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Issue 38, 2009
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Photochromic 3-dimensional actuator based on an uncrosslinked liquid crystal elastomer

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Abstract

A chemically programmed photochromic liquid crystal (LC) polymer was newly synthesized and used to fabricate an actuator exhibiting reversible photo-activated bending behavior at ambient temperature. Due to the lack of chemical crosslinking in this photochromic LC elastomer, it was possible to fabricate an actuator in the form of fiber or film by melt or solution processing, respectively. The three-dimensional (3D) bending of the film actuator can be precisely controlled in various directions by polarized ultraviolet (UV) light. The novel photochromic LC elastomer, exhibiting reversible photomechanical bending with controlled directions at room temperature, is beneficial for the realization of wireless remote-controlled 3D actuators.

Graphical abstract: Photochromic 3-dimensional actuator based on an uncrosslinked liquid crystal elastomer

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Publication details

The article was received on 13 May 2009, accepted on 09 Jul 2009 and first published on 13 Aug 2009


Article type: Paper
DOI: 10.1039/B909494F
Citation: J. Mater. Chem., 2009,19, 7124-7129
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    Photochromic 3-dimensional actuator based on an uncrosslinked liquid crystal elastomer

    H. J. Choi, K. Jeong, L. Chien and M. Lee, J. Mater. Chem., 2009, 19, 7124
    DOI: 10.1039/B909494F

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