Duan, Longyan Shi, Dingqian Chen, Pei Hu, Kun Ren, Liyuan Chen, Xinbing An, Zhongwei Preparation and properties of laterally multifluorinated benzoxazole-based nematic mesogens <p>Series of laterally multifluorinated heterocyclic compounds, 2-(2ʹ,3-difluoro-4ʹ-alkoxy-1,1ʹ-biphenyl-4-yl)-benzoxazole derivatives (nPF(2)PF(3)Bx), are prepared and characterised. They mainly display enantiotropic nematic mesophases with wider mesophase ranges of 12–107°C (heating process) and 22–134°C (cooling process) than the corresponding analogues. The enhanced nematic mesophase stability is achieved via slightly increasing inter-ring twist angle with inter-ring lateral fluorine substitute in biphenyl unit, as well as through improving the molecular polarity with multifluorine substitutes. Meanwhile, two inter-ring lateral fluorine atoms lead to a decrease in melting/clearing points and a wide nematic mesophase range, which makes it possible for heterocyclic mesogens nPF(2)PF(3)Bx to use in nematic liquid crystal display mixtures.</p> Heterocyclic mesogens;enantiotropic nematic mesophase;multifluorine substituent;benzoxazole-liquid crystals;photophysical properties 2017-03-27
    https://tandf.figshare.com/articles/journal_contribution/Preparation_and_properties_of_laterally_multifluorinated_benzoxazole-based_nematic_mesogens/4789336
10.6084/m9.figshare.4789336.v1