High Birefringence Phenylacetylene Liquid Crystals with Low Viscosity

• Published in: Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals Vol. 364; no. 1; pp. 711 - 718
• Main Authors: Sekine, Chizu, Fujisawa, Koichi, Iwakura, Kazunori, Minai, Masayoshi
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Philadelphia, PA Taylor & Francis Group 01.08.2001; Gordon and Breach
• Subjects: Anisotropy of Polarizability; Birefringence; Birefringence (including stress birefringence, flow birefringence, etc.); Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Exact sciences and technology; High Birefringence; Liquid crystals; Low Viscosity; Optical Anisotropy; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Optical properties of bulk materials and thin films; Phenylacetylene; Physics; Structure of solids and liquids; crystallography; Acetylenic aliphatic compound; Substituent effect; Viscosity; Polarizability; Experimental study; Liquid crystals; Nematic crystals; Optical anisotropy; Optical properties; Birefringence; Benzenic compound; Property structure relationship; Chemical synthesis
• ISSN: 1058-725X
• DOI: 10.1080/10587250108025039

We have synthesized new high Δ n 3-ring phenylacetylene(3PA) liquid crystals which have substituent groups with core center phenyl ring and investigated the effects of substitution on physical properties. Nematic range and viscosity were improved remarkably with keeping high Δ n by introducing trifluoromrthoxy group. The Δ n of 3PAs were also descussed with relationship of polarizability and order parameter.