Electronic device including a pyrimidine compound
AssigneeE. I. Du Pont de Nemours and Company
InventorsAdam Fennimore, Michael Henry Howard, JR.
Life of this patent
Estimating the term…
Abstract
There is provided a compound having Formula I or Formula II In Formula I: R1-R4 are the same or different and are H, D, alkyl, silyl, alkoxy, cyano or aryl. At least two of R1-R4 are aryl groups and at least one aryl group includes an N,O,S-heterocycle. When two of R1-R4 include N-carbazolyl groups, two of R1-R4 are not aryl; In Formula II: Q is a single bond or a hydrocarbon aryl; and R5 and R6 are the same or different at each occurrence and are H, D, alkyl, silyl, alkoxy, cyano or aryl. At least one of R5 and at least one of R6 are an aryl group. At least one aryl group includes an N,O,S-heterocycle.
Claims18
A compound having Formula I or Formula II
- where:
- R1-R4 are the same or different and are H, D, alkyl, silyl, alkoxy, cyano or aryl, wherein at least two of R1-R4 are aryl groups, and at least one of the aryl groups includes an N,O,S-heterocycle, with the proviso that when two of R1-R4 include N-carbazolyl groups, two of R1-R4 are not aryl;
- where:
- Q is a single bond or a hydrocarbon aryl;
- and
- R5 and R6 are the same or different at each occurrence and are H, D, alkyl, silyl, alkoxy, cyano or aryl, wherein at least one of R5 and at least one of R6 are an aryl group, and at least one aryl group includes an N,O,S-heterocycle.
A composition comprising (a) a host which is a pyrimidine compound having Formula I or Formula II
- where:
- R1-R4 are the same or different and are H, D, alkyl, silyl, alkoxy, cyano or aryl, wherein at least two of R1-R4 are aryl groups, and at least one of the aryl groups includes an N,O,S-heterocycle, with the proviso that when two of R1-R4 include N-carbazolyl groups, two of R1-R4 are not aryl;
- where:
- Q is a single bond or a hydrocarbon aryl;
- and
- R5 and R6 are the same or different at each occurrence and are H, D, alkyl, silyl, alkoxy, cyano or aryl, wherein at least one of R5 and at least one of R6 are an aryl group, and at least one aryl group includes an N,O,S-heterocycle.
- and (b) a dopant capable of electroluminescence having an emission maximum between 380 and 750 nm.
An electronic device having at least one layer comprising the compound of Formula I or Formula II
- where:
- R1-R4 are the same or different and are H, D, alkyl, silyl, alkoxy, cyano or aryl, wherein at least two of R1-R4 are aryl groups, and at least one of the aryl groups includes an N,O,S-heterocycle, with the proviso that when two of R1-R4 include N-carbazolyl groups, two of R1-R4 are not aryl;
- where:
- Q is a single bond or a hydrocarbon aryl;
- and
- R5 and R6 are the same or different at each occurrence and are H, D, alkyl, silyl, alkoxy, cyano or aryl, wherein at least one of R5 and at least one of R6 are an aryl group, and at least one aryl group includes an N,O,S-heterocycle.
Dependencies are inferred from the claim text.