Protonation-induced red-coloured circularly polarized luminescence of [5]carbohelicene fused by benzimidazole

Hayato Sakai, Takako Kubota, Junpei Yuasa, Yasuyuki Araki, Tomo Sakanoue, Taishi Takenobu, Takehiko Wada, Tsuyoshi Kawai, Taku Hasobe

Research output: Contribution to journalArticle

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Abstract

Benzimidazole-fused [5]carbohelicene ([5]HeliBI) was newly synthesized to examine the spectroscopic and chiroptical properties. The reversible protonation and deprotonation processes of [5]HeliBI were successfully investigated using 1H NMR, absorption and fluorescence spectral measurements. We also confirmed the circularly polarized luminescence of protonated [5]HeliBI (H+-[5]HeliBI). This is the first observation of red-coloured CPL of a helicene derivative.

Original languageEnglish
Pages (from-to)6738-6743
Number of pages6
JournalOrganic and Biomolecular Chemistry
Volume14
Issue number28
DOIs
Publication statusPublished - 2016

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capillary pumped loops
Deprotonation
Protonation
Luminescence
Fluorescence
Nuclear magnetic resonance
Observation
luminescence
Derivatives
fluorescence
nuclear magnetic resonance
benzimidazole
Proton Magnetic Resonance Spectroscopy

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Biochemistry

Cite this

Protonation-induced red-coloured circularly polarized luminescence of [5]carbohelicene fused by benzimidazole. / Sakai, Hayato; Kubota, Takako; Yuasa, Junpei; Araki, Yasuyuki; Sakanoue, Tomo; Takenobu, Taishi; Wada, Takehiko; Kawai, Tsuyoshi; Hasobe, Taku.

In: Organic and Biomolecular Chemistry, Vol. 14, No. 28, 2016, p. 6738-6743.

Research output: Contribution to journalArticle

Sakai, Hayato ; Kubota, Takako ; Yuasa, Junpei ; Araki, Yasuyuki ; Sakanoue, Tomo ; Takenobu, Taishi ; Wada, Takehiko ; Kawai, Tsuyoshi ; Hasobe, Taku. / Protonation-induced red-coloured circularly polarized luminescence of [5]carbohelicene fused by benzimidazole. In: Organic and Biomolecular Chemistry. 2016 ; Vol. 14, No. 28. pp. 6738-6743.
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