Blue luminescent compounds
View Patent ↗There is provided a compound having Formula I In the formula: R 1-4 are the same or different and are H, D, alkyl, silyl, aryl, deuterated alkyl, deuterated silyl, deuterated aryl, or an electron-withdrawing group; R 5 is H, D, alkyl, aryl, deuterated alkyl, or deuterated aryl; and R 6 -R 9 are the same or different and are H, D, alkyl, silyl, aryl, deuterated alkyl, deuterated silyl, or deuterated aryl. At least one of R 1-4 is an electron-withdrawing group.
1. A compound having Formula I
wherein:
R 1-4 are the same or different and are selected from the group consisting of H, D, alkyl, silyl, aryl, deuterated alkyl, deuterated silyl, deuterated aryl, and an electron-withdrawing group;
R 5 is selected from the group consisting of H, D, alkyl, aryl, deuterated alkyl and deuterated aryl; and
R 6 -R 9 are the same or different and are selected from the group consisting of H, D, alkyl, silyl, aryl, deuterated alkyl, deuterated silyl, and deuterated aryl; with the proviso that at least one of R 1-4 is an electron-withdrawing group, and with the proviso that at least one of R 2 or R 4 is selected from the group consisting of alkyl having 1-10 carbons, aryl having 6-20 carbons, an electron-withdrawing group, and deuterated analogs thereof, or R 1 , R 3 , R 5 , or R 9 is selected from the group consisting of alkyl having 1-10 carbons, aryl having 6-20 carbons, and deuterated analogs thereof, or at least one of R 6 or R 7 is selected from the group consisting of alkyl having 1-10 carbons and deuterated analogs thereof.
2. The compound of claim 1 , wherein R 1 is selected from the group consisting of alkyl having 1-10 carbons, aryl having 6-20 carbons, and deuterated analogs thereof.
3. The compound of claim 1 , wherein R 2 is selected from the group consisting of alkyl having 1-10 carbons, aryl having 6-20 carbons, an electron-withdrawing group, and deuterated analogs thereof.
4. The compound of claim 1 , wherein R 3 is selected from the group consisting of alkyl having 1-10 carbons, aryl having 6-20 carbons, and deuterated analogs thereof.
5. The compound of claim 1 , wherein R 4 is selected from the group consisting of alkyl having 1-10 carbons, aryl having 6-20 carbons, an electron-withdrawing group, and deuterated analogs thereof.
6. The compound of claim 1 , wherein at least one of R 6 -R 9 is an alkyl or deuterated alkyl having 1-20 carbons.
7. The compound of claim 1 , wherein one of R 8 and R 9 is an aryl or deuterated aryl having 6-20 carbons.
8. The compound of claim 1 , wherein R 6 -R 9 are selected from the group consisting of H and D.
9. The compound of claim 1 , wherein R 2 or R 4 is an electron-withdrawing group.
10. The compound of claim 9 , wherein the electron-withdrawing group is F or a perfluoroalkyl.
11. The compound of claim 9 , wherein at least one of R 6 -R 9 is an alkyl or deuterated alkyl having 1-10 carbons.
12. A compound selected from the group consisting of Compound B2, Compound B3, Compound B5, Compound B6, Compound B7 and Compound B8:
13. An organic electronic device comprising a first electrical contact, a second electrical contact and a photoactive layer therebetween, the photoactive layer comprising a compound having Formula I
R 1-4 are the same or different and are selected from the group consisting of H, D, alkyl, silyl, aryl, deuterated alkyl, deuterated silyl, deuterated aryl, and an electron-withdrawing group;
R 5 is selected from the group consisting of H, D, alkyl, aryl, deuterated alkyl and deuterated aryl; and
R 6 -R 9 are the same or different and are selected from the group consisting of H, D, alkyl, silyl, aryl, deuterated alkyl, deuterated silyl, and deuterated aryl; with the proviso that at least one of R 1-4 is an electron-withdrawing group, and with the proviso that at least one of R 2 or R 4 is selected from the group consisting of alkyl having 1-10 carbons, aryl having 6-20 carbons, an electron-withdrawing group, and deuterated analogs thereof, or R 1 , R 3 , R 8 , or R 9 is selected from the group consisting of alkyl having 1-10 carbons, aryl having 6-20 carbons, and deuterated analogs thereof, or at least one of R 6 or R 7 is selected from the group consisting of alkyl having 1-10 carbons and deuterated analogs thereof.
14. The organic electronic device of claim 13 , wherein the photoactive layer comprises the compound of Formula I and further comprises a host material.
15. The organic electronic device of claim 14 , wherein the photoactive layer consists essentially of the compound of Formula I and a host material.