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. Author manuscript; available in PMC: 2014 Apr 3.
Published in final edited form as: J Am Chem Soc. 2013 Mar 26;135(13):5008–5011. doi: 10.1021/ja402490j

FIGURE 1.

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).