White electroluminescent polymer and organic...

Details White electroluminescent polymer and organic... White electroluminescent polymer and organic...

2005-09-13

2005-09-13

Yamnitzky, Marie (Department: 1774)

Stock material or miscellaneous articles

Composite

Of inorganic material

C428S917000, C313S504000, C313S506000, C257S040000, C252S301350, C526S259000, C528S423000

Reexamination Certificate

active

06942931

ABSTRACT:
A white electroluminescent polymer having a 3,3′-bicarbazyl group incorporated into a polymeric main chain of polyarylene, represented by the Formula 1:in which Ar is an aromatic group having 6 to 26 carbon atoms, or a heteroaromatic group having 4 to 14 carbon, in which the aromatic group may be substituted with alkyl group, alkoxy group or amine group, each having 1 to 12 carbon atoms; R is a hydrogen atom, linear, branched or cyclic alkyl group having 1 to 12 carbon atoms, or an aromatic group having 6 to 14 carbon atoms, in which the aromatic group may be substituted with alkyl group, alkoxy group or amine group, each having 1 to 12 carbon atoms; and m and n may be the same or different, and satisfy the following relationships 0.1≦m/(m+n)≦0.9 and 0.1≦n/(m+n)≦0.9. The present inventive white electroluminescent polymer is capable of overcoming the limits of conventional polymer blending systems.

REFERENCES:
patent: 6630254 (2003-10-01), Leclerc et al.
patent: 2002/0177687 (2002-11-01), Noguchi et al.
patent: 8-003547 (1996-01-01), None
Liu et al., “Blue-Light-Emitting Fluorene-Based Polymers with Tunable Electronic Properties”, Chem. Mater. 2001, 13, pp. 1984-1991 (published on Web Jun. 2, 2001).
Morin et al., “Syntheses of Conjugated Polymers Derived from N-alkyl-2, 7-carbazoles”, Macromolecules 2001, 34, pp. 4680-4682 (published on Web Jun. 6, 2001).
Xia et al., “Decreased Aggregation Phenomena in Polyfluorenes by Introducing Carbazole Copolymer Units”, Macromolecules 2001, 34, pp. 5854-5859 (published on Web Jun. 27, 2001).

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