15522-71-1

Usage

Uses

Used in Analytical Chemistry:
Tris(2,2,6,6-tetramethyl-3,5-heptanedionato)europium(III) is used as an NMR (Nuclear Magnetic Resonance) shift reagent for improving the resolution and accuracy of NMR spectroscopy. This application is crucial in the identification and characterization of various organic and inorganic compounds, as well as in the determination of their molecular structures.
Used in Optoelectronics:
In the field of optoelectronics, Tris(2,2,6,6-tetramethyl-3,5-heptanedionato)europium(III) is used as a doping agent in Gallium Nitride (GaN) light-emitting diodes (LEDs). Its incorporation into the GaN material leads to improved luminescence properties, which can enhance the efficiency and performance of LEDs in various applications, such as display technology, lighting, and communication systems.

InChI:InChI=1/3C11H20O2.Eu/c3*1-10(2,3)8(12)7-9(13)11(4,5)6;/h3*7,12H,1-6H3;/q;;;+3/p-3/b3*8-7-;

Upstream product

• 1118-71-4 2,2,6,6-tetramethylheptane-3,5-dione 
• 499204-17-0 [tris(dipivaloylmethanato)diaqua]Eu(III) 

Relevant academic research and scientific papers

Role of the ancillary ligand N,N-dimethylaminoethanol in the sensitization of EuIII and TbIII luminescence in dimeric β-diketonates

Two types of dimeric complexes [Ln2(hfa) 6(μ2-O(CH2)2NHMe 2)2] and [Ln(thd)2(μ2, η2O(CH2)2NMe2)]2 (Ln = YIII EuIII, GdIII, TbIII, Tm III, LuIII; hfa- = hexafluoroacetylacetonato, thd- = dipivaloylmethanato) are obtained by reacting [Ln(hfa) 3(H2O)2] and [Ln(thd)3], respectively, with N,N-dimethylaminoethanol in toluene and are fully characterized. X-ray single crystal analysis performed for the TbIII compounds confirms their dimeric structure. The coordination mode of N,N-dimethylaminoethanol depends on the nature of the β-diketonate. In [Tb2(hfa)6(μ2-O(CH2) 2NHMe2)2], eight-coordinate TbIII ions adopt distorted square antiprismatic coordination environments and are O-bridged by two zwitterionic N,N-dimethylaminoethanol ligands with a Tb1...Tb2 separation of 3.684(1) A. In [Tb(thd) 2(μ2,η2-O(CH2) 2NMe2)]2, the N,N-dimethyIaminoethanol acts as chelating-bridging O,N-donor anion and the TbIII ions are seven-coordinate; the Tb1...Tb1A separation amounts to 3.735(2) A within centrosymmetric dimers. The dimeric complexes are thermally stable up to 180°C, as shown by thermogravimetric analysis, and their volatility is sufficient for quantitative sublimation under reduced pressure. The Eu III and TbIII dimers display metal-centered luminescence, particularly [Eu2(hfa)6(O(CH2) 2NHMe2)2] (quantum yield QLn L = 58%) and [Tb(thd)2(O(CH2) 2NMe2)]2 (32%). Consideration of energy migration paths within the dimers, based on the study of both pure and Eu III- or TbIII-doped (0.01-0.1 mol %) LuIII analogues, leads to the conclusion that both the β-diketone and N,N-dimethylaminoethanol ligands contribute significantly to the sensitization process of the EuIII luminescence. The ancillary ligand increases considerably the luminescence of [Eu2(hfa)6(O(CH 2)2NHMe2)2], compared to [Ln(hfa)3(H2O)2], through the formation of intra-ligand states while it is detrimental to TbIII luminescence in both β-diketonates. Thin films of the most luminescent compound [Eu 2(hfa)6(O(CH2)2NHMe 2)2] obtained by vacuum sublimation display photophysical properties analogous to those of the solid-state sample, thus opening perspectives for applications in electroluminescent devices.