Research Article

Synthesis and Photo- and Ionochromic and Spectral-Luminescent Properties of 5-Phenylpyrazolidin-3-one Azomethine Imines

Figure 3

Electronic absorption spectra of 4 in acetonitrile () before (1) and after addition of metal cations (in the form of perchlorates) Zn2+ (2), Ni2+ (3), Hg2+ (4), and Со2+ (5) (); inset: fluorescence before (1) and after addition of Hg2+ (2).