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. Author manuscript; available in PMC: 2010 Jul 8.
Published in final edited form as: J Am Chem Soc. 2009 Jul 8;131(26):9198–9200. doi: 10.1021/ja903685b

Figure 4.

Figure 4

Normalized emission (ex. 690 nm) of LS479 and absorption spectra of Cu-DTPA and Ni-DTPA and Zn-DTPA. (Abs. max of Zn-DTPA complex was <450 nm). Substantial overlap between LS479 and copper suggests that energy transfer is a possible explanation for quenching. Note the lack of overlap with zinc and nickel.