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Issue 35, 2017
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Blue-shifting tuning of the selective reflection of polymer stabilized cholesteric liquid crystals

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Abstract

We report on electrically-induced, large magnitude (>300 nm), and reversible tuning of the selective reflection in polymer stabilized cholesteric liquid crystals (PSCLCs) prepared from negative dielectric anisotropy nematic liquid crystal hosts. The electrically-induced blue shift in the selective reflection of the PSCLCs is distinguished from our prior reports of bandwidth broadening and red-shifting tuning of the selective reflection in PSCLCs. The dominant factor in delineating the electro-optic response of the PSCLCs detailed here are the preparation conditions. Specifically, long exposure to UV intensity exceeding 250 mW cm−2. Other factors are shown to contribute to the response, including the type and concentration of photoinitiator.

Graphical abstract: Blue-shifting tuning of the selective reflection of polymer stabilized cholesteric liquid crystals

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Supplementary files

Article information


Submitted
15 Jun 2017
Accepted
08 Aug 2017
First published
08 Aug 2017

Soft Matter, 2017,13, 5842-5848
Article type
Paper

Blue-shifting tuning of the selective reflection of polymer stabilized cholesteric liquid crystals

K. Min Lee, V. P. Tondiglia, N. P. Godman, C. M. Middleton and T. J. White, Soft Matter, 2017, 13, 5842
DOI: 10.1039/C7SM01190C

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