Metal-Containing Dendrimers
AssigneesIsis Innovation Limited, University Court of the University of St Andrews
InventorsPaul Leslie Burn, Victor Christou, Shih-Chun Lo, Jonathan Pillow, John Lupton, Ifor Samuel
Life of this patent
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Abstract
This invention relates to a light emitting device which comprises at least one layer that contains an organometallic dendrimer having a core comprising a metal cation. The invention also relates to organometallic dendrimers and methods for producing the same.
Claims46
A light emitting device which comprises at least one layer that contains an organometallic dendrimer with a metal cation as part of its core, said core not comprising a magnesium chelated porphyrin, wherein the organometallic dendrimer is blended with at least one other dendrimer and/or polymer and/or molecular material.
A device according to claim 20, wherein the metal is iridium or rhenium.
A blend comprising an organometallic dendrimer which comprises a metal cation as part of its core and two or more dendrons, wherein at least one of said dendrons is conjugated and wherein the dendrimer is luminescent in the solid state, wherein the core does not comprise a magnesium chelated porphyrin, and, wherein said organometallic dendrimer is blended with at least one other dendrimer and/or polymer and/or molecular material.
A blend comprising an organometallic dendrimer of the formula (I):
- CORE-[DENDRITE]n, (I)
- in which CORE represents a metal ion or a group containing a metal ion,
- n represents an integer of 1 or more,
- each DENDRITE, which may be the same or different, represents an inherently at least partially conjugated dendritic molecular structure comprising aryl groups and/or heteroaryl groups or nitrogen and, optionally, vinyl or acetylenyl groups connected via sp2 or sp hybridized carbon atoms of said (hetero) aryl, vinyl and acetylenyl groups or via single bonds between nitrogen and said (hetero) aryl groups,
- said CORE terminating in the single bond which is connected to an sp2 hybridized (ring) carbon atom of the first (hetero) aryl group or nitrogen to which more than one at least partially conjugated dendritic branch is attached, said ring carbon atom or nitrogen forming part of said DENDRITE,
- said CORE not comprising a magnesium chelated porphyrin, wherein
- said organometallic dendrimer is blended with at least one other dendrimer and/or polymer and/or molecular material.
A blend comprising an organometallic dendrimer of the formula (II):
- E-[DENDRITE1]n[DENDRITE2]m (II)
- in which CORE represents a metal ion or a group containing a metal ion,
- n and m, which may be the same or different, each represent an integer of at least 1,
- each DENDRITE′, which may be the same or different when n is greater than 1, and each DENDRITE2, which may be the same or different when m is greater than 1, both represent dendritic structures including at least one branching point, and optionally at least one link between branching points,
- at least one of said structures being conjugated and comprising aryl groups and/or heteroaryl groups or nitrogen and, optionally, vinyl and/or acetylenyl groups, connected via sp2 or sp hybridized carbon atoms of said (hetero) aryl, vinyl and acetylenyl groups or via single bonds between nitrogen and said (hetero) aryl groups,
- the branching points and/or the links between the branching points in DENDRITE1 being different from those in DENDRITE2,
- said CORE terminating in the single bond which is connected to a sp2 hybridized (ring) carbon atom of the first (hetero) aryl group or nitrogen to which more than one conjugated dendritic branch is attached, said ring carbon atom or nitrogen forming part of said conjugated DENDRITE1 or DENDRITE2 and CORE terminating at the single bond to the first branching point for the other of said DENDRITE1 or DENDRITE2, and
- at least one of the CORE, DENDRITE1 and DENDRITE2 being luminescent, wherein
- said organometallic dendrimer is blended with at least one other dendrimer and/or polymer and/or molecular material.
Dependencies are inferred from the claim text.