Siloles substituted by fused ring systems and use thereof in organic electronics

1. A compound of the formula (Ib)

in which:

A′ is a fused ring system formed from at least 3 fused rings which each independently have 4 to 10 ring members and may be saturated or mono- or polyunsaturated and may be unsubstituted or substituted by one or more substituents selected from alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl and groups with donor or acceptor action, wherein

the fused ring system has at least one heteroatom-containing group in the fused ring system itself or in at least one substituent;

are each independently an Si-comprising ring which has 4 to 10, wherein the ring may be saturated or mono- or polyunsaturated and, in addition to the silicon atom, may have one or more further heteroatom-containing groups and may be unsubstituted or substituted by one or more substituents selected from alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl and groups with donor or acceptor action, wherein the Si-comprising ring may additionally be part of a fused ring system formed from at least 2, wherein the further rings—in addition to the Si-comprising ring—in the fused ring system may each independently be saturated or mono- or polyunsaturated and may be unsubstituted or substituted by one or more substituents selected from alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl and groups with donor or acceptor action, and may have one or more heteroatom-containing groups;

R 1 , R 1′ are each independently a fused ring system formed from at least 3 fused rings which each independently have 4 to 10 ring members and may be saturated or mono- or polyunsaturated and unsubstituted or substituted by one or more substituents selected from alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, SiR 2 R 3 R 4 and groups with donor or acceptor action, wherein

the fused ring system has at least one heteroatom in the fused ring system itself or in at least one substituent, alkyl, cycloalkyl, heterocycloalkyl, aryl or heteroaryl, wherein the aforementioned groups may be unsubstituted or substituted by one or more substituents selected from alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, and groups with donor or acceptor action.

2. An electronic device comprising the compound of according to claim 1 .

3. A matrix material and/or hole/exciton blocker material comprising the compound of claim 1 .

4. An organic light-emitting diode comprising the compound of claim 1 .

5. A light-emitting layer comprising at least one emitter material and the compound of claim 1 .

6. An organic light-emitting diode comprising an anode An and a cathode Ka and a first light-emitting layer E arranged between the anode An and the cathode Ka, and optionally, as a further layer, at least one blocking layer for holes/excitons, characterized in that the organic light-emitting diode comprises the compound of the formula (Ib) according to claim 1 , which is present in the light-emitting layer and/or in the at least in the blocking layer for holes/excitons—if present.

7. A device selected from the group consisting of stationary visual display units such as visual display units of computers, televisions, visual display units in printers, kitchen appliances and advertising panels, illuminations, information panels, and mobile visual display units such as visual display units in cellphones, laptops, digital cameras, vehicles, and destination displays on buses and trains, comprising at least one organic light-emitting diode according to claim 6 .

8. The light-emitting diode according to claim 6 , comprising at least one second light-emitting layer arranged between the anode An and the cathode Ka.

9. The light-emitting diode according to claim 8 , wherein the second light-emitting layer comprises a compound of formula (Ib).

10. The light-emitting diode according to claim 8 , wherein the second light-emitting layer comprises a compound of formula (I)

in which:

A is a fused ring system formed from at least 3 fused rings which each independently have 4 to 10 ring members and may be saturated or mono- or polyunsaturated and unsubstituted or substituted by one or more substituents selected from alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, SiR 2 R 3 R 4 and groups with donor or acceptor action, wherein

the fused ring system has at least one heteroatom in the fused ring system itself or in at least one substituent;

is an Si-containing ring which has 4 to 10 ring members, where the ring may be saturated or mono- or polyunsaturated and, in addition to the silicon atom, may have one or more further heteroatoms, and may be unsubstituted or substituted by one or more substituents selected from alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl and substituents with donor or acceptor action, wherein the Si-containing ring may additionally be part of a fused ring system formed from at least two rings, wherein the further rings in the fused ring system may each independently be saturated or mono- or polyunsaturated and unsubstituted or substituted by one or more substituents selected from alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, and substituents with donor or acceptor action, and may have one or more heteroatoms;

R 1 is A or alkyl, cycloalkyl, heterocycloalkyl, aryl or heteroaryl;

R 2 , R 3 , R 4

are each independently alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, where the R 2 , R 3 and R 4 moieties or two of the R 2 , R 3 and R 4 moieties may additionally together form a fused ring system composed of 2 to 6 rings each of which may be saturated or mono- or polyunsaturated and may be unsubstituted or substituted by one or more substituents selected from alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl and a group with donor or acceptor action.

11. The light-emitting diode according to claim 8 , which has an overall emission composed of the emission of the first light-emitting layer E and of the second light emitting layer.

12. The light-emitting diode according to claim 11 , wherein the overall emission comprises white light.

13. A matrix material and/or hole/exciton blocker material comprising a compound represented by formula (I)

in which:

A has the following general formula Aa

in which:

X is S, O, NR 5 , SO, SO 2 or PR 6 ;

Y is a bond or NR 5 , CR 7 R 8 , O, SO, SO 2 or S;

R 5 is cycloalkyl, heterocycloalkyl, aryl or heteroaryl;

R 6 is alkyl, cycloalkyl, heterocycloalkyl, aryl or heteroaryl;

R 7 , R 8 are each independently hydrogen, alkyl, cycloalkyl, heterocycloalkyl, aryl or heteroaryl; and

in each case independently is a fused ring which has 5 to 6 ring members and, in addition to the double bond already present, may have one or more double bonds and may be unsubstituted or substituted by one or more substituents, selected from alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, SiR 2 R 3 R 4 and groups with donor or acceptor action, wherein the fused ring having 5 or 6 ring atoms may additionally be annulated to one or more further fused rings having 5 or 6 ring atoms;

is an Si-containing ring which has 4 to 10 ring members, where the ring may be saturated or mono- or polyunsaturated and, in addition to the silicon atom, may have one or more further heteroatoms, and may be unsubstituted or substituted by one or more substituents selected from alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl and substituents with donor or acceptor action, wherein the Si-containing ring may additionally be part of a fused ring system formed from at least two rings, wherein the further rings in the fused ring system may each independently be saturated or mono- or polyunsaturated and unsubstituted or substituted by one or more substituents selected from alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, and substituents with donor or acceptor action, and may have one or more heteroatoms;

R 1 is a fused ring system formed from at least 3 fused rings which each independently have 4 to 10 ring members and may be saturated or mono- or polyunsaturated and unsubstituted or substituted by one or more substituents selected from alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, SiR 2 R 3 R 4 and groups with donor or acceptor action, wherein

the fused ring system has at least one heteroatom in the fused ring system itself or in at least one substituent or alkyl, cycloalkyl, heterocycloalkyl, aryl or heteroaryl;

R 2 , R 3 , R 4

are each independently alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, where the R 2 , R 3 and R 4 moieties or two of the R 2 , R 3 and R 4 moieties may additionally together form a fused ring system composed of 2 to 6 rings, each of which may be saturated or mono- or polyunsaturated and may be unsubstituted or substituted by one or more substituents selected from alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl and a group with donor or acceptor action.

14. The material according to claim 13 , wherein the compound of the formula (I) has the following formula (Ia):

in which:

X is S, O, NR S , SO, SO 2 or PR 6 ;

Y is a bond, NR 5 , CR 7 R 8 , O, SO, SO 2 or S;

Q 1 to Q 8 are each independently CR 9 or N, wherein one of the Q 1 to Q 8 groups forms a bond to the silicon atom of the

group, and this group is C;

R 5 is cycloalkyl, heterocycloalkyl, aryl or heteroaryl;

R 6 is alkyl, cycloalkyl, heterocycloalkyl, aryl or heteroaryl,

R 7 , R 8 are each independently hydrogen, alkyl, cycloalkyl, heterocycloalkyl, aryl or heteroaryl;

R 9 is independently hydrogen, alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, SiR 2 R 3 R 4 or a group with donor or acceptor action;

R 2 , R 3 , R 4

are each independently alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, wherein the R 2 , R 3 and R 4 or two of the R 2 , R 3 and R 4 moieties may additionally together form a fused ring system composed of 2 to 6 rings, each of which may be saturated or mono- or polyunsaturated and may be unsubstituted or substituted by one or more substituents selected from alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl and a group with donor or acceptor action;

Z is a bond or NR 14 , CR 15 R 16 , O, SO, SO 2 , Si or S;

R 14 is alkyl, cycloalkyl, heterocycloalkyl, aryl or heteroaryl;

R 15 , R 16 are each independently hydrogen, alkyl, cycloalkyl, heterocycloalkyl, aryl or heteroaryl, preferably alkyl or aryl;

R 17 , R 18 are each independently alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, or a group with donor or acceptor action, or two adjacent R 17 moieties and/or two adjacent R 18 moieties in each case independently form, together with the two particular carbon atoms to which they are linked, a cyclic moiety which has 5 or 6 ring atoms and may have one, two or three double bonds and may have one or two heteroatom-containing groups selected from N, O, SO, SO 2 or S, and may be unsubstituted or substituted by one or more substituents selected from alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl and groups with donor or acceptor action;

n, m are each independently 0, 1, 2, 3 or 4;

R 1 is

alkyl, cycloalkyl, heterocycloalkyl, aryl or heteroaryl.

15. An organic light-emitting diode comprising the material of claim 13 .

16. A light-emitting layer comprising at least one emitter material and the material of claim 13 .

17. The material according to claim 13 , wherein the A group in formula (I) has the following formula Aaa

in which:

X is S, O, NR 5 , SO, SO 2 or PR 6 ;

Y is a bond or NR 5 , CR 7 R 8 , O, SO, SO 2 or S;

Q 1 to Q 8 are each independently CR 9 , N, wherein one via of the Q 1 , Q 2 , Q 3 , Q 4 , Q 5 , Q 5 , Q 7 , Q 8 , groups a linkage to the silicon atom of the

group is effected and this Q 1 , Q 2 , Q 3 , Q 4 , Q 5 , Q 6 , Q 7 or Q 8 group is C;

R 5 , is cycloalkyl, heterocycloalkyl, aryl or heteroaryl;

R 6 is alkyl, cycloalkyl, heterocycloalkyl, aryl or heteroaryl,

R 7 , R 8 are each independently hydrogen, alkyl, cycloalkyl, heterocycloalkyl, aryl or heteroaryl;

R 9 is hydrogen, alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, SiR 2 R 3 R 4 , groups with donor or acceptor action,

R 2 , R 3 , R 4

are each independently alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, wherein the R 2 , R 3 and R 4 moieties or two of the R 2 , R 3 and R 4 moieties may additionally together form a fused ring system composed of 2 to 6 rings, each of which may be saturated or mono- or polyunsaturated and may be unsubstituted or substituted by one of the more substituents selected from alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl and a group with donor or acceptor action.

18. The material according to claim 17 , wherein R 9 in Q 1 , Q 2 , Q 4 , Q 5 , Q 6 and Q 8 is hydrogen and R 9 in Q 3 is hydrogen or SiR 2 R 3 R 4 and Q 7 is C and is linked to the silicon atoms of the

group.

19. The material according to claim 13 , wherein the

group in formula (I) is defined as follows:

an Si-comprising ring which has 5 or 6 ring members, wherein the ring is at least diunsaturated and, in addition to the silicon atom, contains no or one further heteroatom-containing group selected from S, O, SO, SO 2 and N, and may be unsubstituted or substituted by one or more substituents selected from alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl and groups with donor or acceptor action, wherein the Si-comprising ring may be part of a fused ring system formed from 2 or 3, rings, wherein the further rings—in addition to the Si—comprising ring—in the fused ring system may each independently be saturated or mono- or polyunsaturated and may be unsubstituted or substituted by one or more substituents selected from alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl and groups with donor or acceptor action, and may have one or two heteroatom-containing groups selected from O, S, SO, SO 2 and N.

20. The material according to claim 19 , wherein the

group in formula (I) has the following formula (Sia)

in which:

Z is a bond or NR 14 , CR 15 R 16 , O, SO, SO 2 , Si or S,

R 10 to R 13 are each independently hydrogen, alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl and groups with donor or acceptor action, or R 10 and R 11 and/or R 12 and R 13 and/or R 10 and R 12 in each case independently form, together with the two particular carbon atoms of the Si-comprising ring in the formula (Sia) to which they are linked, a cyclic moiety which has 5 or 6 ring atoms and may have one, two or three double bonds and may have one or two heteroatom-containing groups selected from N, O, SO, SO 2 or S, and may be unsubstituted or substituted by one or more substituents selected from alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl and groups with donor or acceptor action, wherein the cyclic moiety having 5 or 6 ring atoms may additionally be anullated to one or more further cyclic moieties having 5 or 6 ring atoms;

R 14 is alkyl, cycloalkyl, heterocycloalkyl, aryl or heteroaryl; and

R 15 , R 16 are each independently hydrogen, alkyl, cycloalkyl, heterocycloalkyl, aryl or heteroaryl.

21. The material according to claim 20 , wherein the

group in formula (I) has the following formula (Siaa)

in which:

Z is a bond or NR 14 , CR 15 R 16 , O, SO, SO 2 , Si or S,

R 14 is alkyl, cycloalkyl, heterocycloalkyl, aryl or heteroaryl; and

R 15 , R 16 are each independently hydrogen, alkyl, cycloalkyl, heterocycloalkyl, aryl or heteroaryl;

R 17 , R 18 are each independently alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, or groups with donor or acceptor action, or two adjacent R 17 moieties and/or two adjacent R 18 moieties in each case independently form, together with the two particular carbon atoms to which they are linked, a cyclic moiety which has 5 or 6 ring atoms and may have one, two or three double bonds and may have one or two heteroatom-containing groups selected from N, O, SO, SO 2 or S, and may be unsubstituted or substituted by one or more substituents selected from alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl and groups with donor or acceptor action;

n, m are each independently 0, 1, 2, 3 or 4.

22. An organic light-emitting diode comprising an anode An and a cathode Ka and a first light-emitting layer E arranged between the anode An and the cathode Ka, and optionally, as a further layer, at least one blocking layer for holes/excitons, characterized in that the organic light-emitting diode comprises the material according to claim 13 , which is present in the light-emitting layer and/or in the at least in the blocking layer for holes/excitons—if present.

23. A device selected from the group consisting of stationary visual display units such as visual display units of computers, televisions, visual display units in printers, kitchen appliances and advertising panels, illuminations, information panels, and mobile visual display units such as visual display units in cellphones, laptops, digital cameras, vehicles, and destination displays on buses and trains, comprising at least one organic light-emitting diode according to claim 22 .

24. The light-emitting diode according to claim 22 , comprising at least one second light-emitting layer arranged between the anode An and the cathode Ka.

25. The light-emitting diode according to claim 24 , wherein the second light-emitting layer comprises a compound of the formula (I).

26. The light-emitting diode according to claim 24 , wherein the second light-emitting layer comprises a compound of formula (Ib)

in which:

A′ is a fused ring system formed from at least 3 fused rings which each independently have 4 to 10 ring members and may be saturated or mono- or polyunsaturated and may be unsubstituted or substituted by one or more substituents selected from alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl and groups with donor or acceptor action, wherein

the fused ring system has at least one heteroatom-containing group in the fused ring system itself or in at least one substituent;

are each independently an Si-comprising ring which has 4 to 10 ring members, wherein the ring may be saturated or mono- or polyunsaturated and, in addition to the silicon atom, may have one or more further heteroatom-containing groups and may be unsubstituted or substituted by one or more substituents selected from alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl and groups with donor or acceptor action, wherein the Si-comprising ring may additionally be part of a fused ring system formed from at least 2 fused rings, wherein the further rings—in addition to the Si-comprising ring—in the fused ring system may each independently be saturated or mono- or polyunsaturated and may be unsubstituted or substituted by one or more substituents selected from alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl and groups with donor or acceptor action, and may have one or more heteroatom-containing groups;

R 1 , R 1′ are each independently a fused ring system formed from at least 3 fused rings which each independently have 4 to 10 ring members and may be saturated or mono- or polyunsaturated and substituted or substituted by one or more substituents selected from alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, SiR 2 R 3 R 4 and groups with donor or acceptor action, wherein the fused ring system has at least one heteroatom in the fused ring system itself or in at least one substituent, alkyl, cycloalkyl, heterocycloalkyl, aryl or heteroaryl, wherein the aforementioned groups may be unsubstituted or substituted by one or more substituents selected from alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, and groups with donor or acceptor action.

27. The light-emitting diode according claim 24 , which has an overall emission composed of the emission of the first light-emitting layer E and of the second light-emitting layer.

28. The light-emitting diode according to claim 27 , wherein the overall emission comprises white light.