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1 2015

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Dielectric properties and molecular motions of liquid crystal molecules in 4-(2-methylbytyl) phenyl 4-(4-octylphenyl) benzoate liquid crystal having blue phase (CE8)

Otowski W., Lewińska G.

Materials Science Poland

2015

Vol. 33, No. 2

418--429

Blue phase liquid crystals exhibit unique properties which are used in the new type of display. A blue-phase liquid crystal display was first presented commercially by Samsung in 2007. The blue-phase-three-color pixel display eliminates the need for color filters. This type of display uses blue-phase multi-component liquid crystal. Considering the one-component systems, it turns out that they are stable only in a very narrow range of temperatures between the isotropic and the chiral nematic phase (about 1 K). In 2005, a wide temperature range BP multi-component system was reported by researchers from the University of Cambridge. There are still several unsolved problems left. One of them is chemical stability and reliability. Therefore, the knowledge of molecular dynamics of blue phase liquid crystal is a prerequisite for understanding of blue-phase multi-component system. Understanding the molecular dynamics of a single component liquid-crystalline blue phase system can facilitate the solution of these problems. We present the molecular dynamics investigation of 4-(2-methylbytyl)phenyl 4-(4-octylphenyl) benzoate (CE8), which may be a good candidate to form materials suitable for blue-phase liquid crystal displays.