:30–15:45, H23
Design rules for molecular electronics: Diarylethene molecules und derivatives — •Lokamani Lokamani1, Torsten Sendler1, Peter Zahn1, Sibylle Gemming1,2, and Artur Erbe1 — 1Helmholtz-Zentrum Dresden-Rossendorf e.V., 01314 Dresden, Germany. — 2Instiute of Physics, Technische Universität, 09107 Chemnitz, Germany.
Diarylethenes, a class of photosensitive molecules which exhibit photochoromism, can be switched between open- and closed-ring isomers. In break-junction experiments diarylethene derivatives[1] in open and closed-ring forms can be distinguished by a low and high conductance state respectively with a difference in current levels of about one order of magnitude. In addition, these molecules exhibit stable electrical characteristics in both conductance states.
Here, we study the electronic transport properties of such derivatives at the level of single molecules. In particular, we analyze the effect of various electron accepting and donating groups on the conductance properties of single molecules attached to gold electrodes. We explore the underlying design rules for molecular electronics comparing break-junction experiments and the theoretical investigations on diarylethene molecules and derivatives.
T. Sendler et al., Advanced Science 2, 1500017 (2015)