Article Dans Une Revue Angewandte Chemie International Edition Année : 2021

Stabilization of an Enantiopure Sub‐monolayer of Helicene Radical Cations on a Au(111) Surface through Noncovalent Interactions

Michela Lupi
Giovanni Vinai
Stefano Menichetti
Caterina Viglianisi

Résumé

Abstract In the past few years, the chirality and magnetism of molecules have received notable interest for the development of novel molecular devices. Chiral helicenes combine both these properties, and thus their nanostructuration is the first step toward developing new multifunctional devices. Here, we present a novel strategy to deposit a sub‐monolayer of enantiopure thia[4]helicene radical cations on a pre‐functionalized Au(111) substrate. This approach results in both the paramagnetic character and the chemical structure of these molecules being maintained at the nanoscale, as demonstrated by in‐house characterizations. Furthermore, synchrotron‐based X‐ray natural circular dichroism confirmed that the handedness of the thia[4]helicene is preserved on the surface.

Dates et versions

hal-05321418 , version 1 (19-10-2025)

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Niccolò Giaconi, Andrea Luigi Sorrentino, Lorenzo Poggini, Michela Lupi, Vincent Polewczyk, et al.. Stabilization of an Enantiopure Sub‐monolayer of Helicene Radical Cations on a Au(111) Surface through Noncovalent Interactions. Angewandte Chemie International Edition, 2021, 60 (28), pp.15276-15280. ⟨10.1002/anie.202103710⟩. ⟨hal-05321418⟩
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