Liquid Crystals for IR: Part III - Bi- and multicomponent mixtures based on perfluoroalkyl or perfluoroalkoxy terminated oligophenyls and tolanes

Nine bicomponent systems have been prepared in order to check the ability of maintaining liquid crystalline properties of newly synthesised non-mesomorphic compounds shown previously (part I and part II) with compound having broad temperature range of nematic phase. Based on this study, several mult...

Full description

Saved in:
Bibliographic Details
Published in:Liquid crystals 2020-12, Vol.47 (14-15), p.2161-2170
Main Authors: Kula, Przemysław, Czerwiński, Michał, Herman, Jakub, Harmata, Piotr
Format: Article
Language:English
Subjects:
Anisotropy
Birefringence
bistolane
Crystals
fluorinated liquid crystal
infrared transparent material
Liquid crystals
Melting point
Melting points
nematic
Perfluoroalkyl & polyfluoroalkyl substances
phenyltolane
superfluorinated material
Tolane
Viscosity
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Nine bicomponent systems have been prepared in order to check the ability of maintaining liquid crystalline properties of newly synthesised non-mesomorphic compounds shown previously (part I and part II) with compound having broad temperature range of nematic phase. Based on this study, several multicomponent mixtures has been developed. Their mesomorphic and spectral properties as well as birefringence, dielectric anisotropy and viscosity have been investigated. All of prepared mixtures are characterised by a wide transparency in MWIR region. Two multicomponent mixtures with different sign of dielectric anisotropy exhibit a very broad temperature range of nematic phase with the melting point below −10°C, birefringence value above 0.2, dielelectric anisotropy values above 2.0 and viscosity values below 77 mPa*s.
ISSN:0267-8292
1366-5855
DOI:10.1080/02678292.2020.1810793