Complex Formation of Curium with Adenosine 5’-Triphosphate (ATP) Studied by TRLFS

We investigated for the first time the complex formation of curium(III) with adenosine 5’-triphosphate (ATP) by time-resolved laser fluorescence spectroscopy (TRLFS). The interaction between soluble species of curium(III) with ATP was studied at trace Cm(III) concentrations (10-7 M), at different concentrations of ATP and at different pH using 0.154 M NaCl as background electrolyte. Predominant 1:1 complex formation reactions were observed. Taking the dissociation of H4ATP into consideration, we found evidence for the existence of three Cm – ATP species: CmH2ATP+, CmHATP and CmATP-.