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. Author manuscript; available in PMC: 2013 Oct 24.
Published in final edited form as: J Am Chem Soc. 2012 Oct 15;134(42):17372–17375. doi: 10.1021/ja307098z

Figure 3.

Figure 3

Comparison of emission spectra of 1 at pH 4.4 (solid line) and pH 7.4 (dashed line) (0.5 mM 1, 50 mM citrate, 50 mM phosphate, λex = 395 nm). Arrows point to peaks that may result from an second Eu(III) environment.