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Issue 28, 2016
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Protonation-induced red-coloured circularly polarized luminescence of [5]carbohelicene fused by benzimidazole

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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.

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

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Supplementary files

Article information


Submitted
30 Apr 2016
Accepted
07 Jun 2016
First published
09 Jun 2016

Org. Biomol. Chem., 2016,14, 6738-6743
Article type
Paper

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

H. Sakai, T. Kubota, J. Yuasa, Y. Araki, T. Sakanoue, T. Takenobu, T. Wada, T. Kawai and T. Hasobe, Org. Biomol. Chem., 2016, 14, 6738
DOI: 10.1039/C6OB00937A

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