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首页> 外文期刊>Chemistry: A European journal >Synthesis of Optically Active, X-Shaped, Conjugated Compounds and Dendrimers Based on Planar Chiral [2.2]Paracyclophane, Leading to Highly Emissive Circularly Polarized Luminescence
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Synthesis of Optically Active, X-Shaped, Conjugated Compounds and Dendrimers Based on Planar Chiral [2.2]Paracyclophane, Leading to Highly Emissive Circularly Polarized Luminescence

机译：基于平面手性[2.2]吡咯烷酮的光学活性，X形，共轭化合物和树枝状大分子的合成，导致高发射圆偏振发光

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摘要

Optically active, Frechet-type dendrimers containing an emissive X-shaped -electron system as the core unit were synthesized. Gram-scale optical resolution and transformations of 4,7,12,15-tetrasubstituted [2.2]paracyclophanes were also carried out. The high-generation dendrons effectively absorbed UV light and transferred energy to the core, resulting in high photoluminescence (PL) from the core. In addition, the dendrons sufficiently isolated the emissive X-shaped conjugated core and bright emission was observed from both thin films and solutions. Intense circularly polarized luminescence (CPL) was observed from the thin film. The dendrimer films exhibited excellent optical properties, such as large molar extinction coefficients, high fluorescence quantum efficiencies, intense PL and CPL, and large CPL dissymmetry factors.
机译：合成了具有发射性X形电子系统作为核心单元的光学活性Frechet型树枝状聚合物。还进行了4,7,12,15-四取代[2.2]对环环烷的克级光学拆分和转化。新一代树突有效吸收紫外线并将能量转移到核心，从而导致核心产生高光致发光（PL）。另外，从薄膜和溶液中都观察到树枝状结构充分隔离了发射的X形共轭核，并观察到明亮的发射。从薄膜观察到强烈的圆偏振发光（CPL）。树枝状聚合物膜表现出优异的光学性质，例如大的摩尔消光系数，高的荧光量子效率，强烈的PL和CPL，以及大的CPL不对称因素。

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