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. 2019 Apr 22;24(8):1592. doi: 10.3390/molecules24081592

Figure 4.

Figure 4

(a) Fluorescence spectra of 1.0 µM intermediate 9 and (b) probe B at 635 nm excitation upon gradual addition of Zn(II) from 0.1 µM to 2.0 µM to 10 mM HEPES buffer solutions (pH 7.0) containing 1.0 μM probe B.