FIGURE 1.
(A) Optical images of hydrogel formed by 3 (0.8% w/v) in water at pH = 7 under normal light, UV (long wavelength) light, and polarized light. (B) Emission (excited at 470 nm) spectrum of the hydrogel in (A).
(A) Optical images of hydrogel formed by 3 (0.8% w/v) in water at pH = 7 under normal light, UV (long wavelength) light, and polarized light. (B) Emission (excited at 470 nm) spectrum of the hydrogel in (A).