Claims
- 1. A light emitting molecule, comprising:
an anchoring group; a charge transport group having a first end and a second end, said first end of said charge transport group being bonded to said anchoring group, said charge transport group being configured to provide transport of electrical energy, said transport of electrical energy being substantially one-dimensional; a light emissive group bonded to said second end of said charge transport group; and a charge transfer group bonded to said light emissive group.
- 2. The light emitting molecule of claim 1, wherein said anchoring group includes an atom configured to form a chemical bond with an anode layer, said chemical bond being one of a covalent bond and a chemisorptive bond.
- 3. The light emitting molecule of claim 1, wherein said charge transport group has a longitudinal axis, said transport of electrical energy being substantially along said longitudinal axis.
- 4. The light emitting molecule of claim 1, wherein said charge transport group includes a conjugated group, said conjugated group including a plurality of conjugated π-bonds.
- 5. The light emitting molecule of claim 4, wherein said conjugated group includes at least one arylene group.
- 6. The light emitting molecule of claim 5, wherein said conjugated group includes at least two arylene groups bonded to one another to form a chain structure.
- 7. The light emitting molecule of claim 1, wherein said light emissive group includes a lanthanide metal ion.
- 8. The light emitting molecule of claim 7, wherein said lanthanide metal ion is one of Eu3+, Dy3+, and Tb3+.
- 9. The light emitting molecule of claim 7, wherein said light emissive group further includes a ligand, said lanthanide metal ion being encaged within said ligand.
- 10. The light emitting molecule of claim 1, wherein said charge transfer group includes an electron accepting group.
- 11. A pixel element, comprising:
a light emitting molecule including
an anchoring group, a conjugated group extending from said anchoring group and having a first end bonded to said anchoring group and an opposite, second end, said conjugated group having a formula (-A-B)m-A, m being an integer in the range of 1 to 19, A being an arylene group, B being one of an alkenylene group, an alkynylene group, and an iminylene group, and a light emissive group bonded to said second end of said conjugated group.
- 12. The pixel element of claim 11, wherein said anchoring group is configured to bond said light emitting molecule to an anode layer.
- 13. The pixel element of claim 12, wherein said anchoring group includes an atom configured to form a chemical bond with said anode layer, said atom being one of a nitrogen atom, an oxygen atom, a silicon atom, and a sulfur atom.
- 14. The pixel element of claim 11, wherein said conjugated group is configured to provide transport of electrical energy from said anchoring group to said light emissive group, said transport of electrical energy being substantially one-dimensional.
- 15. The pixel element of claim 11, wherein A is one of phenylene, pyridinylene, and pyrimidinylene.
- 16. The pixel element of claim 11, wherein B is ethynylene.
- 17. The pixel element of claim 11, wherein said light emissive group includes a luminescer.
- 18. The pixel element of claim 17, wherein said luminescer is a lanthanide metal ion.
- 19. The pixel element of claim 11, wherein said light emissive group includes a ligand-luminescer complex.
- 20. The pixel element of claim 11, wherein said light emitting molecule further includes a charge transfer group bonded to said light emissive group and configured to bond said light emitting molecule to a cathode layer.
- 21. An organic light emitting device, comprising:
a plurality of pixel elements arranged in an array, at least one pixel element of said plurality of pixel elements including a light emitting molecule that includes
an anchoring group configured to bond said light emitting molecule to a first conductive layer, a charge transport group having a first end, a second end, and a longitudinal axis, said first end of said charge transport group being bonded to said anchoring group, said charge transport group being configured to provide transport of electrical energy substantially along said longitudinal axis, a light emissive group bonded to said second end of said charge transport group, and a charge transfer group bonded to said light emissive group and configured to bond said light emitting molecule to a second conductive layer.
- 22. The organic light emitting device of claim 21, wherein said plurality of pixel elements are substantially aligned with respect to a common direction.
- 23. The organic light emitting device of claim 21, wherein said anchoring group includes one of a nitrogen atom, an oxygen atom, a silicon atom, and a sulfur atom.
- 24. The organic light emitting device of claim 21, wherein said longitudinal axis of said charge transport group extends between said first end of said charge transport group and said second end of said charge transport group.
- 25. The organic light emitting device of claim 21, wherein said charge transport group includes a plurality of conjugated π-bonds.
- 26. The organic light emitting device of claim 21, wherein said charge transport group includes at least one of an alkenylene group, an alkynylene group, an arylene group, and an iminylene group.
- 27. The organic light emitting device of claim 21, wherein said charge transport group includes a conjugated group having a formula:
- 28. The organic light emitting device of claim 21, wherein said light emissive group includes a lanthanide metal ion.
- 29. The organic light emitting device of claim 28, wherein said light emissive group further includes a ligand encaging said lanthanide metal ion.
- 30. A display device, comprising:
an anode layer; a cathode layer; and a plurality of pixel elements arranged in an array and positioned between said anode layer and said cathode layer, at least one pixel element of said plurality of pixel elements including a light emitting molecule that includes
an anchoring group bonded to said anode layer, a charge transport group having a first end and a second end, said first end of said charge transport group being bonded to said anchoring group, a light emissive group bonded to said second end of said charge transport group, and a charge transfer group bonded to said light emissive group and to said cathode layer.
- 31. The display device of claim 30, wherein said anchoring group forms a chemical bond with said anode layer, said chemical bond being one of a covalent bond and a chemisorptive bond.
- 32. The display device of claim 30, wherein said charge transport group is configured to provide transport of electrical energy substantially along a direction from said anode layer to said cathode layer.
- 33. The display device of claim 32, wherein said direction defines an angle with respect to a direction orthogonal to said anode layer, said angle being in the range of 0 to 25 degrees.
- 34. The display device of claim 32, wherein said direction is substantially orthogonal to a surface of said anode layer.
- 35. The display device of claim 30, wherein said charge transport group includes n arylene groups, n being an integer in the range of 2 to 20.
- 36. The display device of claim 35, wherein said n arylene groups are bonded to one another to form a chain structure.
- 37. The display device of claim 36, wherein said charge transport group further includes n−1 alkylene groups, each alkylene group of said n−1 alkylene groups being bonded to two successive arylene groups of said chain structure.
- 38. The display device of claim 36, wherein said charge transport group further includes n−1 alkenylene groups, each alkenylene group of said n−1 alkenylene groups being bonded to two successive arylene groups of said chain structure.
- 39. The display device of claim 36, wherein said charge transport group further includes n−1 alkynylene groups, each alkynylene group of said n−1 alkynylene groups being bonded to two successive arylene groups of said chain structure.
- 40. The display device of claim 36, wherein said charge transport group further includes n−1 iminylene groups, each iminylene group of said n−1 iminylene groups being bonded to two successive arylene groups of said chain structure.
- 41. The display device of claim 30, wherein said light emissive group is configured to emit light having a wavelength in the visible range.
- 42. The display device of claim 30, wherein said light emissive group includes a luminescer.
- 43. The display device of claim 42, wherein said light emissive group further includes a ligand encaging said luminescer.
- 44. A display device, comprising:
a first conductive layer; a second conductive layer; and a plurality of light emitting molecules positioned between said first conductive layer and said second conductive layer, said plurality of light emitting molecules being substantially aligned with respect to a common direction, at least one light emitting molecule of said plurality of light emitting molecules including
an anchoring group bonded to said first conductive layer, a conjugated group extending from said anchoring group and having a first end bonded to said anchoring group and an opposite, second end, and a light emissive group bonded to said second end of said conjugated group.
- 45. The display device of claim 44, wherein said common direction defines an angle with respect to a direction orthogonal to said first conductive layer, said angle being in the range of 0 to 25 degrees.
- 46. The display device of claim 45, wherein said angle is in the range of 0 to 10 degrees.
- 47. The display device of claim 44, wherein each light emitting molecule of said plurality of light emitting molecules extends between said first conductive layer and said second conductive layer.
- 48. The display device of claim 44, wherein said anchoring group includes an atom configured to form a chemical bond with said first conductive layer, said atom being one of a nitrogen atom, an oxygen atom, a silicon atom, and a sulfur atom.
- 49. The display device of claim 44, wherein each light emitting molecule of said plurality of light emitting molecules includes an anchoring group, said anchoring groups of said plurality of molecules being arranged in an array on a surface of said first conductive layer.
- 50. The display device of claim 44, wherein said conjugated group includes a plurality of conjugated π-bonds.
- 51. The display device of claim 44, wherein said conjugated group includes at least one arylene group.
- 52. The display device of claim 51, wherein said conjugated group includes n arylene groups, n being an integer in the range of 2 to 20.
- 53. The display device of claim 52, wherein said n arylene groups are bonded to one another to form a chain structure.
- 54. The display device of claim 53, wherein said conjugated group further includes at least one alkenylene group bonded to two successive arylene groups of said chain structure.
- 55. The display device of claim 54, wherein said conjugated group further includes n−1 alkenylene groups, each alkenylene group of said n−1 alkenylene groups being bonded to two successive arylene groups of said chain structure.
- 56. The display device of claim 53, wherein said conjugated group further includes at least one alkynylene group bonded to two successive arylene groups of said chain structure.
- 57. The display device of claim 56, wherein said conjugated group further includes n−1 alkynylene groups, each alkynylene group of said n−1 alkynylene groups being bonded to two successive arylene groups of said chain structure.
- 58. The display device of claim 53, wherein said conjugated group further includes at least one iminylene group bonded to two successive arylene groups of said chain structure.
- 59. The display device of claim 58, wherein said conjugated group further includes n−1 iminylene groups, each iminylene group of said n−1 iminylene groups being bonded to two successive arylene groups of said chain structure.
- 60. The display device of claim 44, wherein said light emissive group is configured to emit light having a wavelength in the range 410 nm to 650 nm.
- 61. The display device of claim 44, wherein said light emissive group includes a metal ion.
- 62. The display device of claim 61, wherein said metal ion is a lanthanide metal ion.
- 63. The display device of claim 62, wherein said lanthanide metal ion is one of Eu3+, Dy3+, and Tb3+.
- 64. The display device of claim 62, wherein said light emissive group further includes a ligand, said lanthanide metal ion being encaged within said ligand.
- 65. The display device of claim 44, wherein said at least one molecule further includes a charge transfer group bonded to said light emissive group and to said second conductive layer.
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application claims the benefit of U.S. Provisional Application Serial No. 60/407,813, filed on Sep. 3, 2002, the disclosure of which is incorporated herein by reference in its entirety.
Provisional Applications (1)
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Number |
Date |
Country |
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60407813 |
Sep 2002 |
US |