Controlling single molecule conductance by a locally induced chemical reaction on individual thiophene units

0539713 - FZÚ 2021 RIV DE eng J - Journal Article
Michnowicz, T. - Borca, B. - Petuya, R. - Schendel, V. - Pristl, M. - Pentegov, I. - Kraft, U. - Klauk, H. - Wahl, P. - Mutombo, Pingo - Jelínek, Pavel - Arnau, A. - Schlickum, U. - Kern, K.
Controlling single molecule conductance by a locally induced chemical reaction on individual thiophene units.
Angewandte Chemie - International Edition. Roč. 59, č. 15 (2020), s. 6207-6212. ISSN 1433-7851. E-ISSN 1521-3773
R&D Projects: GA MŠMT(CZ) EF16_019/0000760
Grant - others:OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institutional support: RVO:68378271
Keywords : DFT * single-molecule conductance * STM * AFM * strong anchoring
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 15.336, year: 2020
Method of publishing: Open access

The parameters affecting the conductance are mainly related to their electronic structure and to the coupling to the metallic electrodes. Here, the experimental and theoretical analyses are focused on single tetracenothiophene molecules and demonstrate that an in‐situ‐induced direct desulfurization reaction of the thiophene moiety strongly improves the molecular anchoring by forming covalent bonds between molecular carbon and copper surface atoms. This bond formation leads to an increase of the conductance by about 50% compared to the initial state.
Permanent Link: http://hdl.handle.net/11104/0317425