Article Dans Une Revue Journal of Physical Chemistry Letters Année : 2020

Transmitting Stepwise Rotation among Three Molecule-Gear on the Au(111) Surface

Résumé

The realization of a train of molecule-gears working under the tip of a scanning tunneling microscope (STM) requires a stable anchor of each molecule to the metal surface. Such an anchor can be promoted by a radical state of the molecule induced by a dissociation reaction. Our results, rationalized by density functional theory calculations, reveal that such an open radical state at the core of star-shaped pentaphenylcyclopentadiene (PPCP) favors anchoring. Furthermore, to allow the transmission of motion by STM manipulation, the molecule-gears should be equipped with specific groups facilitating the tip–molecule interactions. In our case, a tert-butyl group positioned at one tooth end of the gear benefits both the tip-induced manipulation and the monitoring of rotation. With this optimized molecule, we achieve reproducible and stepwise rotations of the single gears and transmit rotations for up to three interlocked units.

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Dates et versions

hal-04636143 , version 1 (24-11-2020)
hal-04636143 , version 2 (05-07-2024)

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Kwan Ho Au Yeung, Tim Kühne, Frank Eisenhut, Michael Kleinwächter, Yohan Gisbert, et al.. Transmitting Stepwise Rotation among Three Molecule-Gear on the Au(111) Surface. Journal of Physical Chemistry Letters, 2020, 11 (16), pp.6892-6899. ⟨10.1021/acs.jpclett.0c01747⟩. ⟨hal-04636143v2⟩
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