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Highly enantioselective photo-polymerization enhanced by chiral nanoparticles and in situ photopatterning of chirality

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  • Chenlu He

    (University of Science and Technology of China)

  • Zeyu Feng

    (University of Science and Technology of China)

  • Sizhen Shan

    (University of Science and Technology of China)

  • Mengqiao Wang

    (University of Science and Technology of China)

  • Xin Chen

    (Boston University)

  • Gang Zou

    (University of Science and Technology of China)

Abstract

Chiral noble metal nanoparticles has recently gained great interest due to their potential applications including ultrasensitive chiral recognition and asymmetric synthesis. We anticipate that they could be utilized to induce asymmetric photo-polymerization reactions with high enantioselectivity and reactivity. Here, we report such a system. By employing silver nanoparticles modified with cysteine as the chiral inducer, polydiacetylene (PDA) with high chiral asymmetry was obtained from achiral diacetylene monomers triggered with unpolarized UV light. Furthermore, the helical sense of chirality can be controlled by varying the wavelength of UV irradiation. This enables a feasible and economical method to fabricate programmable 2D patterns of chiral PDA with tailored chirality distributions, such as smooth gradients in chirality and micropatterns with tailorable circularly polarized luminescence. Our finding not only opens a pathway for producing programmable chiroptical micropatterns, but also is highly valuable for deeper understanding of symmetry breaking in enantioselective photochemical reactions.

Suggested Citation

  • Chenlu He & Zeyu Feng & Sizhen Shan & Mengqiao Wang & Xin Chen & Gang Zou, 2020. "Highly enantioselective photo-polymerization enhanced by chiral nanoparticles and in situ photopatterning of chirality," Nature Communications, Nature, vol. 11(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-15082-6
    DOI: 10.1038/s41467-020-15082-6
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