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US 2005/0233232 A1Published application
Luminescent lanthanide complexes with imine ligands and devices made with such complexes
AssigneeE.I. du Pont de Nemours and Company
InventorsNora Radu, Daniel Lecloux, Norman Herron, Lucy Clarkson
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Abstract
The present invention is generally directed to luminescent lanthanide compounds with imine ligands, and devices that are made with the lanthanide compounds.
Claims14
A lanthanide compound having Formula III-B, below:
- Ln(β-enolate)3(mono-imine)2 (III-B)
- where:
- in Formulae (III-B):
- mono-imine has Formula I
- in Formulae I:
- R1 can be the same or different at each occurrence and is selected from alkyl, fluorinated alkyl, aryl, heteroalkyl, heteroaryl, -QR2, -QN(R2)2, X, or adjacent R1 groups can join to form 5-membered or 6-membered rings,
- R2 is alkyl or aryl,
- Q is a single bond, alkylene, arylene, or —C(O)—,
- X is Cl, F, Br, or —CN,
- alpha is an integer from 1 to 4,
- γ is an integer from 1 to 3, and
- δ is 0 or an integer from 1 to 3.
9 more elements
(canceled)
A lanthanide compound having Formula III-B with the imines having Formula I and having a structure selected from compounds as provided in the below table.
- TABLE 1
- Compound
- Ln
- β-enolate
- mono-imine
- Formula
- 1-a
- Eu
- TTFA
- 4-CNpy
- III-B
- 1-c
- Eu
- TTFA
- isoq
- III-B
- 1-d
- Eu
- TTFA
- 4-tbpy
- III-B
- 1-e
- Eu
- TTFA
- 4-phpy
- III-B
- 1-g
- Tb
- Acac
- 4-CNpy
- III-B
- 1-i
- Tb
- Acac
- isoq
- III-B
- 1-j
- Tb
- Acac
- 4-tbpy
- III-B
- 1-k
- Tb
- Acac
- 4-phpy
- III-B
43 more elements
(canceled)
Dependencies are inferred from the claim text.