Figure 5
From: A colorimetric chemosensor for Cu2+ ion detection based on an iridium(III) complex

Absorbance of 5 μM of complexes (a) 1, (b) 2 and (c) 3 at 555 nm in the presence of both 10 μM of Cu2+ and 25 μM of various metal ions (1:1 ACN-Tris, pH 7.0).