Light-driven molecular switch for reconfigurable spin filters

Masayuki Suda (), Yuranan Thathong, Vinich Promarak, Hirotaka Kojima, Masakazu Nakamura, Takafumi Shiraogawa, Masahiro Ehara and Hiroshi M. Yamamoto ()
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Masayuki Suda: Myodaiji
Yuranan Thathong: Suranaree University of Technology
Vinich Promarak: Suranaree University of Technology
Hirotaka Kojima: Nara Institute of Science and Technology
Masakazu Nakamura: Myodaiji
Takafumi Shiraogawa: Myodaiji
Masahiro Ehara: Myodaiji
Hiroshi M. Yamamoto: Myodaiji

Nature Communications, 2019, vol. 10, issue 1, 1-7

Abstract: Abstract Artificial molecular switches and machines that enable the directional movements of molecular components by external stimuli have undergone rapid advances over the past several decades. Particularly, overcrowded alkene-based artificial molecular motors are highly attractive from the viewpoint of chirality switching during rotational steps. However, the integration of these molecular switches into solid-state devices is still challenging. Herein, we present an example of a solid-state spin-filtering device that can switch the spin polarization direction by light irradiation or thermal treatment. This device utilizes the chirality inversion of molecular motors as a light-driven reconfigurable spin filter owing to the chiral-induced spin selectivity effect. Through this device, we found that the flexibility at the molecular scale is essential for the electrodes in solid-state devices using molecular machines. The present results are beneficial to the development of solid-state functionalities emerging from nanosized motions of molecular switches.

Date: 2019
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DOI: 10.1038/s41467-019-10423-6

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