Yuan Guohao, Kimura Yuko, Kobayashi Takayuki, Takeda Takashi, Hoshino Norihisa, Akutagawa Tomoyuki
Graduate School of Engineering, Tohoku University Sendai 980-8579 Japan
Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University 2-1-1 Katahira, Aoba-ku Sendai 980-8577 Japan.
Chem Sci. 2021 Sep 28;12(40):13520-13529. doi: 10.1039/d1sc03301h. eCollection 2021 Oct 20.
An alkylamide-substituted (-NHCOCH) hydrogen-bonded dibenzo[18]crown-6 derivative () was prepared to stabilise the ionic channel structure in a discotic hexagonal columnar (Col) liquid crystal. The introduction of simple MX salts such as NaPF and KI into the ionic channel of enhanced the ionic conductivity of the Col phase of the M·()·X salts, with the highest ionic conductivity reaching ∼10 S cm for K·()·I and Na·()·PF at 460 K, which was approximately 5 orders of magnitude higher than that of . The introduction of non-ferroelectric into the ferroelectric ,',''-tri(tetradecyl)-1,3,5-benzenetricarboxamide () elicited a ferroelectric response from the mixed Col phase of () () with = 0.9 and 0.8. The further doping of MX into the ferroelectric Col phase of ()() enhanced the ferroelectric polarisation assisted by ion displacement in the half-filled ionic channel for the vacant dibenzo[18]crown-6 of ()[(M)·()·(X)].
制备了一种烷基酰胺取代的（-NHCOCH）氢键二苯并[18]冠-6衍生物（），以稳定盘状六方柱状（Col）液晶中的离子通道结构。将简单的MX盐（如NaPF和KI）引入的离子通道中，提高了M·（）·X盐的Col相的离子电导率，在460 K时，K·（）·I和Na·（）·PF的最高离子电导率达到~10 S cm，比的离子电导率高约5个数量级。将非铁电体引入铁电体，'''-三（十四烷基）-1,3,5-苯三甲酰胺（），在=0.9和0.8时，从（）（）的混合Col相中引发了铁电响应。将MX进一步掺杂到（）（）的铁电Col相中，通过（）[（M）·（）·（X）]中空的二苯并[18]冠-6在半填充离子通道中的离子位移辅助，增强了铁电极化。
