Chem. J. Chinese Universities ›› 2024, Vol. 45 ›› Issue (6): 20240118.doi: 10.7503/cjcu20240118

• Organic Chemistry • Previous Articles     Next Articles

An Electrically Responsive Multiple Chiroptical Switching System Based on a Rhodol Derivative

WANG Tongtong, WANG Tiefeng, XU Fei, YU Yang()   

  1. College of Advanced Materials Engineering,Jiaxing Nanhu University,Jiaxing 314001,China
  • Received:2024-03-12 Online:2024-06-10 Published:2024-04-17
  • Contact: YU Yang E-mail:yuyang@jxnhu.edu.cn
  • Supported by:
    the Public Welfare Research Plan of Jiaxing City, China(2023AY11016);the Start-up Funds of Jiaxing Nanhu University, China(QD61220017)

Abstract:

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.

Key words: Proton-coupled electron transfer, Multiple chiroptical switch, Electrically response, Electro-acid/base

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