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. Author manuscript; available in PMC: 2012 Dec 26.
Published in final edited form as: Org Biomol Chem. 2010 Sep 6;8(23):5431–5441. doi: 10.1039/c0ob00482k

Fig. 8.

Fig. 8

Emission spectra of (A) 2a (2.9 μM) in CH3 CN (λex = 340 nm) upon addition of ZnCl2 (0–33 μM) and (B) 2b (1.9 μM) in CH3 CN (λex = 430 nm) upon addition of ZnCl2 (0–51 μM). The spectra that were collected at the beginning and the end of a titration experiment are coded blue and red, respectively.