Probing the effect of β-triketonates in visible and NIR emitting lanthanoid complexes
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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 properites was achieved by adapting the integrating sphere method for the calculation of overal quantum yields in the solid state.
Galán , L , Reid , B , Stagni , S , Sobolev , A , Skelton , B , Moore , E , Hanan , G , Zysman-Colman , E , Ogden , M & Massi , M 2018 , ' Probing the effect of β-triketonates in visible and NIR emitting lanthanoid complexes ' , Dalton Transactions , vol. 47 , no. 24 , pp. 7956-7964 . https://doi.org/10.1039/C8DT00945G
© 2018 the Authors. This work has been made available online in accordance with the publisher’s policies. This is the author created accepted version manuscript following peer review and as such may differ slightly from the final published version. The final published version of this work is available at https://doi.org/ 10.1039/C8DT00945G
DescriptionThis research was partially supported by the Australian Research Council's Discovery Projects funding scheme (project DP17010189), and a Royal International Exchanges Grant. L.A.G and B.L.R. thanks Curtin University for the Australian Postgraduate Award and the University of Montreal (UdeM). G.S.H. thanks the Natural Sciences and Engineering Research Council of Canada and the Direction des Relations Internationales of UdeM. E.Z.-C. thanks the EPSRC (EP/M02105X/1) for support.
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