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Photomechanical Effects of Ferroelectric Liquid‐Crystalline Elastomers Containing Azobenzene Chromophores
Author(s) -
Yu Yanlei,
Maeda Taketo,
Mamiya Junichi,
Ikeda Tomiki
Publication year - 2007
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200603053
Subject(s) - azobenzene , elastomer , ferroelectricity , chromophore , bending , liquid crystalline , materials science , liquid crystal , irradiation , optoelectronics , optics , composite material , photochemistry , chemistry , polymer , physics , nuclear physics , dielectric
Bending over backwards : 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.