Azahelicene-Fused BODIPY Analogues Showing Circularly Polarized Luminescence

Chihiro Maeda, Keiji Nagahata, Takuma Shirakawa, Tadashi Ema

Research output: Contribution to journalArticlepeer-review

61 Citations (Scopus)


Helical carbazole-based BODIPY analogues were readily synthesized via aza[7]helicenes. The structures of azahelicene-incorporated BF2 dyes were elucidated by x-ray diffraction analysis. DFT calculations revealed that the π-conjugated system expanded from the helicene moiety to the BODIPY framework. The azahelicene-fused boron complexes showed the Cotton effects and the circularly polarized luminescence (CPL) in the visible region. Furthermore, an axially chiral binaphthyl group was attached to the helically chiral dyes, which enhanced the chiroptical properties.

Original languageEnglish
Pages (from-to)7813-7817
Number of pages5
JournalAngewandte Chemie - International Edition
Issue number20
Publication statusPublished - May 11 2020


  • carbazoles
  • circularly polarized luminescence
  • dyes
  • helicenes

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)


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