Direct Modification of a Gold Electrode with Aminophenyl Groups by Electrochemical Reduction of in Situ Generated Aminophenyl Monodiazonium Cations

摘要: Aminophenyl groups were electrochemically grafted at the surface of a gold electrode by reduction in situ generated aminophenyl monodiazonium cations. The cations reaction 1 equiv p-phenylenediamine with sodium nitrite 0.5 M HCl, and their formation was confirmed gas chromatography−mass spectrometry. presence demonstrated electrochemistry infrared X-ray photoelectron spectroscopies. an inhomogeneous multilayered film also evidenced atomic force microscopy. Furthermore, present reacted trifluoroacetic acid anhydride dry tetrahydrofuran yield about 75% for trifluoroacetylation amine groups.