Fig. 1. (A) Emission spectra of TTB, TTS, and TTA in solvents with different polarities. Concentration: 10 μM; excitation wavelength: 480 nm. (B) Relative PL intensity (I/ITol) of TTB, TTA, and TTS in different solvents, where ITol = PL intensity in toluene and I = PL intensity in other solvents. (C) Fluorescence photographs of TTB, TTA, and TTS in different solvents taken under 365 nm UV illumination.
