Light-driven supramolecular chiral materials: photoinduced control of liquid-crystalline helical structures and non-destructive erasable molecular memory for photonic applications

Masuki Kawamoto; Natsuki Shiga; Kazuto Takaishi; Takafumi Sassa; Takashi Yamashita; Yoshihiro Ito

doi:10.1117/12.2021602

12 September 2013 Light-driven supramolecular chiral materials: photoinduced control of liquid-crystalline helical structures and non-destructive erasable molecular memory for photonic applications

Masuki Kawamoto, Natsuki Shiga, Kazuto Takaishi, Takafumi Sassa, Takashi Yamashita, Yoshihiro Ito

Author Affiliations +

Proceedings Volume 8828, Liquid Crystals XVII; 882803 (2013) https://doi.org/10.1117/12.2021602
Event: SPIE Organic Photonics + Electronics, 2013, San Diego, California, United States

Abstract

Light-driven supramolecular chiral materials containing an azobenzene moiety as a photoresponsive part and binaphthyl moiety as a chiral part were designed. We found that the dynamic molecular twisting motion of the binaphthyl moiety could be achieved by irradiation of UV or visible light to cause photoisomerization of the azobenzene moiety. The twisting motion induced by the photochromic reaction gave rise to large change in the molecular structure and the value of optical rotation. The chiral materials were demonstrated to behave uniquely as photomodulation of liquid-crystalline helical structures and non-destructive erasable chiroptical memory through photoinduced switching of the dihedral angle of the binaphthyl moiety.

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Masuki Kawamoto, Natsuki Shiga, Kazuto Takaishi, Takafumi Sassa, Takashi Yamashita, and Yoshihiro Ito "Light-driven supramolecular chiral materials: photoinduced control of liquid-crystalline helical structures and non-destructive erasable molecular memory for photonic applications", Proc. SPIE 8828, Liquid Crystals XVII, 882803 (12 September 2013); https://doi.org/10.1117/12.2021602

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