Short-step synthesis and chiroptical properties of polyaza[5]-[9]helicenes with blue to green-colour emission

Takashi Otani, Takuma Sasayama, Chisaki Iwashimizu, Kyalo Stephen Kanyiva, Hidetoshi Kawai, Takanori Shibata

Research output: Contribution to journalArticle

Abstract

We have developed a two- or three-step synthesis of polyaza[5]-[9]helicenes by consecutive N-H/C-H coupling with a hypervalent iodine reagent. We further evaluated their photophysical properties, and circularly polarized luminescence properties and found that glum values increase with the number of fused rings up to 2.7 × 10-2, which is the highest value among [9]helicenes.

Original languageEnglish
Pages (from-to)4484-4487
Number of pages4
JournalChemical Communications
Volume56
Issue number32
DOIs
Publication statusPublished - 2020 Apr 25

ASJC Scopus subject areas

  • Catalysis
  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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