Тип публикации: статья из журнала

Год издания: 2017

Идентификатор DOI: 10.1016/j.molliq.2017.12.062

Ключевые слова: Fluorine-containing compound, Ionic effect, Liquid crystal, Operating voltage, Polymer-stabilized blue phase

Аннотация: The effects of a fluorine-containing compound (4,4'-difluorobenzophenone; DF) on the electro-optical and dielectric properties of polymer-stabilized blue phase (PSBP) liquid crystals were investigated. When a PSBP cell was driven by an in-plane electric field, the addition of DF up to 2.7. wt% effectively reduced the operation voltПоказать полностьюage by ∼. 30%. Further inspection by dielectric spectroscopy indicated that the ionic concentration in PSBP decreased with increasing loading of DF. This finding can be ascribed to the complexation of impurity ions near the ketone group and carbon-fluorine bonds of the DF compound that restrained the ion transport after photopolymerization. As a result, the DF compound can be regarded as a superior ion-suppressor, enabling the reduction in the ionic effect and, in turn, the promotion of the electro-optical response of a PSBP. © 2017 Elsevier B.V.

Журнал: Journal of Molecular Liquids

ISSN журнала: 01677322

Издатель: Elsevier B.V.

• Wu Po-Chang (Natl Chiao Tung Univ, Coll Photon, Inst Imaging & Biomed Photon, Tainan 71150, Taiwan)
• Chen Hsin-Li (Natl Chiao Tung Univ, Coll Photon, Inst Imaging & Biomed Photon, Tainan 71150, Taiwan)
• Rudakova Natalya V. (Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk 660041, Russia)
• Timofeev Ivan V. (Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Lab Nonlinear Opt & Spect, Krasnoyarsk 660041, Russia)
• Zyryanov Victor Ya. (Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Krasnoyarsk 660036, Russia)
• Lee Wei (Natl Chiao Tung Univ, Coll Photon, Inst Imaging & Biomed Photon, Tainan 71150, Taiwan)

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