A study of core electron binding energies in technetium-99m complexes by internal conversion electron spectroscopy

Abstract

Core electron binding energies in a series of 99mTc complexes have been studied by internal conversion electron spectroscopy (ICES) in a conventional x-ray photoelectron spectrometer. In both 3d and 3p regions, a chemical shift of about 1 eV is observed per unit increase in oxidation state. The role of ICES in characterizing radiopharmaceutical agents is illustrated with studies of some novel 99mTcphosphine complexes that have been developed for myocardial perfusion imaging.