A series of C2-symmetric compounds with different core sizes and varying lengths and numbers of alkoxy side chains were prepared, and the factors influencing their liquid crystalline mesophase behaviour were investigated. The compounds studied were based on benzophenone, dibenzylidene-acetone, and 1,9-diphenyl-nona-1,3,6,8-tetraen-5-one cores with either 1 or 2 linear alkoxy side chains. The side chains were varied in length from C6H13 to C12H25. The liquid crystalline mesophase behaviour of the compounds was investigated using differential scanning calorimetry, polarizing optical microscopy, and small-angle X-ray scattering (SAXS). It was found that a number of the molecules were able to self-assemble into smectic and nematic liquid crystalline phases.
研究人员制备了一系列具有不同核心尺寸、不同长度和数量烷氧基侧链的 C2 对称化合物,并对影响其液晶介相行为的因素进行了研究。所研究的化合物以
二苯甲酮、
二亚苄基丙酮和 1,9
-二苯基-1,3,6,8-四烯-5-酮为核心,带有 1 或 2 条线性烷氧基侧链。侧链的长度从
C6H13 到
C12H25 不等。利用差示扫描量热法、偏振光学显微镜和小角 X 射线散射(
SAXS)对这些化合物的液晶介相行为进行了研究。研究发现,一些分子能够自组装成胶粘和向列液晶相。