PBa07 4環性ツイン型ベンゼノイド液晶の合成と物性

抄録

Benzenoid twins 2 showed smectic C phases enantiotropically. When the inner alkylene chain length is four or eight, the higher ordered smectic phases appeared. Clearing points of benzenoid twins were higher than those of the corresponding troponoid twins 1. From the X-ray diffraction study of the benzenoid twin, the layer spacing of the smectic C phase was determined to be 41 Å whereas the molecular length is calculated to be 65 Å.