1-Methyl-1,10-phenanthrolin-2(1H)-one (L) as a ligand to Eu(III): Crystal structure and luminescent properties of [Eu(L)3(NO3)3]

A new coordination compound of Eu(III) with 1-methyl-1,10-phenanthroline-2(1H)-one (L) as a ligand has been synthesized and characterized using infrared spectroscopy, elemental analysis and single crystal X-ray diffraction. The structure contains isolated [Eu(L)3(NO3)3] molecules interacting through extensive π-stacking. Photoluminescence studies demonstrate that the complex shows line-like emission characteristic of Eu(III) when excited in the ligand-centered absorption bands, with a quantum yield of 22% and a lifetime of 0.74 ms.

Graphical abstractPhotoluminescence studies of a new coordination compound of Eu(III) with 1-methyl-1,10-phenanthroline-2(1H)-one (L) as a ligand demonstrate that the complex shows line-like emission characteristic of Eu(III) when excited in the ligand-centered absorption bands, with a quantum yield of 22% and a lifetime of 0.74 ms.Figure optionsDownload full-size imageDownload as PowerPoint slide