Preparation of helical liquid crystal electrolyte with L-isoleucine derivatives and molecular asymmetric imprinting polymerization in liquid crystal to produce electro-optically coloration active polymers having chiral charge carrier chiralions
Preparation of helical liquid crystal electrolyte with L-isoleucine derivatives and molecular asymmetric imprinting polymerization in liquid crystal to produce electro-optically coloration active polymers having chiral charge carrier chiralions
复制标题
用L-异亮氨酸衍生物制备螺旋液晶电解质和在液晶中进行分子不对称印迹聚合以产生具有手性电荷载体手性离子的电光着色活性聚合物
DOI：
10.1080/15421406.2022.2129288
复制
发表时间：
2022-10
影响因子：
0.7
通讯作者：
Kyoka Komaba;T. Jo;H. Goto
中科院分区：
文献类型：
--
作者：
Kyoka Komaba;T. Jo;H. Goto
摘要采用分子不对称印迹聚合技术，研究了液晶分子的不对称印迹聚合。合成了一种含氟的L-异亮氨酸衍生物，作为手性诱导剂，将手性液晶诱导成手性液晶。以氨基酸为手性物质，可以方便地得到具有多个不对称中心的物质。L-异亮氨酸衍生物诱导4-氰基-4 '-己基联苯（6CB）形成螺旋结构。在该液晶中进行了π共轭聚合物的电化学制备。指纹纹理来源于液晶的聚合物被转录。测定了聚合物氧化态（掺杂态）和还原态（去掺杂态）的紫外-可见光谱和圆二色性（CD）光谱。通过在螺旋液晶中的电化学聚合反应，制备了分子聚集印迹手性聚合物，该聚合物具有液晶状聚集体结构，通过聚合物阻转异构体的形成而具有无立体异构中心的手性，并在电化学驱动下改变旋光性，是一种电光显色活性聚合物。最后，极化子和双极化子都是手性结构。聚合物中的这些电荷载体可以被确定为手性电荷载体“手性离子”。图形摘要
Abstract Molecular asymmetric imprinting polymerization in the cholesteric liquid crystal was carried out. An L-isoleucine derivative with fluorine was synthesized for a chiral inducer to induce the cholesteric liquid crystal from the nematic liquid crystal. A substance with multiple asymmetric centers can be obtained conveniently to use amino acid as chiral substance. The L-isoleucine derivative induced helical structure for 4-cyano-4'-hexylbiphenyl (6CB). Electrochemical preparation of π-conjugated polymers was carried out in the cholesteric liquid crystal. Fingerprint texture derived from the cholesteric liquid crystal was transcribed to the polymers. UV-vis and circular dichroism (CD) spectra of oxidized (doped) for and reduced (dedoped) form of the polymer were measured. Electrochemical polymerization in the helical liquid crystal produced the molecular aggregation imprinted chiral polymers, which have liquid crystal-like aggregation form, chirality with no stereogenic center via formation of polymer atropisomer, and electrochemical driven change in optical activity, as a form of electro-optically coloration active polymers. Finally, the polarons and bipolarons are in the form of chiral structure. These charge carriers in the polymers can be determined as chiral charge carrier “chiralions”. Graphical Abstract