AUTHOR=Liu Chunhong , Yu Zhipeng , Yao Jiabin , Ji Jiecheng , Zhao Ting , Wu Wanhua , Yang Cheng 

TITLE=Solvent-Driven Chirality Switching of a Pillar[4]arene[1]quinone Having a Chiral Amine-Substituted Quinone Subunit

JOURNAL=Frontiers in Chemistry

VOLUME=Volume 9 - 2021

YEAR=2021

URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2021.713305

DOI=10.3389/fchem.2021.713305

ISSN=2296-2646

ABSTRACT=Several new chiral pillar[4]arene[1]quinone derivatives were synthesized by reacting pillar[4]arene[1]quinone (EtP4Q1), containing four 1,4-diethoxybenzene units and one benzoquinone unit, with various chiral amines via Michael addition. The chirally modified pillar[4]arene[1]quinons showed unique chiroptical properties, giving anisotropy factors of the charge transfer up to -0.018. Intriguingly, the chiroptical properties could be switched by the use of different solvents.