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Article Dans Une Revue Chemistry - A European Journal Année : 2022

On-surface synthesis of unsaturated hydrocarbon chains through C-S activation

Résumé

We use an on-surface synthesis approach to drive the homocoupling reaction of a simple dithiophenylfunctionalized precursor on Cu(111). The C-S activation reaction is initiated at low annealing temperature and yields unsaturated hydrocarbon chains interconnected in a fully conjugated reticulated network. High-resolution atomic force microscopy imaging reveals the opening of the thiophenyl rings and the presence of trans-and cis-oligoacetylene chains as well as pentalene units. The chemical transformations were studied by C 1s and S 2p core level photoemission spectroscopy and supported by theoretical calculations. At higher annealing temperature, additional cyclization reactions take place, leading to the formation of small graphene flakes.
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Dates et versions

hal-03712529 , version 1 (04-07-2022)

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Luca Giovanelli, Rémy Pawlak, Fatima Hussein, Oliver Maclean, Federico Rosei, et al.. On-surface synthesis of unsaturated hydrocarbon chains through C-S activation. Chemistry - A European Journal, 2022, ⟨10.1002/chem.202200809⟩. ⟨hal-03712529⟩
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