Adjustable chiral self-sorting and self-discriminating behaviour between diamond-like Tröger's base-linked cryptands
作者:Yuan Chen、Cheng Qian、Qian Zhao、Ming Cheng、Xinran Dong、Yue Zhao、Juli Jiang、Leyong Wang
DOI:10.1039/c9cc03577j
日期:——
Two isomers of Tröger's base-linked cryptands 5a and 5b were synthesized, and both of them have two chiral N-centers, exhibiting rare diamond-like scaffolds. Particularly, when growing from the solution of rac-5a, a single enantiomer RNRN-5a was found in the crystal cell, revealing chiral self-sorting behaviour. However, when adding CF3COOH to protonate Tröger's base in the solution of rac-5a, two
合成了Tröger碱基连接的穴状配体5a和5b的两个异构体,它们都具有两个手性N中心,表现出稀有的类金刚石骨架。特别地,当从rac - 5a的溶液中生长时,在晶体细胞中发现单个对映异构体R N R N -5a,这表明手性自分选行为。但是,当在rac - 5a溶液中将CF 3 COOH添加到质子化Tröger碱中时,两个对映异构体在晶胞中成对形成,表现出手性自识别行为。
[EN] LIQUID CRYSTAL ALIGNMENT AGENT, LIQUID CRYSTAL ALIGNMENT FILM, AND LIQUID CRYSTAL DISPLAY ELEMENT<br/>[FR] AGENT ET FILM D'ALIGNEMENT DE CRISTAUX LIQUIDES, ET ÉLÉMENT D'AFFICHAGE À CRISTAUX LIQUIDES<br/>[JA] 液晶配向剤、液晶配向膜及び液晶表示素子