摘要
通过在兼具酸碱响应变色的3′-氨基-6′-羟基-螺{异苯并呋喃-1(3H)|9′-[9H]氧杂蒽}-3-酮(Rhodol)衍生物主体上引入手性苯胺结构,制备了兼具酸碱响应特性的手性光学开关.然后,基于质子耦合电子转移机制,将其与电致酸/碱分子结合,开发了一种新型的电响应多重手性光学开关体系.在合适的电压控制下,该体系的圆二色光谱可在3种状态之间发生可逆切换:初始可见光波段无圆二色光谱信号,较大正电压下产生正圆二色光谱信号,较大负电压下产生负圆二色光谱信号,较小反向电压可恢复至初始状态.本文开拓了一种构建电响应多重手性光学开关体系的新路径,为多重手性光学开关材料的设计与应用提供了思路.
In this study,a chiral aniline structure was introduced into the 3′-amino-6′-hydroxyspiro[2-benzofuran-3,9′-xanthene]-1-one(Rhodol)derivative main molecule,which exhibits pH(acid and base)-responsive color changes.Then,based on the proton-coupled electron transfer mechanism,a novel electrically responsive multiple chiroptical switching system was constructed by integrating the functional Rhodol derivative with electro-acid/base molecules.Controlled by suitable voltages,this system could switch among three circular dichroism absorption states reversibly:in the visible light range,no circular dichroism signal at the initial state,positive circular dichroism signal under a significant positive voltage,and negative circular dichroism signal under a considerable negative voltage.More importantly,all the switching processes were totally reversible.This research opens a new route to achieve the development of electrically responsive multiple chiroptical switching systems,and offers an important insight on the design and application of innovative materials for multiple chiroptical switches.
作者
王彤彤
王铁峰
许斐
于洋
WANG Tongtong;WANG Tiefeng;XU Fei;YU Yang(College of Advanced Materials Engineering,Jiaxing Nanhu University,Jiaxing 314001,China)
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2024年第6期61-68,共8页
Chemical Journal of Chinese Universities
基金
嘉兴市公益性研究计划(批准号:2023AY11016)
嘉兴南湖学院校高层次人才启动经费(批准号:QD61220019,QD61220017)资助。
关键词
质子耦合电子转移
多重手性开关
电响应
电致酸/碱
Proton-coupled electron transfer
Multiple chiroptical switch
Electrically response
Electro-acid/base
