Abstract
A new methodology has been applied to drug release studies. A conductive polymer film was used as a matrix for drug incorporation. The characterization of the polymer films has been obtained byin situmonitoring of the mass change by a quartz crystal microbalance in conjunction with cyclic voltammetry. The electrochemical quartz crystal microbalance (EQCM) with its excellent sensitivity allowed direct measurement of the amount of the drug released when the potential of the film was changed. New information on ion dynamics under thein situconditions was obtained. The release of a neuroleptic drug, chlorpromazine (CPZ), from a composite polypyrrole/melanin film upon electrical stimulation has been studied.
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