Claims
- 1. An electroluminescent device, comprising
a) a space-apart anode and cathode; and b) an emissive layer disposed between the space-apart anode and cathode and including an organic compound having a complex fluorene structure represented by one of the following formulas: 162wherein: X1, X2, X3, and X4 are individually the same or different and include a moiety containing CH or N; R1, R2, R3, and R4 are substituents each being individually hydrogen, or alkyl, or alkenyl, or alkynyl, or alkoxy of from 1 to 40 carbon atoms; aryl or substituted aryl of from 6 to 60 carbon atoms; or heteroaryl or substituted heteroaryl of from 4 to 60 carbons; or F, Cl, or Br; or a cyano group; or a nitro group; or R3, or R4 or both are groups that form fused aromatic or heteroaromatic rings.
- 2. The electroluminescent device of claim 1 wherein the organic compound having the complex fluorene structure is a small molecule or a polymer or mixture thereof.
- 3. The electroluminescent device of claim 1 wherein the organic compound having the complex fluorene structure is a small molecule represented by formula:
- 4. The organic compound in claim 1 wherein the organic compound having the complex fluorene structure is a polymer represented by repeating units of formula (V) or formula (VI)
- 5. A method of making an electroluminescent device, comprising the steps of:
a) providing a space-apart anode and cathode; and b) depositing an emissive layer between the space-apart anode and cathode and including an organic compound having a complex small molecule or fluorene structure represented by one of the following formulas 165wherein: X1, X2, X3, and X4 are individually the same or different and include a moiety containing CH or N; R1, R2, R3, and R4 are substituents each being individually hydrogen, or alkyl, or alkenyl, or alkynyl, or alkoxy of from 1 to 40 carbon atoms; aryl or substituted aryl of from 6 to 60 carbon atoms; or heteroaryl or substituted heteroaryl of from 4 to 60 carbons; or F, Cl, or Br; or a cyano group; or a nitro group; or R3, or R4 or both are groups that form fused aromatic or heteroaromatic rings; or R3, or R4 or both represent one or more than one substituents.
- 6. The method of claim 5 wherein the organic compound having the complex fluorene structure is a polymer produced according to the following reaction: contacting (a) aromatic monomers having at least two reactive trifluorosulfonate groups and aromatic monomers having at least two reactive boron derivative groups selected from boronic acid, boronic ester, or borane groups or (b) aromatic monomers having one reactive trifluorosulfonaate group and one boron derivative group selected from boronic acid, boronic ester, or borane groups, with each other; in a reaction mixture which comprises: (i) a catalytic amount of a catalyst, (ii) an organic or inorganic base, and (iii) an organic solvent, under reaction conditions sufficient to form conjugated polymer.
- 7. An electroluminescent device which comprises an anode, a cathode, and an organic compound disposed between the space-apart anode and cathode, the organic compound being doped with one or more fluorescent dyes, phosphorescent dopants, or other light emitting materials, the organic compound including complex fluorene structure is represented by one of the following formulas
CROSS REFERENCE TO RELATED APPLICATION
[0001] Reference is made to commonly assigned U.S. patent application Ser. No. ______ filed concurrently herewith, entitled “Complex Fluorine Containing Compounds” by Shiying Zheng et al, the disclosure of which is incorporated herein.