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. 2020 Mar 5;10:4166. doi: 10.1038/s41598-020-60954-y

Figure 1.

Figure 1

Solvent-dependent photophysical properties of NBD-Bu: (a) normalized UV-Vis. spectra with the varying solvent polarity, (b) normalized fluorescence spectra, (c) time-resolved fluorescence decay profile and (d) emission maxima vary linearly (R2 = 0.82) with solvent polarity parameter. Arrows indicate the direction of low to high solvent polarity.