Issue 32, 2020

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

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.

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

Supplementary files

Article information

Article type
Communication
Submitted
14 Feb 2020
Accepted
09 Mar 2020
First published
10 Mar 2020

Chem. Commun., 2020,56, 4484-4487

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

T. Otani, T. Sasayama, C. Iwashimizu, K. S. Kanyiva, H. Kawai and T. Shibata, Chem. Commun., 2020, 56, 4484 DOI: 10.1039/D0CC01194K

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