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. 2018 Jun 26;18(7):2042. doi: 10.3390/s18072042

Figure 6.

Figure 6

(Left) Absorption spectra of 5 at different concentrations (0.5, 5, 10, 25, 50, 100 μM) in HEPES buffer solution pH 7.4 (contain 0.8% MeCN). The inset displays the linear relationship between the absorbances at 323 nm and the concentrations of 5. (Right) Fluorescence spectra of 5 (excited at 350 nm) at different concentrations (0.5, 5, 10, 25, 50, 100 μM) in HEPES buffer solution pH 7.4 (contain 0.8% MeCN). The inset displays the linear relationship between the emission intensities at 393 nm and the concentrations of 5.