Humidity-Responsive Liquid Crystalline Polymer Actuators with an Asymmetry in the Molecular Trigger That Bend, Fold, and Curl
Journal of the American Chemical Society2014Vol. 136(30), pp. 10585–10588
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Laurens T. de Haan, Julien M. N. Verjans, Dirk J. Broer, Cees W. M. Bastiaansen, Albertus P. H. J. Schenning
Abstract
We show a versatile method for the preparation of a variety of humidity-responsive actuators based on a single sheet of a hydrogen-bonded, uniaxially aligned liquid crystal polymer network. In this approach, the asymmetry in the molecular trigger in the anisotropic polymer film plays a dominant role leading to programmed deformation events. The material is locally treated with a potassium hydroxide solution to create the asymmetry in the responsiveness toward humidity, which allows to prepare actuators that bend, fold, or curl.
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