Characterization of Dimethoxybenzene Isomers and 2,2'-dihydroxy-4,4'-dimethoxybenzophenone by Voltammetry in Acetonitrile, Allyl Alcohol and Mesityl Oxide, Effect of Electrode Size.

The electrochemistry of dimethoxybenzene isomers and 2,2'-dihydroxy-4,4'-dimethoxybenzophenone is discussed in this paper concerning their electrooxidation in acetonitrile, allyl alcohol and mesityl oxide. The voltammograms of 1,2- and 1,4-isomers were reproducible in each solvent, only the 1,3-isomer fouled the platinum macroelectrode. In case of 2,2'-dihydroxy-4,4'-dimethoxybenzophenone a low electronically conducting film was formed in all of the investigated solvents. In mesityl oxide, the growing film showed significant adsorption capability towards the substrate molecules. Microelectrode studies shed light to interesting phenomena due to the increased mass transport to the electrode surface, in case of dimethoxybenzenes leading to more conducting polymers. The specially formed film from 2,2'- dihydroxy-4,4'-dimethoxybenzophenone demonstrated its adsorption capability towards selected compounds. [ABSTRACT FROM AUTHOR]