Structural Analysis of Chiral Dopants in Nematic Systems by Example of Ether-Ester-Substituted 1,4:3,6-Dianhydrohexitols

Abstract

Series of ether-ester-substituted 1,4:3,6-dianhydrohexitols were synthesized and studied as chiral dopants to nematics as compositions with 4′-pentyl-4-cyanobiphenyl. The most helical twisting power was found for bis-esters. Lesser values were found for mixed ether-esters with certain configuration. Other ethers and ether-esters revealed noticeably smaller values. Supramolecular peculiarities of such systems and their role in helical twisting are discussed.

Keywords:

• Chiral dopant
• helical twist
• induced cholesterics
• substituted 1,4:3,6-dianhydrohexitols

Acknowledgments

We thank the National Academy of Science of Ukraine for the financial support, grant no. 0110U000623.