Syntheses of new diluents for medium birefringence liquid crystals materials

ABSTRACT

New liquid crystals of 3HEHV ((4-trans-propyl-cyclohexyl-1), (4ʹ-vinyl-cyclohexyl-1ʹ)-ethane-1,2) and 3HB2V ((4-trans-propyl-cyclohexyl-1), (4-butenyl-3,4)-benzene) were synthesised and evaluated as the diluents for medium birefringence liquid crystal mixtures. The procedures transferring cis-isomers into trans-isomers of the cyclohexane were described. The results showed that both 3HEHV and 3HB2V decrease the crystallisation temperature and the viscosities by doping them with the medium birefringence mixtures in a fraction of 15%. The characteristics of the structures are correlated with the properties of the mixtures.

Graphical Abstract

KEYWORDS:

• Medium birefringence
• liquid crystal mixture
• viscosity
• crystallisation temperature

Acknowledgments

The authors thanks for the financial support by National Natural Science Foundation Committee of China (51773112, 21673134), Program for Key Science & Technology Innovation Team of Shaanxi Province (2015KCT-13, 2018TD030), Ministry of Education Joint Fund (6141A02022219) and the Fundamental Research Funds for the Central Universities (GK201801001, GK201703030). We are grateful to Professor Wenliang Wang at Shaanxi Normal University for theoretical calculations.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by the National Natural Science Foundation of China [51773112, 21673134]; Program for Key Science & Technology Innovation Team of Shaanxi Province [2015KCT-13, 2018TD030]; Ministry of Education Joint Fund [6141A02022219]; Fundamental Research Funds for the Central Universities [GK201801001, GK201703030].