This work aims to examine the effect of self-assembly on the chiroptic responses of the achiral block copolymer (BCP) polystyrene-b-poly(ethylene oxide) (PS-b-PEO) associated with chiral luminophores, (R)- or (S)-1,1′-bi-2-naphthol ((R)- or (S)-BINOL), through hydrogen bonding. With the formation of a well-ordered helical phase (H*), significantly induced circular dichroism (ICD) signals for the PEO block in the mixture can be found. Most interestingly, a remarkable amplification with an extremely large dissymmetry factor of luminescence (g_lum) from 10^–3 to 0.3 (i.e., induced circular polarized luminescence (iCPL) behavior) for the chiral BINOLs in the mixture can be achieved by the formation of the helical phase (H*) via mesochiral self-assembly. As a result, by taking advantage of BCP for mesochiral self-assembly, it is feasible to create a nanostructured monolith with substantial optical activities, offering promising applications in the design of chiroptic devices.

中文翻译：

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手性发光团引导非手性嵌段共聚物的自组装用于放大圆偏振发光


这项工作旨在研究自组装对与手性发光体 (R)- 或 (R)- 或 ( S)-1,1'-bi-2-萘酚（(R)-或(S)-BINOL），通过氢键连接。随着有序螺旋相 (H*) 的形成，可以发现混合物中 PEO 嵌段显着诱导的圆二色性 (ICD) 信号。最有趣的是，手性的发光不对称因子 (g _lum ) 从 10 ^–3 到 0.3（即诱导圆偏振发光 (iCPL) 行为）显着放大混合物中的 BINOL 可以通过介手性自组装形成螺旋相 (H*) 来实现。因此，通过利用 BCP 进行介手性自组装，可以创建具有大量光学活性的纳米结构整体，从而在手性光学器件的设计中提供有前景的应用。