Highly photoluminescent europium tetraphenylimidodiphosphinate ternary complexes with heteroaromatic co-ligands. Solution and solid state studies

作者：Pietraszkiewicz Marek^*; Pietraszkiewicz Oksana; Karpiuk Jerzy; Majka Alina; Dutkiewicz Grzegorz; Borowiak Teresa; Kaczmarek Anna M; Van Deun Rik

来源：Journal of Luminescence, 2016, 170: 411-419.

DOI：10.1016/j.jlumin.2015.10.033

• Tetraphenylimidodiphosphinate
• Photoluminescence
• Europium
• Ternary complexes
• Heterocyclic co-ligands
• Solid-state photoluminescence

Tetraphenylimidodiphosphinate (tpip) forms neutral 3:1 complexes with lanthanide ions. These complexes can accommodate one ancillary planar heterocyclic ligand to complement their coordination sphere of Eu3+ to coordination number 8. Several co-ligands were tested to form new complexes: 1,10-phenanthroline, bathophenanthroline, 2,4,6-tris(2-pyridyl)-1,3,5-triazine, dipyrido[3,2-E2',3'-h]quinoxaline and 2,2':6',2 ''-terpyridine. The addition of heterocyclic N,N-bidentate co-ligands to the coordination sphere results in a dramatic (by a factor of 45-50) luminescence enhancement of the parent Eu (tpip)(3). The solid-state measurements confirmed that the ancillary ligands strongly increased the photoluminescence quantum yield (PLQY) of the investigated complexes.

• 出版日期2016-2