Polymers for use in optical devices
AssigneeCambridge Display Technology Limited
InventorsAndrew Bruce Holmes, Xiao-Chang Li, Stephen Carl Moratti, Kenneth Andrew Murray, Richard Henry Friend
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Abstract
Optical devices fabricated from solvent processible polymers suffer from susceptibility to solvents and morphological changes. A semiconductive polymer capable of luminescence in an optical device is provided. The polymer comprises a luminescent film-forming solvent processible polymer which contains cross-linking so as to increase its molar mass and to resist solvent dissolution, the cross-linking being such that the polymer retains semiconductive and luminescent properties.
Claims6
A polymer capable of electron transport in an optical device, which polymer comprises a film-forming polymer which is solvent processible or formed from a processible precursor polymer and which includes an electron transport segment in the polymer main chain or covalently linked thereto in an electron transport side chain, wherein the electron transport segment comprises the moiety Ar1-Het-Ar2 in which Ar1 and Ar2 are the same as or different from one another and are each selected from aromatic and heteroaromatic units, fused aromatic derivatives thereof and double bonds, and Het is a heteroaromatic ring, wherein the electronic structure of the heteroaromatic ring favours electron transport.
Dependencies are inferred from the claim text.