882567-22-8

Basic information

• Product Name: Eu(2-thenoyltrifluoroacetonate)3(bis(2-(diphenylphisphino)phenyl)ether oxide)
• CAS NO: 882567-22-8
• Molecular Weight: 1386.06
• Mol File: 882567-22-8.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: Eu(2-thenoyltrifluoroacetonate)3(bis(2-(diphenylphisphino)phenyl)ether oxide)(CAS DataBase Reference)
• NIST Chemistry Reference: Eu(2-thenoyltrifluoroacetonate)3(bis(2-(diphenylphisphino)phenyl)ether oxide)(882567-22-8)
• EPA Substance Registry System: Eu(2-thenoyltrifluoroacetonate)3(bis(2-(diphenylphisphino)phenyl)ether oxide)(882567-22-8)

Safety Data

• Hazardous Substances Data: 882567-22-8(Hazardous Substances Data)

Upstream product

• 808142-23-6 bis[2-(diphenylphosphino)phenyl] ether oxidebis[2-(diphenylphosphino)phenyl] ether oxide 
• 66180-39-0 3-hydroxy-1-(thiophen-2-yl)-4,4,4-trifluorobut-2-en-1-one 

Relevant articles and documents

Application of chelate phosphine oxide ligand in eu111 complex with mezzo triplet energy level, highly efficient photoluminescent, and electroluminescent performances

The chelate phosphine oxide ligand bis(2-(diphenylphosphino)phenyl) ether oxide (DPEPO) was used as a unit neutral ligand to prepare the complex Eu(TTA)3(DPEPO) 1 (TTA = 2-thenoyltrifluoroacetonate). Compound 1 has a photoluminescence (PL) quantum yield of 55.3%, which is more than the twice of the PL quantum yield of Eu(TTA)3(TPPO)2 (TPPO = triphenylphosphine oxide). Investigation indicated that DPEPO in 1 has the mezzo first triplet excited energy level (T1) between the first singlet excited energy level (S1) and T1 of TTA, which may support one more additional energy transfer routines from the T1 energy level of DPEPO to that of TTA, and consequently results in the improvement of energy transfer in the EuIII complex. DPEPO forms a complex with a more rigid and compact structure that can improve energy transfer between ligands and the center EuIII ion, support the higher saturation level by the coordinating ability of the oxygen atom in the ether moiety, and consequently enhance the PL intensity and efficiency of the corresponding EuIII complex. The multilayered electroluminescent (EL) device of 1 used as the red dopant exhibited an impressive brightness of 632 cd m-2 at 25 V. The device had the excellent voltage-independent spectral stability with an emission peak at 615 nm. To the best of our knowledge, this luminescence is the brightest emission among Eu complexes with phosphine oxide ligands. The maximum external quantum yield (ηext) of 2.89% and the maximum current and power efficiency of 4.58 cd A-1 and 2.05 Im W-1 were achieved at a low turn-on voltage of 7 V and current density of 0.021 mA cm -2. These properties demonstrate that the chelate phosphine oxides ligand DPEPO can not only be favorable to form the rigid and compact complex structure and increase the efficiency of devices, but also reduce the ability of the formation of exciplex. DPEPO shows much better performance compared with the ordinary phosphine oxide ligand triphenylphosphine oxide.