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Photoluminescent and magnetic analysis of a family of lanthanide(III) complexes based on diclofenac

Abstract

A family of ten novel isostructural LnIII complexes based on the non-steroidal anti-inflammatory drug diclofenac, of general formula [Ln2(dicl)6(MeOH)2(H2O)2] [LnIII = Pr (1), Nd (2), Sm(3), Eu (4), Tb (5), Dy (6), Ho (7), Er (8), Tm (9), Yb (10)], have been prepared. These complexes consist of centrosymmetric dimers in which each metallic centre is coordinated to three diclofenac ligands as well as water and methanol molecules. Alternating current magnetic measurements of complex 6 show slight SMM behaviour. The evaluation of solid state photophysical properties reveals that the diclofenac ligand is able to sensitize luminescent emission at 10 K of compounds 2, 3, 4, 5, and 6 both in the visible and near-infrared (NIR) regions. Measurements of the decay curves show persistent fluorescence, with lifetimes of nearly 1.5 ms, and temperature stable lifetimes in the case of complex 5. Moreover, the NIR emission of compound 2 may open the way towards applications in the field of fluoroimmunoassays and in vivo detection given the bioactive nature of the diclofenac molecule.

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Publication details

The article was received on 09 Mar 2017, accepted on 16 May 2017 and first published on 16 May 2017


Article type: Paper
DOI: 10.1039/C7NJ00794A
Citation: New J. Chem., 2017, Accepted Manuscript
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    Photoluminescent and magnetic analysis of a family of lanthanide(III) complexes based on diclofenac

    E. Echenique-Errandonea, I. Oyarzabal, J. Cepeda, E. San sebastian, A. Rodriguez-Dieguez and J. M. Seco, New J. Chem., 2017, Accepted Manuscript , DOI: 10.1039/C7NJ00794A

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