AN EFFICIENT METHOD OF DETERMINING DIFFUSION-COEFFICIENTS USING EIGENFUNCTION-EXPANSIONS

A method using eigenfunction expansions has been implemented to determ ine the diffusion coefficients of electroactive species, The method ha s been successfully applied to the process of single-electron oxidatio n of N,N,N',N'-tetramethyl-p-phenylenediamine (TMPD), The results obta ined by the method agree very well with those from the well establishe d finite difference algorithm and are more reliable in general than th e conventional Levich equation, The computer code developed is versati le and efficient; the method could be of wide application.