Abstract The adsorption of 4-pentadecyl-pyridine (C15-4-Py) onto the Au (111) electrode was investigated with the help of electrochemical and spectroscopic techniques. Electrochemical studies demonstrated that a film of C15-4-Py spreads onto the metal surface at potentials close to the potential of zero charge (pzc) and desorbs from the electrode surface at potentials which are sufficiently negative. The character of C15–4-Py adsorption ...