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A) Fluorescence emission spectrum of pyrene (6.2× 10-5 M) in polymer solution of 10-3 mg/ml (….) (i.e., below the CMC) and 10-1 mg/ml (—) (i.e., above the CMC); B) Plot of the intensity ratio (II/IIII) of pyrene emission spectra as a function of PCL-PEG-PCL concentration in logarithmic scale
