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Probing the effect of β-triketonates in visible and NIR emitting lanthanoid complexes
Laura Abad Galán1, Brodie L Reid, Stefano Stagni
1School of Molecular and Life Science, and Curtin Institute for Functional Molecules and Interfaces, Curtin University, Kent Street, Bentley, 6102 WA, Australia. m.massi@curtin.edu.au m.ogden@curtin.edu.au.
Abstract:
An isomorphous series of lanthanoid complexes containing tribenzoylmethanide (tbm) and 1,10-phenanthroline (phen) ligands has been synthesised and structurally characterised. These complexes, formulated as [Ln(phen)(tbm)3] (Ln = Eu3+, Er3+ and Yb3+), were compared with analogous dibenzoylmethanide (dbm) [Ln(phen)(dbm)3] complexes to investigate the effect of changing β-diketonate to β-triketonate ligands on the photophysical properties of the complex. The photophysical properties for the Eu3+ complexes were similar for both systems, whereas a modest enhancement was observed for Yb3+ and Er3+ moving from the dbm to the tbm complexes. A detailed study of the NIR photophysical properties was achieved by adapting the integrating sphere method for the calculation of overall quantum yields in the solid state.
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