trans–cis  and  trans–cis–trans  Microstructure Evolution of Azobenzene Liquid‐Crystal Polymer Networks | Zendy

Wang Hongbo | Zendy; Lee Kyung Min | Zendy; White Timothy J. | Zendy; Oates William S. | Zendy

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trans–cis and trans–cis–trans Microstructure Evolution of Azobenzene Liquid‐Crystal Polymer Networks

Author(s) -

Wang Hongbo,

Lee Kyung Min,

White Timothy J.,

Oates William S.

Publication year - 2012

Publication title -

macromolecular theory and simulations

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.37

H-Index - 56

eISSN - 1521-3919

pISSN - 1022-1344

DOI - 10.1002/mats.201100089

Subject(s) - photoisomerization , azobenzene , cis–trans isomerism , materials science , deformation (meteorology) , liquid crystal , polymer , polarization (electrochemistry) , photochemistry , isomerization , optics , chemical physics , chemistry , composite material , physics , optoelectronics , stereochemistry , organic chemistry , catalysis

The photomechanics of azobenzene LCNs is modeled using a nonlinear continuum mechanics approach that couples photoisomerization of liquid crystal domain structures with light absorption and deformation of a glassy polymer network. The effects during UV‐stimulated trans–cis photomechanical deformation versus blue‐green light ( trans–cis–trans ) photomechanical deformation are simulated. Different bending deformation is predicted by assuming liquid‐crystal order/disorder behavior during trans–cis photoisomerization in comparison to light‐polarization‐driven reorientation of the trans phase during potential trans‐cis‐trans photoisomerization. Light‐controlled deformation mechanisms offer support for improved control of photo‐responsive morphing structures with a single blue‐green polarized light source.

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