Fig. 2.

Kinetics of absorbance changes probed at 450 nm following 3.2-mJ, 425-nm pulsed laser excitation for RuP- and 1-derivatized FTO|nanoITO/TiO₂ electrodes immersed in argon-degassed, aqueous pH 4.6 solutions with 0.5 M LiClO₄ and 20 mM acetate/acetic acid buffer at 22 ± 1 °C. The first 10 µs displayed here were collected in a separate experiment from the longer timescale (i.e., out to 400 µs) data for improved data quality. Both data sets are presented together here (dark gray, RuP; black, 1) with the fits shown in red and blue, respectively.