Abstract
A facile immobilization method of vinyl groups onto glassy carbon is described using ω-bromo-1-alkenes as model substrates. The process is based on the cathodic charging of the carbon electrode at E < − 2 V vs. Ag/AgCl performed in organic polar solvents containing tetraalkylammonium salts. This cathodic charging of carbons permits the SN displacement of the bromide out of bromo-alkenes and leads to a thorough surface coating with a thin layer of unsaturated chain. The surfacial level of vinylation (~ 5 × 10− 9 mol cm− 2) was efficiently estimated by means of bromine and iodine indexes. Additionally, the efficiency of this halogen addition reaction to the alkene functional group was confirmed by EDS measurements