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- Title
Direct Observation of Hemithioindigo-Motor Unidirectionality.
- Authors
Huber, Ludwig Alexander; Hoffmann, Kerstin; Thumser, Stefan; Böcher, Niklas; Mayer, Peter; Dube, Henry
- Abstract
Hemithioindigo molecular motors undergo very fast unidirectional rotation upon irradiation with visible light, which has prevented a complete analysis of their working mechanism. In this work, we have considerably slowed down their motion by using a new synthesis for sterically hindered motor derivatives. This method allowed the first observation of all four intermediate states populated during rotation. The exact order in which each isomeric state is formed under irradiation conditions was elucidated using low temperature 1H NMR spectroscopy in conjunction with other analytical methods. At the same time, complete unidirectionality could also be directly shown. Access to slowly rotating hemithioindigo motors opens up a plethora of new applications for visible-light-induced unidirectional motions, especially in areas such as catalysis, smart materials, and supramolecular chemistry.
- Subjects
MOLECULAR motor proteins; ROTATIONAL motion; VISIBLE spectra; INTERMEDIATES (Chemistry); ISOMERS; NUCLEAR magnetic resonance spectroscopy
- Publication
Angewandte Chemie, 2017, Vol 129, Issue 46, p14728
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201708178