Rapid, solvent-minimized and sustainable access to various types of ferroelectric-fluid molecules by harnessing mechano-chemical technology
作者:Hiroya Nishikawa、Motonobu Kuwayama、Atsuko Nihonyanagi、Barun Dhara、Fumito Araoka
DOI:10.1039/d3tc02212a
日期:——
develop state-of-the-art device applications, effective preparation of various NF molecules is essential. Herein, to expand the NFLC molecular library, we implemented a mechanochemical (MC) technique for the production of LCs, demonstrating its high synthetic compatibility with NF/SmAFLCs. Chemical building blocks with high polarity can be bonded one by one through various ball-milling MC reactions
近年来,铁电流体,例如铁电向列液晶(N F LC)和铁电近晶A液晶(SmA F LC),由于其优异的极化特性(例如介电常数、极化率和介电常数)而引起了巨大的基础和实际兴趣。非线性光学系数)。为了深入了解这种新兴铁电相的物理基础并开发最先进的器件应用,有效制备各种 NF分子至关重要。在此,为了扩展 NF LC分子库,我们实施了机械化学 (MC) 技术来生产 LC,证明了其与 NF / SmA的高度合成兼容性F LC。高极性的化学构件可以通过各种球磨MC反应逐一键合,从而快速获得NF LC分子、一系列DIO、RM734、UUZU和BIOTN,在2.7-7小时内高产率4-8 个步骤。对于一种新的 DIO 变体,其中末端烷基链被完全去除,我们首次发现了从各向同性液体到 SmA F相的直接相变。此外,使用正向上负向下(PUND)方法评估了SmA F相中的高度双稳态极化记忆(∼5.2 μC cm -2