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Updated: Feb 3, 2026
08:40
Light-driven Molecular Motors on Surfaces for Single Molecular Imaging
Published on: March 13, 2019
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A hemithioindigo molecular motor for metal surface attachment
Kerstin Hoffmann1, Peter Mayer, Henry Dube
1Ludwig-Maximilians-Universität München, Department für Chemie and Munich Center for Integrated Protein Science CIPSM, D-81377 Munich, Germany. henry.dube@cup.lmu.de.
Organic & Biomolecular Chemistry
|November 1, 2018
Summary
Researchers synthesized a novel hemithioindigo molecular motor with thioether feet for surface attachment. This functionalized motor retains its visible-light-driven unidirectional rotation capabilities, demonstrating successful surface integration without compromising performance.
Area of Science:
- Surface chemistry
- Molecular engineering
- Supramolecular chemistry
Background:
- Responsive molecular entities on surfaces enable organized molecular functions and emergent properties.
- Molecular motors are crucial for nanoscale mechanical applications.
Purpose of the Study:
- To synthesize a hemithioindigo molecular motor functionalized for surface attachment.
- To investigate the impact of surface-anchoring groups on motor performance in solution.
Main Methods:
- Synthesis of a hemithioindigo derivative with thioether "feet" for surface anchoring.
- Theoretical calculations of the ground state energy profile.
- Experimental evaluation of visible light-driven unidirectional rotation in solution.
Main Results:
- Successful synthesis of the hemithioindigo molecular motor with thioether feet.
- Theoretical analysis confirmed the motor's energy landscape.
- Experimental data showed the motor operates effectively in solution, maintaining high speed and unidirectionality.
Conclusions:
- The designed hemithioindigo molecular motor is fully operative after surface functionalization.
- Surface attachment does not impede the motor's rotational speed or unidirectionality.
- This work paves the way for surface-immobilized molecular machines.
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