Title

High Birefringence Lateral Difluoro Phenyl Tolane Liquid Crystals

Keywords

High birefringence; Liquid crystals; Negative dielectric anisotropy

Abstract

Four laterally difluorinated phenyl tolane liquid crystals were synthesised and their physical properties evaluated. These compounds exhibit a fairly small heat fusion enthalpy (ΔH ~ 12.56 kJ mol-1), which is favourable for mixture formulations. For comparison, four lateral difluoro cyclohexane tolane homologues are also studied. We doped 10 wt% of each compound into a commercial negativemixture N1 andmeasured the birefringence, visco-elastic coefficient and figure of merit. Birefringence varies very little between homologues, but the visco-elastic coefficient increases as alkyl chain length increases. The refractive indices of these guest - host mixtures at 1550 nm are also measured. © 2010 Taylor & Francis.

Publication Date

2-1-2010

Publication Title

Liquid Crystals

Volume

37

Issue

2

Number of Pages

139-147

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1080/02678290903419079

Socpus ID

76649086074 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/76649086074

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