Synthesis of New Liquid Crystals with 2,3,4,9-Tetrahydro-1H-Fluorene Moiety

Abstract

A new range of liquid crystals containing the 2,3,4,9-tetrahydro-1H-fluorene system have been prepared and its thermal properties were examined. The mesomorphic properties are compared with those of the fluorene and trans-cyclohexane derivatives. Introduction of 2,3,4,9-tetrahydro-1H-fluorene in typical liquid crystal structure leads to decrease of melting point and the clearing point values. The chemical structures and mesogenic properties for the reported novel compounds are discussed.

Keywords:

• 2,3,4,9-tetrahydro-1H-fluorene
• cross-coupling reaction
• liquid crystals

Notes

*R˭C₅H₁₁.