磷光
材料科学
光电子学
光学
结晶学
化学
物理
荧光
作者
Jiao Liu,Junjie Wu,Jiaqi Wei,Zhi Huang,Xin-Yu Zhou,Jinying Bao,Ruochen Lan,Yi Ma,Bingxiang Li,Huai Yang,Yanqing Lu,Qiang Zhao
标识
DOI:10.1002/anie.202319536
摘要
Abstract Achieving circularly polarized organic ultralong room‐temperature phosphorescence (CP‐OURTP) with a high luminescent dissymmetry factor (g lum ) is crucial for diverse optoelectronic applications. In particular, dynamically controlling the dissymmetry factor of CP‐OURTP can profoundly advance these applications, but it is still unprecedented. This study introduces an effective strategy to achieve photoirradiation‐driven chirality regulation in a bilayered structure film, which consists of a layer of soft helical superstructure incorporated with a light‐driven molecular motor and a layer of room‐temperature phosphorescent (RTP) polymer. The prepared bilayered film exhibits CP‐OURTP with an emission lifetime of 805 ms and a g lum value up to 1.38. Remarkably, the g lum value of the resulting CP‐OURTP film can be reversibly controlled between 0.6 and 1.38 over 20 cycles by light irradiation, representing the first example of dynamically controlling the g lum in CP‐OURTP.
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