Time differential SPR kinetic

Time differential SPR kinetic curve and cyclic voltammogram.63... 

Iwasaki et al. reported that by using the simple system of time differential SPR data (A0/At), a Faradaic current behavior can be observed based on the same potential dependence behavior with the voltammetric currents [22]. Figure 6 shows the time differential SPR kinetic... 

Fig. 6 The time differential SPR kinetic curve (dR/dt) as a function of potential cycling between -0.2 and 1.0 V at a scan rate of 20 mVs and the cyclic voltammogram of 1st cycle (a), 2nd cycle (b) and 5th cycle (c).

However, there is no relation below ca. 0.4 V between the cyclic voltammograms and time differential SPR kinetic reflectivity curves in all cycles. To further probe this behavior, we measured the scattered light intensity enhanced by SPR from the polyaniline/electrolyte interface during the electropolymerization. Figure 7 shows the angular dependence of the measured reflectivity and scattered light intensity from the substrate/gold/electrolyte system before the electropolymerization. 

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