Superchiral light, generated by the interference of two counter-propagating circularly polarized light (CPL) with same frequency, opposite handedness and different intensity, exhibits enhanced dissymmetry in its interaction with chiral molecules, and has the potential for ultrasensitive detection and characterization of chiral molecules. It is anticipated that the enhanced optical dissymmetry in superchiral light (SCL) field may be utilized to promote asymmetric photochemical reactions efficiency. Herein we reported SCL impart greater chiral bias to trigger asymmetric photo-polymerization reaction from initially achiral diacetylene (DA) monomer, and the enhanced optical dissymmetry for whole polydiacetylene (PDA) films could be achieved. An explanation based on the chiral transfer and amplification of chiral bias from SCL during the polymerization process has been proposed. Moreover, thus formed chiral PDA films polymerized by SCL exhibited enhanced enantioselective recognition ability, and can serve as a direct visual probe for the discrimination of some specific enantiomers.

中文翻译：

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通过超手性光的螺旋对二乙炔的对映选择性合成中的不对称性增强。

由两种具有相同频率，相反手性和不同强度的反向传播的圆偏振光（CPL）干涉产生的超手性光在与手性分子的相互作用中表现出增强的不对称性，并具有超灵敏地检测和表征手性分子的潜力。可以预料，超手性光（SCL）场中增强的光学不对称性可用于提高不对称光化学反应效率。在本文中，我们报道了SCL从最初的非手性二乙炔（DA）单体赋予更大的手性偏压以引发不对称光聚合反应，并且可以实现整个聚二乙炔（PDA）薄膜增强的光学不对称性。已经提出了基于手性转移和在聚合过程中来自SCL的手性偏向性的放大的解释。而且，由此形成的通过SCL聚合的手性PDA膜表现出增强的对映选择性识别能力，并且可以用作鉴别某些特定对映异构体的直接视觉探针。