Helical Oligonaphthodioxepins Showing Intense Circularly Polarized Luminescence (CPL) in Solution and in the Solid State

Kazuto Takaishi, Takahiro Yamamoto, Sakiko Hinoide, Tadashi Ema

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

A series of oligonaphthodioxepins was synthesized, revealing a helically arranged octamer, (R,R,R,R,R,R,R)-3, which showed intense circularly polarized luminescence (CPL) both in solution and in the solid state. The fluorescence quantum yields (ΦFL) in solution and in the solid state were 0.90 and 0.22, respectively, and the glum values in solution and in the solid state were +2.2×10−3 and +7.0×10−3, respectively. This is one of the highest solid-state CPL glum values yet reported. The high ΦFL and glum values were due to the rigidity, as well as to the fact that (R,R,R,R,R,R,R)-3 was a non-planar molecule. Moreover, (R,R,R,R,R,R,R)-3 was highly stable both chemically and stereochemically.

Original languageEnglish
Pages (from-to)9249-9252
Number of pages4
JournalChemistry - A European Journal
Volume23
Issue number39
DOIs
Publication statusPublished - Jul 12 2017

Keywords

  • axial chirality
  • chiroptical property
  • circularly polarized luminescence
  • helical structures

ASJC Scopus subject areas

  • Chemistry(all)

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