Control of Dynamic Chirality in Donor‐Acceptor Fluorophores - Archive ouverte HAL
Article Dans Une Revue Angewandte Chemie International Edition Année : 2024

Control of Dynamic Chirality in Donor‐Acceptor Fluorophores

Max Coehlo
Ludovic Favereau

Résumé

Recently, the control of dynamic chirality has emerged as a powerful strategy to design chiral functional materials. In this context, we describe herein a molecular design in which a tethered configurationally stable binaphthyl chiral unit efficiently controls the dynamic chirality of donor‐acceptor fluorophores, involving diverse indolocarbazoles as electron donors and terephthalonitrile as an electron acceptor. The high conformational discrimination in such a molecular system suggested by density functional theory calculations is experimentally probed using electronic and vibrational circular dichroism and confirmed by the crystallization of these chiral molecules in gel and their single crystal X‐ray diffraction analysis. This work also highlights the positive effect of the configurationally stable chiral unit on the magnitude of the dissymmetry factors of the active dynamically chiral fluorophores, both in ground and excited states, through chiral perturbation.
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Dates et versions

hal-04822738 , version 1 (06-12-2024)

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Max Coehlo, Lucas Frédéric, Laurélie Poulard, Nawal Ferdi, Lilian Estaque, et al.. Control of Dynamic Chirality in Donor‐Acceptor Fluorophores. Angewandte Chemie International Edition, 2024, pp.e202414490. ⟨10.1002/anie.202414490⟩. ⟨hal-04822738⟩
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