Accelerating Effect of NaNO₂ on Organic Polymer Plating of 6-diallylamino-1, 3, 5-triazine-2, 4-dithiols

Abstract

Organic polymer plating properties of 6-diallylamino-1, 3, 5-triazine-2, 4-dithiol monosodium (DAN) were studied for NaNO₂ supporting electrolytes. Supporting electrolytes cause polymer film to form or not. NaNO₂ electrolytes particularly accelerated the formation rate of polymer plating. The accelerating effect of NaNO₂ was confirmed comparing plating potentials in the presence of NaNO₂ and NaCO₃. NO₂^- anions are electrochemically oxidized to yield NO₂·radicals that react with DAN to yield thiyl radicals. DAN thilyl radicals between molecules, yielding disulfide bonds that grows into polymer films. Organic polymer plating films contained disulfide and monosulfide bonds produced by the reaction between allyl groups and thiyl radicals and network chains.