Dissymmetry enhancement in enantioselective synthesis of helical polydiacetylene by application of superchiral light

Chenlu He, Guang Yang, Yan Kuai, Sizhen Shan, Lin Yang, Jingang Hu, Douguo Zhang (), Qijin Zhang and Gang Zou ()
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Chenlu He: University of Science and Technology of China
Guang Yang: Northeast Forestry University
Yan Kuai: University of Science and Technology of China
Sizhen Shan: University of Science and Technology of China
Lin Yang: University of Science and Technology of China
Jingang Hu: University of Science and Technology of China
Douguo Zhang: University of Science and Technology of China
Qijin Zhang: University of Science and Technology of China
Gang Zou: University of Science and Technology of China

Nature Communications, 2018, vol. 9, issue 1, 1-8

Abstract: Abstract 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.

Date: 2018
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DOI: 10.1038/s41467-018-07533-y

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