2PB36 ジベンゾクラウンエーテル構造を有する液晶化合物の熱物性とイオン伝導性におけるアルカリ金属イオンの影響

概要

論文の詳細を見る
Ion conductive liquid crystals containing a dibenzocrown ether unit, bis[4,4'(5')-{3,4,5-tris(p-dodecyloxybenzyloxy)benzoyloxymethyl}]dibenzo-14-crown-4 (1) and its corresponding dibenzo-18-crown-6 derivative 2 were prepared. From DSC and thermal optical polarized microscopy, 1 showed only one phase transition from the isotropic to the crystalline phase, and the mixtures of 1 and an equimolar amount of alkali metal ion (Li^+, Na^+) also showed only one phase transition from the isotropic to the amorphous phase on cooling process. From these results, it is realized that 1 and its mixtures with alkali metal ion don't have liquid crystalline phases. On the other hand, 2 has liquid crystalline phases, and the ionic conductivity was increased 1.5 orders of magnitude by the addition of K^+. However the effect of the amounts of K^+ was not observed.
日本液晶学会の論文
2001-09-24