Polymers for use in optical device
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.
Claims14
A process for the production of a semiconductive polymer, which process comprises providing a luminescent film-forming solvent processible polymer and cross-linking the solvent processible polymer under conditions so as to increase its molar mass whereby the polymer is made resistant to solvent dissolution and retains its semiconductive and luminescent properties.
A process for the production of a semi conductive polymer, which process comprises providing a layer of a luminescent film-forming solvent processable polymer;
- crosslinking the solvent processable polymer to form the semi conductive polymer;
- and depositing a further layer of an electroactive polymer on the semi conductive polymer by solvent coating,
- wherein the step of crosslinking the solvent processable polymer is effected under conditions so as to increase its molar mass whereby the polymer is made resistant to solvent dissolution and retains its semi conductive and luminescent properties.
Dependencies are inferred from the claim text.