主催: 応用物理学会, 高分子学会, 日本化学会 液晶討論会世話人会
会議名: 第23回 液晶討論会
回次: 23
開催地: 東京工業大学
開催日: 1997/09/25 - 1997/09/27
Deuterium NMR experiments were carried out for the reentrant liquid crystal CBOBP, (4-cyanobenzoyloxy-[4-octylbenzoyloxy]-.p-phenylene, and the chain-deuterated analog, CBOBP-d17. Significantly different dynamic behaviors were found between the protonated and deuterated alkyl chains. The deuterated chain exhibits distinctly higher orientational order in the reentrant nematic and the smectic A1 phases. A mechanism of the reentrant phase transition is discussed on the basis of the mass effect on the chain dynamics and the phase transition temperatures.