Fig. 1. The normalized absorption (A) and fluorescence (B) spectra of AIE-Red (10 μM) and AIE-Green (10 μM) in PBS buffer (pH = 7.4, containing 0.5% DMSO). The insets show the optical photographs of these solutions obtained under 365 nm light irradiation. (C and D) Fluorescence spectra of AIE-Red (10 μM, (C)) and AIE-Green (10 μM, (D)) in DMSO/PBS mixtures with different volume fractions of PBS from 0 to 99%. The excitation wavelength was 405 nm for all the fluorescence spectra.
