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US 2006/0142520 A1Published application
Hole transport layers for organic electroluminescent devices
Assignee3M Innovative Properties Company
InventorsTodd Jones, Sergey Lamansky, Tommie Kelley, Kevin Lewandowski, Fred McCormick
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Abstract
A copolymeric material is described that is suitable for use in a hole transport layer of organic electroluminescent device. The copolymeric material contains a phosphorous-containing group selected from a phosphate or phosphonate group and tertiary amino group selected from a triarylamino group or carbazolyl group.
Claims20
A copolymer comprising the reaction product of a monomer mixture comprising:
- a) a first ethylenically unsaturated monomer having a phosphate group of formula —OP(═O)(OR2)2 or a phosphonate group —P(═O)(OR2)2, wherein each R2 is independently hydrogen, alkyl, aryl, or aralkyl;
- and
- b) a second ethylenically unsaturated monomer having tertiary amino group selected from an triarylamino group or a carbazolyl group.
An article comprising:
- a) a metal-containing surface;
- and
- b) a copolymeric material chemically bonded to the metal-containing surface, said copolymeric material comprising the reaction product of a monomer mixture comprising:
- i) a first ethylenically unsaturated monomer having a phosphate group of formula —OP(═O)(OR2)2 or a phosphonate group of formula —P(═O)(OR2)2, wherein each R2 is independently hydrogen, alkyl, aryl, or aralkyl;
- and
- ii) a second ethylenically unsaturated monomer having tertiary amino group selected from an triarylamino group or a carbazolyl group.
3 more elements
An organic electroluminescent device comprising:
- a) a first electrode and a second electrode;
- and
- b) an organic emissive element positioned between the first and second electrodes, the organic emissive element comprising a copolymeric material comprising the reaction product of a monomer mixture comprising:
- i) a first ethylenically unsaturated monomer having a phosphate group of formula —OP(═O)(OR2)2 or a phosphonate group of formula —P(═O)(OR2)2, wherein each R2 is independently hydrogen, alkyl, aryl, or aralkyl;
- and
- ii) a second ethylenically unsaturated monomer having tertiary amino group selected from an triarylamino group or a carbazolyl group.
3 more elements
A method of making an organic electroluminescent device comprising:
- providing a first electrode and a second electrode;
- positioning an organic emissive element between the first electrode and the second electrode, wherein the organic emissive element comprises a copolymeric material comprising the reaction product of a monomer mixture comprising:
- a) a first ethylenically unsaturated monomer having a phosphate group of formula OP(═O)(OR2)2 or a phosphonate group of formula —P(═O)(OR2)2, wherein each R2 is independently hydrogen, alkyl, aryl, or aralkyl;
- and
- b) a second ethylenically unsaturated monomer having tertiary amino group selected from an triarylamino group or a carbazolyl group.
2 more elements
Dependencies are inferred from the claim text.