New low polar tolane cholesterics designed for infrared applications. Issue 87 (6th September 2016)

• Record Type: Journal Article
• Authors: Herman, Jakub; Kula, Przemysław
• Is Part Of: RSC advances. Volume 6:Issue 87(2016)
• Page Start: 84231
• Page End: 84235
• Publication Date: 2016-09-06
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra16023a
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : We have designed, synthesized and evaluated the physical properties of new fluorinated phenyltolane based chiral liquid crystal materials with 2-methylbutyl terminal chain. Abstract : We have designed, synthesized and evaluated the physical properties of new fluorinated phenyltolane based chiral liquid crystal materials with 2-methylbutyl terminal chain. The 2- or 2, 6-fluorosubstitution in combination with the phenyltolane core brings surprising improvement of mesomorphic properties. The investigated compounds are characterized by a broad temperature range of the cholesteric (chiral nematic N*) phase, very low melting temperatures and easy thermal control of selective reflection in the near infrared region. The moderate helical twisting power β, high optical anisotropy and source of a blue phase make these compounds attractive for cholesteric mixture formulations.