Inelastic electron tunneling spectroscopy of difurylethene-based photochromic single-molecule junctions
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Diarylethene-derived molecules alter their electronic structure upon transformation between the open and closed forms of the diarylethene core, when exposed to ultraviolet (UV) or visible light. This transformation results in a significant variation of electrical conductance and vibrational properties of corresponding molecular junctions. We report here a combined experimental and theoretical analysis of charge transport through diarylethene-derived single-molecule devices, which are created using the mechanically controlled break-junction technique. Inelastic electron tunneling (IET) spectroscopy measurements performed at 4.2 K are compared with first-principles calculations in the two distinct forms of diarylethenes connected to gold electrodes. The combined approach clearly demonstrates that the IET spectra of single-molecule junctions show specific vibrational features that can be used to identify different isomeric molecular states by transport experiments.
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KIM, Youngsang, Safa G. BAHOOSH, Dmytro SYSOIEV, Thomas HUHN, Fabian PAULY, Elke SCHEER, 2017. Inelastic electron tunneling spectroscopy of difurylethene-based photochromic single-molecule junctions. In: Beilstein journal of nanotechnology. 2017, 8, pp. 2606-2614. eISSN 2190-4286. Available under: doi: 10.3762/bjnano.8.261BibTex
@article{Kim2017Inela-41042, year={2017}, doi={10.3762/bjnano.8.261}, title={Inelastic electron tunneling spectroscopy of difurylethene-based photochromic single-molecule junctions}, volume={8}, journal={Beilstein journal of nanotechnology}, pages={2606--2614}, author={Kim, Youngsang and Bahoosh, Safa G. and Sysoiev, Dmytro and Huhn, Thomas and Pauly, Fabian and Scheer, Elke} }
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