1D11 エーテル型二量体液晶における奇妙な相転移挙動

概要

論文の詳細を見る
It is well known that ether-type dimeric compounds also exhibit pronounced odd-even effects as observed in ester-type ones. So we prepared the ether-type series, di-mPBn, and investigated the mesophase properties. As a result, odd-even behaviours of ether-type dimers appear to be quite unique compared with ester-linkaged materials. The most notable result is that the odd-membered dimers not only show the ftemperature dependence of tilt angle in the region of smectc C_A phase but also form smectic A and nematic phases at higher temperature region. This, observation is unusual in dimeric system, however is normal in monomeric series, and can be explained that bent-molecules contributed to alternate tilt of mesogen do vary their conformatmon with increase the temperature and at last molecular shape becomes almost linear.
日本液晶学会の論文
1996-09-30