Advances in helical substituted polyacetylene-based circularly polar-ized luminescence materials
Circularly polarized luminescence(CPL)generated by chiral luminescent substances has aroused enormous attention in multidisciplinary fields as it brings infinite potential for applications such as optoelectronics,anti-counterfeiting,biological imaging,and asymmetric synthesis.Typically,the simultaneous presence of chirality and luminescent components is a necessary condition for achieving CPL.In this regard,the chiral amplification effect of helical substituted polyacetylenes endows them with intense optical activity.Moreover,the dynamic helical structure of the polymer backbones furnishes them with stimulus responsiveness,thus enabling this type of polymers to possess distinctive advantages in constructing CPL systems.The present article reviews the state-of-the-art research progress in creating helical polyacetylene based CPL materials and chiroptical properties thereof,which are classified based on the interaction modes between chiral and luminescent components.Typical applications of the chiral polyacetylene CPL systems in chiral sensing,anti-counterfeiting,and optoelectronics are further discussed.Additionally,the current challenges and future perspectives in this field are also summarized.
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