Synthesis of a Calix[4]arene-Monodiazonium Salt for Surface Modification

Volodymyr Malytskyi (1) , Ludovic Troian-Gautier (1) , Alice Mattiuzzi (1) , Sarah Lambotte (1) , Benedetta Cornelio (1) , Corinne Lagrost (2) , Ivan Jabin (1)

1 ULB - Université libre de Bruxelles
2 ISCR - Institut des Sciences Chimiques de Rennes

Reduction of calix[4]arene‐tetradiazonium salts at the vicinity of a surface, notably a carbon surface, leads to the formation of a dense and robust covalently bound monolayer. To expand the versatility of this unique methodology, the efficient synthesis of a calix[4]arene bearing a single diazonium group and thus a single anchoring point was achieved. The introduction of the diazonium group was developed through an original approach involving a copper‐catalyzed reaction for the preparation of an intermediate azido‐calixarene. The grafting ability of the calix[4]arene‐monodiazonium cation was evaluated by investigating its electrochemical reduction at glassy carbon electrodes. Studies of the blocking properties of the modified surfaces toward redox probes evidenced the formation of compact covalently bound layers at the carbon substrates, opening interesting perspectives in the field of surface modification by calixarene‐based diazonium salts.

Keywords: Synthesis design; Surface chemistry; Calixarenes; Diazonium salts; Electrodeposition

Domains: Chemical Sciences; Organic chemistry

Volodymyr Malytskyi, Ludovic Troian-Gautier, Alice Mattiuzzi, Sarah Lambotte, Benedetta Cornelio, et al.. Synthesis of a Calix[4]arene-Monodiazonium Salt for Surface Modification. European Journal of Organic Chemistry, 2018, 2018 (46), pp.6590-6595. ⟨10.1002/ejoc.201801253⟩. ⟨hal-01943882⟩