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Dynamically stable and amplified circularly polarized excimer emission regulated by solvation of chiral co-assembly process

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  • Yuxia Zhang

    (Nanjing University)

  • Hang Li

    (Nanjing University)

  • Zhongxing Geng

    (Nanjing University
    Nanjing University)

  • Wenhua Zheng

    (Nanjing University)

  • Yiwu Quan

    (Nanjing University)

  • Yixiang Cheng

    (Nanjing University)

Abstract

Chiral supramolecular assembly has been assigned to be one of the most favorable strategies for the development of excellent circularly polarized luminescent (CPL)-active materials. Herein, we report our study of an achiral boron-containing pyrene (Py)-based chromophore (PyBO) as a circularly polarized excimer emission (CPEE) dye induced by chiral co-assemblies containing chiral binaphthyl-based enantiomers (R/S-M). Chiral co-assembly R/S-M-(PyBO)4 fresh film spin-coated from toluene solution can exhibit orderly nanofibers and strong green CPEE (λem = 512 nm, gem = ±0.45, ΦFL = 51.2 %) resulting from an achiral PyBO excimer. In contrast, only a very weak blue CPL was observed (λem = 461 nm, gem = ± 0.0125, ΦFL = 19.0 %) after 187 h due to PyBO monomer emission as spherulite growth. Interestingly, this kind of chiral co-assembly R-M-(PyBO)4-T film from tetrahydrofuran (THF) solution retains uniform morphology and affords the most stable and strongest CPEE performance (λem = 512 nm, gem = + 0.62, ΦFL = 53.3 %) after 10 days.

Suggested Citation

  • Yuxia Zhang & Hang Li & Zhongxing Geng & Wenhua Zheng & Yiwu Quan & Yixiang Cheng, 2022. "Dynamically stable and amplified circularly polarized excimer emission regulated by solvation of chiral co-assembly process," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-32714-1
    DOI: 10.1038/s41467-022-32714-1
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    1. Gaolei Zhan & Zhen-Feng Cai & Karol Strutyński & Lihua Yu & Niklas Herrmann & Marta Martínez-Abadía & Manuel Melle-Franco & Aurelio Mateo-Alonso & Steven De Feyter, 2022. "Observing polymerization in 2D dynamic covalent polymers," Nature, Nature, vol. 603(7903), pages 835-840, March.
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