Chemie

Organometallic Molecular Junctions Towards Functional Single-Molecule Devices

Wann
Donnerstag, 7. September 2023
15:15 bis 17:30 Uhr

Wo
Universität Konstanz, L 602

Veranstaltet von
R. Winter

Vortragende Person/Vortragende Personen:
Prof. Dr. Yuya Tanaka, Tokyo Institute of Technology, Japan

Organometallic Molecular Junctions
Towards Functional Single-Molecule Devices

Yuya Tanaka

Laboratory for Chemistry and Life Science, Institute of Innovative Research,
Tokyo Instituteof Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226–8503, Japan

Email: ytanaka@res.titech.ac.jp

Molecular devices hold promise for displaying interesting functions and physical properties by taking advantage of the structural diversity of organic molecules. In general, common organic molecular wires show high contact resistance and large attenuation factors. This presentation will discuss our recent efforts in the the single-molecule conductance study of organometallic molecular wires with metal acetylide units. Employing the STM break-junction method, we observed high single-molecule conductance of the metal acetylide molecular wires as compared to the related organic oligoyne molecular wires. Furthermore, the terminal covalent metal electrode-acetylide bonding also enhances carrier transport properties. We also present further efforts towards, such as, developing long-range molecular wires, establishing robust metal-molecule interfaces, designing molecular switches, and exploring thermoelectric properties.

Key references

  1. Sugimoto, K.; Tanaka, Y.; Akita, M et al. Chem. Commun. 2016, 52, 5796.
  2. Tanaka, Y.; Kiguchi, M.; Akita, M. Chem. Eur. J. 2017, 23, 4741.
  3. Tanaka, Y.; Kato, Y.; Tada, T.; Fujii, S.; Kiguchi, M.; Akita, M. J. Am. Chem. Soc. 2018, 140, 10080.
  4. Tanaka, Y.; Kato, Y.; Sugimoto, K.; Kawano, R.; Akita, M. et al. Chem. Sci. 2021, 12, 4338.
  5. Ogawa, S.; Chattopadhyay, S.; Tanaka, Akita, M et al. Chem. Sci. 2021, 12, 10871.
  6. Tanaka, Y.; Morozumi, N.; Akita, M. et al. ChemRxiv 2022, (DOI: 10.26434/chemrxiv-2022-xfrpb).
  7. Park, S.; Jang, J.; Tanaka, Y.; Yoon, H. J. Nano Lett. 2022, 22, 9693.
  8. Tanaka, Y.; Bae, Y.; Kaneko, K.; Akita, M. et al. Adv. Mater. Interfaces 2023, 10, 2202464.
  9. Tanaka, Y. Chem. Eur. J. 2023, 29, e202300472.

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