Isis Innovation Limited

University Court of the University of St. Andrews

Isis Innovation Limted

Oxford University Innovation Ltd

Shih-Chun Lo

Paul Leslie Burn

Ifor David William Samuel

Paul Burn

Victor Christou

Ifor David Samuel

John Lupton

Jonathan N G Pillow

Jonathan Nigel Pillow

Thomas Dimitrios Anthopoulos

John Mark Lupton

Ifor D W School Of Physics & Astronomy Samuel

A charge-neutral organometallic dendrimer is described, said dendrimer having the formula (I):CORE-[DENDRITE(-Q)]&#x2003;&#x2003;(I)in which CORE represents a group of formula MXY, in which M represents a metal cation, x represents an integer of 1 or more, each X which may be the same or different represents a mono-, bi- or tri-dentate coordinating group, z represents 0 or an integer of 1 or more, and each Y which may be the same or different represents a coordinating group, the total of (b.x)+(c.z) being equal to the number of coordination sites on M, wherein b is the number of coordination sites on X and c is the number of coordination sites on Y; n represents an integer of 2 or more; each DENDRITE which may be the same or different represents a dendritic molecular structure bonded to a group X; a represents 0 or an integer of 1 or more; and each Q which may be the same or different represents a surface group; CORE terminating in the first single bond which is connected to a branching group or branching atom of DENDRITE; which dendrimer has a structure in which no hemisphere of a notional sphere centered on M and containing the dendrimer is devoid of a said first single bond.

Neutral metallic dendrimer complexes

Light emitting devices are described which incorporate, as the light emitting element, a dendrimer of which the constituent dendrons include a conjugated dendritic structure comprising aryl and/or heteroaryl groups connected to each other via bonds between sphybridised ring atoms of said aryl or heteroaryl groups.

Aryl-aryl dendrimers

This invention relates to a hat 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.

Metal-containing dendrimers

The invention provides a cyclometallated complex comprising the structure of formula I wherein: The invention also provides the use of such complexes in optoelectronic devices, and in particular in organic light emitting devices.

Organic phosphorescent material and organic optoelectronic device

Light emitting devices are described which incorporate, as the light emitting element, a dendrimer of which the constituent dendrons include a conjugated dendritic structure comprising aryl and/or heteroaryl groups connected to each other via bonds between sphybridized ring atoms of said aryl or heteroaryl groups.

Asymmetric light-emitting dendrimers having the formulae: (a) CORE-[DENDRITE1]n[DENDRITE2]m and (b) CORE-[DENDRITE]n are disclosed.

Asymmetric dendrimers

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.

A charge-neutral organometallic dendrimer is described, said dendrimer having the formula (I):CORE-[DENDRITE(-Q)]&#x2003;&#x2003;(I)in which CORE represents a group of formula MXY, in which M represents a metal cation, x represents an integer of 1 or more, each X which may be the same or different represents a mono-, bi- or tri-dentate coordinating group, z represents 0 or an integer of 1 or more, and each Y which may be the same or different represents a coordinating group, the total of (b.x)+(c.z) being equal to the number of coordination sites on M, wherein b is the number of coordination sites on X and c is the number of coordination sites on Y; n represents an integer of 2 or more; each DENDRITE which may be the same or different represents a dendritic molecular structure bonded to a group X; a represents 0 or an integer of 1 or more; and each Q which may be the same or different represents a surface group; CORE terminating in the first single bond which is connected to a branching group or branching atom of DENDRITE; which dendrimer has a structure in which no hemisphere of a notional sphere centred on M and containing the dendrimer is devoid of a said first single bond.

A light emitting device having at least one layer that contains a phosphorescent organometallic dendrimer with a metal cation and two or more coordinating groups as part of its core and wherein at least two of said coordinating groups each have a dendron attached, at least one of which dendrons comprises at least one nitrogen atom which forms a part of an aromatic ring system or is directly bonded to at least two aromatic groups.

Phosphorescent dendrimers for use in light-emitting devices

Light emitting devices are incorporate, as the light emitting element, a dendrimer of which the constituent dendrons include a conjugated dendritic structure comprising aryl and/or heteroaryl groups connected to each other via bonds between sphybridized ring atoms of said aryl or heteroaryl groups.

Asymmetric light-emitting dendrimers having the formulae: (a) CORE&#x2212;[DENDRITE][DENDRITE]and (b) CORE&#x2212;[DENDRITE]are disclosed.

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Oxford, United Kingdom

Shih-Chun Lo