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The contribution of intermolecular forces to phototropic actuation of liquid crystalline elastomers

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Abstract

Photomechanical effects in liquid crystal elastomers (LCEs) functionalized with photochromic moieties, such as azobenzene, have been widely studied. This prior work has demonstrated that isothermal, photoinduced (e.g. phototropic) disruption of order via isomerization of azobenzene affects the anisotropic chain configurations of the polymer network. Here, we examine the contribution of the strength of intermolecular interactions between polymer chains in the LCE to both the thermotropic and phototropic response. By incorporating liquid crystalline monomers with reduced aromatic content, both the temperature and irradiation conditions to induce mechanical response are reduced.

Graphical abstract: The contribution of intermolecular forces to phototropic actuation of liquid crystalline elastomers

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Article information


Submitted
07 Jan 2021
Accepted
08 Feb 2021
First published
22 Feb 2021

Polym. Chem., 2021, Advance Article
Article type
Paper

The contribution of intermolecular forces to phototropic actuation of liquid crystalline elastomers

T. S. Hebner, C. N. Bowman and T. J. White, Polym. Chem., 2021, Advance Article , DOI: 10.1039/D1PY00028D

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