Sumitomo Chemical Company, Limited

Cambridge Display Technology Limited

Helen Middleton

Martin Humphries

Richard J Wilson

Richard John Wilson

Martin John Humphries

A light-emitting composition comprises a polymer and a phosphorescent light-emitting material. The polymer comprises conjugating repeat units of formula (I) and up to 20 mol % of conjugation-blocking repeat units of repeat units of formula (II):  Arrepresents an aryl or heteroaryl group; R, which may be the same or different in each occurrence, is a substituent; p is 0 or an integer; Arin each occurrence independently represents a substituted or unsubstituted aryl or heteroaryl group; and Sprepresents an acyclic spacer group that does not provide any conjugation path between the two groups Ar. Optionally, p is 0, 1, 2, 3 or 4 and each Ris a non-polar substituent. Each Ris advantageously selected from Chydrocarbyl substituents. A light-emitting device comprises an anode, a cathode and a light-emitting layer between the anode and the cathode, the light-emitting layer comprising a light-emitting composition as described.

Light emitting composition and device

An organic light-emitting device comprises an anode, a cathode and a light-emitting layer between the anode and the cathode. The light-emitting layer comprises a compound of formula (I): 

Compound, device and method of making same

A semiconducting polymer and electronic devices comprising such polymer, in which the polymer has one or more repeat units, a first of the repeat units having the structure 

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Nottingham, United Kingdom

Helen Middleton