[2.2]Paracyclophane-Based Double Helices: Tunable Circularly Polarized Luminescence Driven by Self-Assembly,Advanced Optical Materials

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[2.2]Paracyclophane-Based Double Helices: Tunable Circularly Polarized Luminescence Driven by Self-Assembly
Advanced Optical Materials ( IF 8.0 ) Pub Date : 2023-12-10 , DOI: 10.1002/adom.202302221
Jing He ₁ , Yanqing Fan ₁ , Zhe Lian ₁ , Shengzhu Guo ₁ , Ying Wang ₁ , Hua Jiang ₁

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Achieving high luminescence dissymmetry factors and quantum yields in the solid state remains a significant challenge in developing circularly polarized luminescence (CPL) materials. This study presents the synthesis of double helices based on planar chiral [2.2]paracyclophane ([2.2]PCP) and tetraphenylethylene (TPE), which exhibit chiroptical and aggregation-induced emission (AIE) properties. In particular, the double helix with long alkyl chains demonstrates tunable CPL activity driven by self-assembly, exhibiting dissymmetry factors ranging from 10⁻⁴ to 10⁻². Notably, doped PMMA films show an amplified dissymmetry factor of 0.058 and a high quantum yield of up to 51%. The designed molecules represent an ideal molecular functional material for generating efficient CPL with controllable dissymmetry factor and high emission efficiency in the solid state. This opens up possibilities for applications in chiroptical sensing, data storage, and light-emitting devices based on solid-state materials.

中文翻译：

[2.2]基于对环芳烷的双螺旋：自组装驱动的可调谐圆偏振发光

在固态下实现高发光不对称因子和量子产率仍然是开发圆偏振发光（CPL）材料的重大挑战。本研究提出了基于平面手性[2.2]对环芳烷（[2.2]PCP）和四苯乙烯（TPE）的双螺旋的合成，其表现出手性光学和聚集诱导发射（AIE）特性。特别是，具有长烷基链的双螺旋表现出由自组装驱动的可调CPL活性，表现出范围从10 ^-4到10 ^-2的不对称因子。值得注意的是，掺杂 PMMA 薄膜显示出 0.058 的放大不对称因子和高达 51% 的高量子产率。设计的分子代表了一种理想的分子功能材料，可产生具有可控不对称因子和固态高发射效率的高效CPL。这为手性光学传感、数据存储和基于固态材料的发光器件的应用开辟了可能性。

更新日期：2023-12-10

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