Complex fluorene-containing compounds and use
View Patent ↗An organic molecular compound comprising a complex fluorene structure having either: wherein: X 1 , X 2 , X 3 , and X 4 are individually the same or different and include a moiety containing at least one CH and one N; R 1 , R 2 , R 3 , and R 4 are substituents each being individually hydrogen, or amino, 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 R 3 , or R 4 or both are groups that form fused aromatic or heteroaromatic rings; or R 1 and R 2 together form a cyclic ring having 3 to 20 carbon, nitrogen, sulfur or oxygen atoms; or R 1 and R 2 together form a double bond moiety.
1. An electroluminescent device, comprising
a) a spaced-apart anode and cathode; and
b) an emissive layer disposed between the spaced-apart anode and cathode and including an organic polymeric compound having a complex fluorene structure represented by one of the following formulas:
wherein:
X 1 , X 2 , X 3 , and X 4 are individually CH; R 1 , R 2 , R 3 , and R 4 are substituents each being individually hydrogen, or amino, 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 R 3 , or R 4 or both are groups that form fused aromatic or heteroaromatic rings; or R 1 and R 2 together form a cyclic ring having 3 to 20 carbon, nitrogen, sulfur or oxygen atoms; or R 1 and R 2 together form a double bond moiety.
2. The electroluminescent device according to claim 1 wherein the organic polymeric compound has a complex fluorene structure represented by repeating units of formula (V) or (VI)
wherein:
X 5 and X 6 are linking groups, Y 1 and Y 2 are each individually represented as a substituted or unsubstituted alkyl, alkenyl, alkynyl, aryl, or heteroaryl or other conjugated groups, and x, y 1 and y 2 are integers from 0 to 6.
3. A method of making an electroluminescent device, comprising the steps of:
a) providing a spaced-apart anode and cathode; and
b) depositing an emissive layer between the spaced-apart anode and cathode and including an organic polymeric compound having a complex fluorene structure represented by one of the following formulas
wherein:
X 1 , X 2 , X 3 , and X 4 are individually CH; R 1 , R 2 , R 3 , and R 4 are substituents each being individually hydrogen, or amino, 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 R 3 , or R 4 or both are groups that form fused aromatic or heteroaromatic rings; or R 3 , or R 4 or both represent one or more than one substituents; or R 1 and R 2 together form a cyclic ring having 3 to 20 carbon, nitrogen, sulfur or oxygen atoms; or R 1 and R 2 together form a double bond moiety.