METAL-LIGAND COORDINATION COMPOUNDS
The present invention relates to novel metal-ligand coordination compounds of the general formula T1-(A-T2)i, where T1 and T2 represent metal-ligand coordination compounds, to the use thereof in a device, and to a formulation and a device which comprise the novel compounds.
1 - 17 . (canceled)
18 . A compound of the following formula (1)
T -( A - T 2 ) i formula (1)
where
T 1 is an i-valent unit of the formula M 1 (L 1 ) n , and
T 2 is on each occurrence, identically or differently, a monovalent unit of the formula M 2 (L 2 ) m ;
A is a divalent unit which contains a conjugation-interrupting unit;
M 1 and M 2 are, independently of one another and identically or differently on each occurrence, selected from the group consisting of the main-group metals, transition metals, lanthanoids and actinoids;
L 1 and L 2 are, independently of one another and identically or differently on each occurrence, mono- or polydentate organic ligands, so that the units of the formulae M 1 (L 1 ) n and M 2 (L) 2 m represent metal-ligand coordination compounds;
i is an integer greater than or equal to 1;
n and m are, independently of one another, an integer greater than or equal to 2;
with the proviso that T 1 and T 2 are bonded to A via atoms of the ligands L 1 and L 2 .
19 . The compound according to claim 18 , wherein the unit L 1 -A-L 2 bridging T 1 and T 2 contains at least 10 non-hydrogen atoms.
20 . The compound according to claim 18 , wherein M 1 and M 2 are selected, independently of one another and identically or differently on each occurrence, from the group consisting of Ir, Ru, Os, Eu, Pt, Zn, Mo, W, Rh and Pd.
21 . The compound according to claim 18 , wherein A is a divalent unit selected from the group consisting of the following:
linear or branched C 1-12 -alkylene,
C 3-8 -cycloalkylene,
linear or branched mono(C 1-12 -alkyl)silylene,
linear or branched di(C 1-12 -alkyl)silylene,
linear or branched tri(C 1-12 -alkyl)silylene,
a silylene group which is substituted by one, two or three mono- or polycyclic aromatic or heteroaromatic ring systems having 5 to 60 aromatic ring atoms,
linear or branched Si1-5-silylene,
linear or branched C1-12-alkyloxy-C1-12-alkylene,
linear or branched aryl-C1-12-alkyloxy-C1-12-alkylene, where aryl is a mono- or polycyclic aromatic or heteroaromatic ring system having 5 to 60 aromatic ring atoms,
linear or branched C1-12-alkylthio-C1-12-alkylene, sulfone,
linear or branched C1-12-alkylene sulfone, sulfone oxide and
linear or branched C 1-12 -alkylene sulfone oxide,
where one or more H atoms of the said groups which represent A is optionally replaced by
F, Cl, Br, I,
a further C 1-12 -alkyl or C 3-8 -cycloalkyl, where one or more CH 2 groups of the alkyl or cycloalkyl is optionally replaced by heteroatoms, or a mono- or polycyclic aromatic or heteroaromatic ring system having 5 to 60 aromatic ring atoms, and
where one or more CH 2 groups of the said groups which represent A is optionally replaced by a divalent mono- or polycyclic aromatic or heteroaromatic ring system having 5 to 60 aromatic ring atoms, and
with the proviso that the divalent unit A can bond to the ligands L 1 or L 2 via any conceivable atom of the unit.
22 . The compound according to claim 18 , wherein i is equal to 1, 2, 3 or 4.
23 . The compound according to claim 18 , wherein n is equal to 2, 3, 4, 5 or 6.
24 . The compound according to claim 18 , wherein m is equal to 2, 3, 4, 5 or 6.
25 . The compound according to claim 18 , wherein in each case at least one L 1 and/or at least one L 2 is a bidentate ligand.
26 . The compound according to claim 18 , wherein T 1 and T 2 are phosphorescent metal-ligand coordination compounds.
27 . The compound according to claim 18 , wherein an emission band of the unit T 1 is in a wavelength range which overlaps with the wavelength range of an absorption band of the unit T 2 .
28 . The compound according to claim 18 , wherein T 2 is a dye.
29 . An electronic device comprising the compound according to claim 18 .
30 . An organic electroluminescent device containing a the compound according to claim 18 , wherein the device is an organic light-emitting diode, an organic light-emitting electrochemical cell or an organic light-emitting transistor.
31 . The organic electroluminescent device according to claim 30 , wherein the device has a planar shape and/or is in the form of a fibre.
32 . An electronic device comprising the compound according to claim 18 , wherein the device is selected from the group consisting of an organic integrated circuit, an organic field-effect transistor, an organic thin-film transistor, an organic solar cell, a dye-sensitised organic solar cell, an organic optical detector, an organic photoreceptor, an organic field-quench device, an organic laser diode and an organic plasmon emitting device.
33 . A formulation comprising at least one compound according to claim 18 and at least one solvent.
34 . The formulation according to claim 33 , wherein the formulation is a solution, dispersion or emulsion.
35 . Compound according to claim 18 or device according to claim 30 for the therapy, prophylaxis and/or diagnosis of diseases and/or cosmetic conditions.