给你个例子：To estimate the dye adsorbed amount on the TiO2 films, the sensitized electrode was separately immersed into a 0.1 M NaOH solution in a mixed solvent (water: ethanol=1:1), which resulted in the desorption of N719. The absorbance of the resulting solution was measured by a UV-3600 UV-vis spectrophotometer (Shimadzu, Japan). The dye adsorbed amount was determined by the molar extinction coefficient of 1.41 × 104 dm3 mol-1 cm-1 at 515 nm as reported previously
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