Chiral Binaphthalene Building Blocks for Self-Assembled Nanoscale CPL Emitters

Yu Yu Hsieh, Jing Jong Shyue, Yu Chiang Chao, Ken Tsung Wong*, Dario M. Bassani*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The introduction of biuret hydrogen-bonding sites onto chiral binaphthalene-based chromophores was investigated as a route to sub-micron-sized, vesicle-like aggregates endowed with chiroptical properties. The synthesis was conducted from the corresponding chiral 4,4′-dibromo-1,1′-bis(2-naphthol) via Suzuki–Miyaura coupling to afford luminescent chromophores whose emission spectrum could be tuned from blue to yellow-green through extension of the conjugation. For all compounds, the spontaneous formation of hollow spheres with a diameter of ca. 200–800 nm was evidenced by scanning electron microscopy, along with strong asymmetry in the circularly polarized absorption spectra. For some compounds, the emission also displayed circular polarization with values of glum = ca. 10–3 which could be increased upon aggregation.

Original languageEnglish
Article number3382
Issue number8
Publication statusPublished - 2023 Apr


  • binaphthalene
  • chirality
  • circularly polarized luminescence
  • luminescence
  • vesicles

ASJC Scopus subject areas

  • Analytical Chemistry
  • Chemistry (miscellaneous)
  • Molecular Medicine
  • Pharmaceutical Science
  • Drug Discovery
  • Physical and Theoretical Chemistry
  • Organic Chemistry


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