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Our self-powered vibration sensor system can act as a facile tool for accurately monitoring the structural wellness of constructions.We report herein functional, change metal-free and additive-free (hetero)aryl-aryl coupling reactions promoted by the oxidative electrocoupling of unsymmetrical tetra(hetero)arylborates (TABs) prepared from ligand-exchange reactions on potassium trifluoroarylborates. Exploiting the energy of electrochemical oxidations, this process comp