Title: Photomechanical Effects of Ferroelectric Liquid-Crystalline Elastomers Containing Azobenzene Chromophores

Author: Yanlei Yu, Taketo Maeda, Jun-ichi Mamiya, Tomiki Ikeda*

Journal: Angew. Chem., 2007, 119, 899-901

Abstract：

Ferroelectric liquid-crystalline (LC) elastomer films with a high LC order and low glass transition temperature bend when irradiated with light (see picture). At 366 nm the films bend toward the actinic light source along the alignment direction of the mesogens, and they recover their initial flat state after exposure to visible light. The mechanical force generated by photoirradiation reaches about 220 kPa.

Fulltext Link: https://onlinelibrary.wiley.com/doi/full/10.1002/ange.200603053