Hole transport layer compositions and related diode devices
Hole transport layer compositions comprising a silylated aryl amine and a polymeric component, to enhance performance of an associated electroluminescent device.
1. A hole transport composition comprising a polymeric hole transport component and a silylated aryl amine component of a formula selected from
where Ar is arylene; n is an integer ranging from 1 to 4; R 1 -R 7 are independently selected from H and alkyl moieties ranging from C 1 to C 6 , each said moiety comprising a hydrolyzable silyl group, and wherein at least one of R 1 -R 3 and at least one of R 4 -R 7 is one of said alkyl moieties; and wherein the hydrolyzable silyl group comprises three hydrolyzable groups bonded to silicon.
2. The composition of claim 1 wherein R 1 -R 7 are selected from a C 1 -C 6 alkyl moiety comprising a group selected from trihalosilyl and trialkoxysilyl.
3. The compound of claim 2 wherein Ar is phenylene and n is 2.
4. The compound of claim 2 wherein R 1 -R 7 are independently selected from trihalosilylalkyl and trialkoxysilylalkyl moieties.
5. The compound of claim 4 wherein one of R 1 -R 3 is a trichlorosilylpropyl moiety, and one of R 4 -R 7 is a trichlorosilylpropyl moiety.
6. The composition of claim 5 wherein Ar is phenylene and n is 2.
7. The composition of claim 2 wherein said polymeric component is selected from TFB, BT and combinations thereof.
8. The composition of claim 1 wherein said polymeric component is a poly(fluorene).
9. The composition of claim 7 wherein said polymeric component is selected from TFB, BT and combinations thereof.
10. The composition of claim 9 wherein said silylated aryl amine component is selected from a trisilylated triphenylamine compound and TPDSi 2 .
11. The composition of claim 1 , wherein R 1 -R 7 are selected from a C 1 -C 6 alkyl moiety comprising a group selected from trihalosilyl, trialkoxysilyl, dialkoxyhalosilyl, and dihaloalkoxysilyl.
12. A hole transport composition comprising a polymeric component selected from TFB, BT and combinations thereof; and a silylated aryl amine component of a formula
where R 4 -R 7 are independently selected from H and alkyl moieties ranging from C 1 about C 6 , each said alkyl moiety further comprising a hydrolyzable silyl group, and wherein at least one of R 4 -R 7 is one of said alkyl moieties.
13. The composition of claim 12 wherein each of R 4 -R 7 comprises a C 2 -C 4 alkyl moiety.
14. The composition of claim 12 , wherein said polymeric component comprises TFB.
15. The composition of claim 14 , wherein each of R 4 and R 5 is H, and each of R 6 and R 7 comprises a C 2 -C 4 alkyl moiety.
16. The composition of claim 15 , wherein said aryl amine component is TPDSi 2 .
17. A hole transport composition comprising a polymeric hole transport component and a silylated aryl amine component of a formula selected from
where Ar is arylene; n is an integer ranging from 1 to 4; R 1 -R 7 are independently selected from H and alkyl moieties ranging from C 1 to C 6 , each said moiety comprising a hydrolyzable silyl group, and wherein at least one of R 1 -R 3 and at least one of R 4 -R 7 is one of said alkyl moieties;
and wherein said polymeric component is a poly(fluorene).