Design of new super-high birefringent isothiocyanato bistolanes – synthesis and properties

ABSTRACT

We report the synthesis of new laterally ethyl-substituted high birefringent phenylethynyltolane liquid crystals with alkylsulphanyl chain and isothiocyanate terminal group. The thermal and optical properties such as birefringence are measured and discussed based on their molecular structures. The compounds exhibit birefringence (Δn) in the range of 0.63–0.75 and are expected to be excellent components of high birefringent nematic mixtures for various applications.

Graphical Abstract

KEYWORDS:

• Bistolane
• liquid crystal
• nematic
• organic synthesis
• birefringence
• lateral alkyl group

Acknowledgements

This work was done under financial support of Nikon and Essilor International Joint Research Center and Military University of Technology PBS 23-651.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was done under financial support of Nikon and Essilor International Joint Research Center and Military University of Technology PBS 23-651.