Title

Mesomorphic And Dielectric Properties Of Esters Useful For Formulation Of Nematic Mixtures For Dual Frequency Addressing System

Keywords

Dual-frequency addressing; Fluorosubstituted esters; Isothiocyanato esters; Liquid crystal

Abstract

Mesomorphic and dielectric properties of three homologous series of two and three ring fluorosubstituted esters are described. They are 4-cyano-3-fluorophenyl 4-alkyloxy-2-fluorobenzoates, 4-cyano-3-fluorophenyl 4-(4-alkylbenzoyloxy)-2-fluorobenzoates and 3-fluoro-4-cyanophenyl, or 3-fluoro-4-isothiocyanatophenyl or 3,4-difluorophenyl 4'-alkyl-2,3-difluoro- biphenyl-4-carboxylates. The compounds exhibit the nematic mesophase accompanied by the smectic A or smectic C mesophase in some cases. Most of them show strong dependence of the dielectric anisotropy Δε upon frequency, at low frequencies Δε reaches a value ∼200, while at high frequencies a small negative dielectric anisotropy appears. © 2009 © Versita Warsaw and Springer-Verlag Berlin Heidelberg.

Publication Date

1-1-2009

Publication Title

Opto-Electronics Review

Volume

17

Issue

1

Number of Pages

16-19

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.2478/s11772-008-0057-5

Socpus ID

58149484919 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/58149484919

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