Figure 4

Fluorescence emission spectra of different concentrations of analyte (l-cysteine) within the sample analyzed by presented optimized procedure. Inset: linear response of calibration plot (Dopamine/l-cysteine ratio = 0.8/0.1, 50 µL polymerization mixture volume, 15 min UV irradiation, λex 376 nm and λem 442 nm).