AMPHIPHILIC AND MESOGENIC CARBOHYDRATES. IX. PERFLUOROALKYL SUBSTITUTED MONOSACCHARIDES : A NEW GROUP OF AMPHIPHILIC LIQUID CRYSTALS
作者： C. ZUR , A. O. MILLER , R. MIETHCHEN
关键词: Group (periodic table) 、 Lyotropic liquid crystal 、 Monosaccharide 、 Materials science 、 Liquid crystal 、 Carbohydrate 、 Organic chemistry 、 Amphiphile 、 Sugar 、 Mesogen
摘要: The thermal properties of twelve 'single-tailed' carbohydrate-based liquid crystal materials which have a perfluoroalkyl chain (n-C4F9, n-C6F13, n-C8F17) linked to the polar sugar head group are described. All reported amphiphiles, 6-deoxy-6-C-perfluorohexyl-L-altrose 1, (5R)-xylopentoses 2, 3 and 4, 5,6-dideoxy-6-C-perfluoroalkyl-D-glucofuranoses 5 6, 2,3-O-perfluoroalkylidene-D-gulopyranoses 7, 8 9 3,4-O-perfluoroalkylidene- D-altropyranoses 10 11 form mesophases smectic A type. Even C4F9-chain (compounds 10) is long enough cause crystalline behaviour.
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