Substituted fluorenes polymers, their preparation and use in optical devices
AssigneeCambridge Display Technology Limited
InventorsRichard O'Dell, Carl Towns
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Abstract
A polymer for use in an optical device comprising: a hole transporting region, an electron transporting region, an emissive region, said polymer comprising an optionally substituted repeat unit of formula (I): wherein each Ar is the same or different and comprises an optionally substituted aryl group. 1
Claims22
1) A polymer for use in an optical device comprising:
- a hole transporting region
- an electron transporting region
- an emissive region
- said polymer comprising an optionally substituted repeat unit of formula (I):
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- wherein each ar is the same or different and comprises an optionally substituted aryl group:
5) A polymer according to any preceding claim comprising less than 50 mol % of repeat units of formula (I).
7) A polymer according to any preceding claim wherein the electron transporting region comprises at least one repeat unit of formula (I).
11) A method of controlling the glass transition temperature of a polymer which comprises polymerising in a polymerisation mixture a monomer of formula (III):
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- wherein each Ar is the same or different and comprises an optionally substituted aryl group and each P is a functional group for polymerisation, the process comprising the steps of polymerising an amount of the monomer of formula (III) required to reach a preselected glass transition temperature.
Dependencies are inferred from the claim text.