Issue 83, 2024

Tailoring helical ends of π-extended [6]heterohelicenes to control optical, and electrochemical features

Abstract

The inherent helical chirality and improved π-stacking capabilities endow helicenes with fascinating photophysical characteristics when decorated with lateral π-extensions. Here, we report the synthesis and physicochemical characterization of expanded hetero[6]helicenes fused with thiadiazole and selenadiazole rings at the helical ends. Comparing these heterohelicenes revealed the impact of the heteroatom-embedded aromatic rings on the excited state and redox features. A small structural variation of the terminal rings from thiadiazole to selenadiazole caused a striking change in the heterohelical nanographenes.

Graphical abstract: Tailoring helical ends of π-extended [6]heterohelicenes to control optical, and electrochemical features

Supplementary files

Article information

Article type
Communication
Submitted
23 Jul 2024
Accepted
23 Sep 2024
First published
24 Sep 2024

Chem. Commun., 2024,60, 11944-11947

Tailoring helical ends of π-extended [6]heterohelicenes to control optical, and electrochemical features

V. Kumar, S. D. Dongre, G. Venugopal, A. Narayanan and S. S. Babu, Chem. Commun., 2024, 60, 11944 DOI: 10.1039/D4CC03707C

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