Sumitomo Chemical Company, Limited

Cambridge Display Technology Limited

James Lee

William Tarran

Martin Humphries

Nazrul Islam

Kiran Timothy Kamtekar

Philip Stackhouse

A compound of formula (I): (Formula (I)) wherein Ar, Arand Arindependently in each occurrence is a Caryl group or a 5-20 membered heteroaryl group which is unsubstituted or substituted with one or more substituents; X, Xand Xin each occurrence is independently a direct bond or a group of formula &#x2014;C(R)&#x2014; wherein Rin each occurrence is independently H or a substituent. The compound of formula (I) may be used to form an n-dopant for doping an organic semiconductor. A film formed by such n-doping may be used in an organic electronic device, for example an electron injection layer of an organic light-emitting device. 

Compounds for use in organic electronic devices

A phosphorescent compound of formula (I): wherein: M is a transition metal; Cis a carbon atom forming a metal-carbene bond with M; A is a saturated bridged bicyclic or saturated bridged tricyclic group consisting of one nitrogen atom and 6-12 carbon atoms; either: (i) Xis a bridgehead carbon atom of the bridged bicyclic or bridged tricyclic group and Xis NRwherein Ris a substituent, or (ii) Xis N and Xis a bridgehead group of formula CRwherein Ris H or a substituent; Aris a Caromatic group or a 5-20 membered heteroaromatic group; L in each occurrence is independently a mono- or poly-dentate ligand other than a ligand of formula A-Ar; x is at least 1; and y is 0 or a positive integer. The compound of formula (I) may be used as a blue light-emitting material in a white organic light-emitting device.

Light-emitting compound

A compound of formula (I) wherein Z is a group of formula (II) and Core is selected from groups of formula (IIIa) or (IIIb) wherein X is S or O; Ris a substituent; n is 0 or a positive integer; Arindependently in each occurrence is an arylene group; Ris a substituent; Ris a substituent; Ris an arylene or heteroarylene group; Y is C or Si; a is 1, 2 or 3; b is 0 or a positive integer; and c is 0 or a positive integer. The compound of formula (I) may be used as a host for a light-emitting dopant in an organic light-emitting device. 

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Godmanchester, United Kingdom

James Lee