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Merging polyacenes and cationic helicenes: from weak to intense chiroptical properties in the far red region

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Abstract

A series of helical tetracenes and pentacenes was synthesized from cationic [6] and [4]helicene precursors. These colorful acenes fluoresce in the far red region. While [4]helicene-based pentacenes exhibit chiroptical properties mainly in the UV region, [6]helicene-derived tetracenes show enhanced ECD in the visible range, in addition to clear CPL responses. This difference is rationalized using first principles.

Graphical abstract: Merging polyacenes and cationic helicenes: from weak to intense chiroptical properties in the far red region

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Article information


Submitted
25 Oct 2019
Accepted
05 Dec 2019
First published
05 Dec 2019

This article is Open Access
All publication charges for this article have been paid for by the Royal Society of Chemistry

Chem. Sci., 2020, Advance Article
Article type
Edge Article

Merging polyacenes and cationic helicenes: from weak to intense chiroptical properties in the far red region

R. Duwald, J. Bosson, S. Pascal, S. Grass, F. Zinna, C. Besnard, L. Di Bari, D. Jacquemin and J. Lacour, Chem. Sci., 2020, Advance Article , DOI: 10.1039/C9SC05407C

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