Related affinities of different mononucleosides and mono nucleotides towards Pr (III) and Nd (III) in aquated organic solvents explored through 4f-4f transition spectral analysis.

Spectroscopic properties of Pr (III) and Nd (III)-mono nucleosides and nucleotides in aquated organic solvents have been investigated through absorption difference and comparative absorption spectroscopy involving 4f-4f transitions. Absorption intensity analysis, has shown that minor coordination changes in structure and chemical make-up of these structurally related ligands induced substantial changes in the intensities of 4f-4f bands and their perturbation has been reflected through oscillator strength, Judd-Ofelt intensity parameters (T(lambda); lambda = 2, 4, 6). The results show that different nucleosides and nucleotides bind Pr (III)/Nd (III) with different degrees of relative affinities.