Low Mid-Infrared Absorption Tolane Liquid Crystals Terminated By 2,2-Difluorovinyloxyl: Synthesis, Characterization And Properties

Abstract

The synthesis and characterization of new 2,2-difluorovinyloxyl terminated tolane liquid crystals are reported. The mesomorphic properties, mid-wave infrared (MWIR) absorption and birefringence were investigated. The results show that these materials exhibit low absorption loss, a wide nematic phase range, a low melting point and high birefringence. The influences of fluorine substitution and terminal groups were discussed. Moreover, a room temperature eutectic mixture is formulated with relatively high birefringence (Δn = 0.254 at λ = 4 μm), modest dielectric anisotropy (Δϵ = 2.37), low viscosity (182.9 mPa s) and a low absorption coefficient in the 3-5 μm region.

Publication Date

1-1-2016

Publication Title

Journal of Materials Chemistry C

Volume

4

Issue

22

Number of Pages

4939-4945

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1039/c6tc01249c

Socpus ID

84973487364 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84973487364

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