Trivalent lanthanide ions, Ln(III), comprise a unique photochemical system in which f-f intrashell transitions result in emissions in the visible to NIR range of the electromagnetic spectrum. These transitions are selection rule forbidden, and thus sensitization of the ion toward energy absorption is required for significant intensity emissions. In this study, a novel prophyrin-based ligand is synthesized which can effectively bind Ln(III) via oxamate functional arms and non-radiatively transfer energy absorbed by the porphyrin ring to the ion. Each of four atropoisomers of meso-tetraphenyloxamatoporphyrin were synthesized and characterized. Their ability to act as effective lanthanide sensitizers and potential for study of molecular magnetic and electrical properties are discussed.

Synthesis of porphyrin-based organic ligands for sensitization of trivalent lanthanide ions

243rd National Meeting (2012)

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