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

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Blue-shifting tuning of the selective reflection of polymer stabilized cholesteric liquid crystals
Soft Matter ( IF 2.9 ) Pub Date : 2017-08-08 00:00:00 , DOI: 10.1039/c7sm01190c
Kyung Min Lee _{1,

2,

3,

4,

5} , Vincent P. Tondiglia _{1,

2,

3,

4,

5} , Nicholas P. Godman _{1,

2,

3,

4,

5} , Claire M. Middleton _{1,

2,

3,

4,

5} , Timothy J. White _{1,

2,

3,

4}

Affiliation

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.

中文翻译：

聚合物稳定的胆甾型液晶的选择性反射的蓝移调谐

我们报告了电感应的大幅度（> 300 nm），以及由负介电各向异性向列型液晶主体制备的聚合物稳定的胆甾型液晶（PSCLCs）中选择性反射的可逆调谐。PSCLC的选择性反射中的电感应蓝移与我们先前对PSCLC的选择性反射的带宽扩展和红移调整的报道不同。在这里详细描述PSCLC的电光响应的主要因素是制备条件。具体地，长时间暴露于超过250mW cm ^-2的UV强度。其他因素也显示出对反应的影响，包括光引发剂的类型和浓度。

更新日期：2017-09-13

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