STUDY ON FERROCENE DERIVATIVES DIFFUSION DYNAMICS IN POLYMER ELECTROLYTE BY SOLID-STATE VOLTAMMETRY

The diffusion rates of seven ferrocene derivatives have been estimated in polyelectrolyte PEG . LiClO4 by using non-steady-state chronoamper ometry. The D-app of ferrocene derivatives increases with temperature, and the dependency of D-app on temperature obeys the Arrhenius equati on. The D-app of ferrocene derivatives decreases with increasing size of electroactive species. The Delta D-app values of D-T>Tm and D-T<Tm increase with increasing size of diffusion species. The dependency of D-app on the size of ferrocene at T < T-m is larger than that at T > T -m in the polyelectrolyte. On the other hand, the diffusion behaviour of ferrocene derivatives is qualitatively analyzed by using cyclic vol tammetry. Copyright (C) 1996 Elsevier Science Ltd