Chiral structures in azobenzene-containing systems: Construction, regulation, and application

Abstract

Chirality is a fundamental property in nature, which is essential for the existence and survival of living organisms. Smart responsive chiroptical materials have garnered increasing attention due to their unique structural characteristics and potential applications. Among these, azobenzene (Azo), as a typical photoresponsive chromophore, plays a crucial role in constructing and controlling chiral structures. The unique cis-trans isomerization, liquid crystallinity, and other physicochemical properties allow for a wide range of tunability in stimuli-responsive chiroptical materials. Herein, we review the research studies in the field of chiral/achiral Azo building blocks for multilevel chiral generation as well as chiral switching, and summarize the recent advances on the applications of the chiral Azo structures from micro to macro levels. Finally, we aim to provide an overview of the potential challenges and new research opportunities for the development of novel smart responsive chiroptical materials.

Keywords

azobenzene / chiral regulation / chirality / chiroptical switches / stimuli responsive / supramolecular selfassembly

RIGHTS & PERMISSIONS

2024 2024 The Authors. Responsive Materials published by John Wiley & Sons Australia, Ltd on behalf of Southeast University.