Study of Metal-1,10-Phenanthroline Complex Equilibria by Potentiometric Measurements

Abstract

The interaction of Sc(III), Y(III), and La(III) ions with 1,10-phenanthroline (Phen) has been investigated, using the potentiometric method at 25 ± 0.1• C and I = 0.10 M KNO 3 . Collected potentiometric data were processed by the "BEST" software program to establish the complexation model for each system. SPE software program was used to evaluate the concentration distributions of the species formed in solution. The stability constants for the binary complexes increased as the ionic radii of the metal cations decreased.

Nucleotide/Tb3+ coordination polymer as a luminescent nanosensor: synthesis and sensing of iron(ii) in human serum

“…We attributed the uorescence quenching of Tb-ADP-Phen by Fe 2+ to the formation of a Fe(Phen) 3 complex due to a higher stability of Fe(Phen) 3 than Tb(Phen) 3 . 34,35 The formation of the Fe(Phen) 3 complex is supported by the spectroscopic data. As shown in Fig.…”