Osamu Yokokoji, K. Shimizu, S. Inoue
Jan 1, 2009
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Journal
Liquid Crystals
Abstract
We have designed and synthesised the novel liquid crystal core structure, 2-phenyl-5,6-difluoro-1H-indene, based on preliminary calculation of the theoretical values of birefringence (Δn) and dielectric anisotropy (Δϵ). These compounds have been proved to have high nematic–isotropic transition temperature, and high optical anisotropy values with long molecular conjugation length. The introduction of lateral fluorine atoms into the 2-phenyl group of 5,6-difluoro-1H-indene derivatives leads to low viscosity and high dielectric anisotropy.