Photoluminescent Dinuclear Lanthanide Complexes with Tris(2-pyridyl)carbinol Acting as a New Tetradentate Bridging Ligand

A tripodal ligand, tris(2-pyridyl)carbinol, affords a novel tetradentate
coordination mode in homodinuclear lanthanide complexes, which
exhibit remarkably short distances between metal ions. The strong
luminescences of Eu(III) and Tb(III) complexes with the ligand
demonstrate that the ligand has a suitable excited state for energy
transfer from the ligand to the Eu(III) and Tb(III) centers,
respectively.