Effect of surface structure of Au(100) electrode on the phase transitions within adsorbed adlayer of coumarin (CUM) in halide electrolytes in the presence of tetrabutylammonium cations (TBAc) was studied by means of cyclic voltammetry and differential capacity measurements. At the nearly unreconstructed surface of Au(100) electrode in chloride and bromide solutions, TBAc induced this transition, while at the reconstructed surface these cations caused a shift of it to more negative potentials. In KI as the supporting electrolyte, such phase transition was not detected at the reconstructed surface, but it was induced at the unreconstructed one. Additionally, new phase transitions in CUM adlayer have been found at the unreconstructed surface in bromide electrolyte, which are, however, completely inhibited by TBAc.

研究了Au（100）电极表面结构对四丁基铵阳离子（TBAc）存在下卤化物电解质中香豆素（CUM）吸附层内相变的影响。在氯化物和溴化物溶液中，Au（100）电极几乎未重建的表面上，TBAc诱导了这种转变，而在重建的表面上，这些阳离子将其转移到更多的负电位上。在作为支撑电解质的KI中，在重建的表面上未检测到这种相变，但是在未重建的表面上诱导了这种相变。此外，在溴化电解质中未重建的表面发现了CUM附加层中的新相变，但是，TBAc完全抑制了这种转变。