Synthesis and Mesomorphism of Semi-Fluorinated Chain Liquid Crystals with [1,2,3]-Triazole Rings
Series of semi-fluorinated chain liquid crystals with [1,2,3]-triazole rings have been synthesized with CuI-Et3N catalyzed alkyne-azide cycloaddition reaction. The selectively produced 1,4-disubstituted regioisomers were characterized by using IR, NMR, and Mass. The mesomorphic behaviors were characterized with polarizing optical microscopy and differential scanning calorimetry. Compounds with perfluorinated chains have showed smectic A phase.
Yuan Ming Huang
Y. Yang et al., "Synthesis and Mesomorphism of Semi-Fluorinated Chain Liquid Crystals with [1,2,3]-Triazole Rings", Key Engineering Materials, Vols. 428-429, pp. 135-139, 2010