A novel TEMPO-modified polyaniline electrode, poly(4-(2-aminobenzoyl-oxy)-2,2,6,6-tetramethylpiperidin-1-yloxy) (PAn-TEMPO), was successfully prepared on glassy carbon by electrochemical polymerization in water/acetone. The electrocatalytic property of PAn-TEMPO for oxidation of alcohols was investigated by cyclic voltammetry, in situ FTIR and preparative electrolysis experiments. The PAn-TEMPO performed well, leading to the selective oxidation of alcohols undermild conditions. Various alcohols were efficiently oxidized to their corresponding aldehydes or ketones with excellent conversions and selectivities in water solution or water/acetonitrile solution buffered with sodium carbonate/bicarbonate. (C) 2016 The Electrochemical Society. All rights reserved.