Fig. 1. (a) Emission spectra of PF-HQ (20 μM) in common organic solvents. (b) UV-vis absorption of PF-HQ (20 μM) in different solvents (10 μM). Emission spectra of PF-HQ in (c) PBS buffer (10–100 μM, pH 7.4) and (d) HBSS buffer (10–300 μM, pH 7.4).
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