A helical naphthopyran dopant for photoresponsive cholesteric liquid crystals

Yuna Kim (1) , Michel Frigoli (2) , Nicolas Vanthuyne (3) , Nobuyuki Tamaoki (1)

1 RIES - Research Institute for Electronic Science
2 ILV - Institut Lavoisier de Versailles
3 ISM2 - Institut des Sciences Moléculaires de Marseille

The first photoresponsive cholesteric liquid crystal comprising a photoisomerizable helical naphthopyran derivative dopant and a nematic liquid crystal is reported. An unprecedented helical twisting power switching ratio of over 90% allowed us to demonstrate multi-cycle rotational motion of micro-objects by UV light irradiation.

Domaines: Autre

Yuna Kim, Michel Frigoli, Nicolas Vanthuyne, Nobuyuki Tamaoki. A helical naphthopyran dopant for photoresponsive cholesteric liquid crystals. Chemical Communications, 2017, 53 (1), pp.200-203. ⟨10.1039/c6cc08667e⟩. ⟨hal-01683222⟩