Mesogens with central naphthalene core substituted at various positions

ABSTRACT

We have prepared liquid crystalline materials based on hydroxynaphthalene carboxylic acids. The mutual location of both functional groups has been varied, which resulted in compounds possessing a bend angle of 120° and 60°, therefore in bent-core and V-shaped compounds, respectively. The mesomorphic properties have been established with polarizing optical microscopy, DSC measurements and X-ray investigation. The properties of the studied have been compared with analogous derivatives to establish the role of ester orientation in the vicinity of the central naphthalene core.

Graphical Abstract

KEYWORDS:

• Bent-core liquid crystals
• naphthalene central unit
• symmetry
• mesomorphic properties

Disclosure statement

No potential conflict of interest was reported by the authors.

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Funding

The presented work was supported by the Czech Science Foundation [project 16-12150S].