Lanthanide diketonates

Hydrated lanthanide diketonates may be dehydrated under vacuum over P40io-... 

In the lanthanide-/ diketone system, when the stoichiometry of M L is increased and at high levels of ligand, both hypersensitive transitions and non-hypersensitive transitions were intensified in Pr(III) and Nd(III) (Table 8.30b). 

Lanthanide -Diketonates as Diels-Alder Catalysts 8.3.5 Reformatsky Reactions... 

Although pyridine and other amine-type ligands form adducts with lanthanide diketonates, few other lanthanide complexes have been made. However, the first homoleptic lanthanide ammine complexes, [Yb(NH3)g] [Cu(S4)2] NH3, [Yb(NH3)s] [Ag(S4)2]-2NH3,and[La(NH3)9] [ 0(84)2],have been synthesised by reactions in aqueous ammonia. ... 

Figure 2.29 The TPTZ ligands stack to form a centrosymmetric dimer in the crystal structure of Eu(L )3TPTZ. [25]. (Reprinted from Polyhedron, 26, C.R. De Silvaa, J.R. Maeyera, A. Dawsona and Z. Zheng, Adducts of lanthanide -diketonates with 2,4,6-tri(2-pyridyl)-l,3,5-triazine synthesis, structural characterization, and photoluminescence studies, 1229-1238, 2007, with permission from Elsevier.)...

FIGURE 91 Luminescence of lanthanide -diketonates (redrawn from Eliseeva et al., 2006). 

Table II. Solubility of Some Lanthanide -Diketonate Shift Reagents ...

Table 1 Lanthanide diketonate chelates used as NMR shift reagents...

Fig. 21. Photophysical processes in lanthanide -diketonate complexes (antenna effect). Abbreviations A = absorption, F = fluorescence, P = phosphorescence, L = lanthanide-centered luminescence, ISC = intersystem crossing,...

The first types of lanthanide-based OLEDs were prepared by vacuum deposition of the different layers (hole injection layer, emitting layer, electron transport layer, cathode) on the ITO substrate. This technique is applicable only for volatile and thermally stable lanthanide complexes. LFnfortunately, most volatile lanthanide -diketonate complexes are not the ones with the best luminescence properties. Many -diketonate complexes carmotbe sublimed without... 

Lanthanide complexes, including lanthanide -diketonate complexes, have been often tested as a luminescent materials in polymer optical fiber amplifiers and in plartar optical waveguides. This research has been reviewed by KirriM et al. (2002). 

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