Nonconventional Fluorescence-Based Circularly Polarized Luminescent Core/Shell Particles: Maleic Anhydride Copolymer as the Core and Chiral Helical Polyacetylene as the Shell,ACS Macro Letters

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Nonconventional Fluorescence-Based Circularly Polarized Luminescent Core/Shell Particles: Maleic Anhydride Copolymer as the Core and Chiral Helical Polyacetylene as the Shell
ACS Macro Letters ( IF 5.1 ) Pub Date : 2023-04-06 , DOI: 10.1021/acsmacrolett.3c00141
Yanze Liu ₁ , Shenghua Yang ₁ , Biao Zhao ₁ , Jianping Deng ₁

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Chiroptical micro/nanomaterials with circularly polarized luminescence (CPL) properties have aroused ever-increasing attention. However, the variety of such materials is seriously limited in self-assembly systems from small organic molecules. Herein, we report an unprecedented, facile strategy to achieve monodispersed polymer-based CPL-active core/shell particles using maleic anhydride copolymer as core and chiral helical polyacetylene as shell. Noticeably, the obtained core/shell particles carry no conventional fluorescent units, but can show intense blue-emitting nonconventional fluorescence with both aggregation-induced emission and concentration-enhanced emission performance. In particular, it is interesting that excitation-dependent CPL emission behavior is further observed in the core/shell particles, with the highest luminescence dissymmetry factor of 5 × 10^–3. The present work provides a versatile platform with wide universality for constructing polymeric CPL nano/microarchitectures.

中文翻译：

非常规荧光基圆偏振发光核/壳粒子：马来酸酐共聚物为核，手性螺旋聚乙炔为壳

具有圆偏振发光（CPL）特性的手性光学微/纳米材料引起了越来越多的关注。然而，这种材料的种类在小有机分子的自组装系统中受到严重限制。在此，我们报告了一种前所未有的简便策略，以马来酸酐共聚物为核，手性螺旋聚乙炔为壳，实现基于单分散聚合物的 CPL 活性核/壳颗粒。值得注意的是，所获得的核/壳颗粒不携带常规荧光单元，但可以显示出强烈的蓝色发射非常规荧光，同时具有聚集诱导发射和浓度增强发射性能。特别有趣的是，在核/壳粒子中进一步观察到依赖于激发的 CPL 发射行为，^–3。目前的工作为构建聚合物 CPL 纳米/微结构提供了一个具有广泛通用性的多功能平台。

更新日期：2023-04-06

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