Phenothiazines, S-oxides, and S,S-dioxides as well as phenoxazines as emitters for OLEDs

1. An organic light-emitting diode comprising as emitter substances or hole and exciton blockers compounds based on Formula I

in which:

X is SO 2 , SO;

R 1 is H, alkyl, aryl, heteroaryl;

or

R 2 ,

R 3 are each independently H, alkyl, aryl or COR 31 , where R 2 and R 3 are not at the same time H, wherein aryl is selected from the group consisting of phenyl, naphthyl, indanyl, 1,2-dihydronaphthenyl, 1,4-dihydronaphthenyl, indenyl and 1,2,3,4-tetrahydronaphthyl, which may each be unsubstituted or substituted by one or more further radicals, with the proviso that when aryl is substituted phenyl, further radicals are selected from the group consisting of alkyl, alkoxy, and halogen,

or

at least one of the R 2 or R 3 radicals is a radical of formula II

where the further R 2 or R 3 radical has the same definition or is H, alkyl, aryl, NR 22 R 23 ; the further R 2 or R 3 radical is optionally likewise a radical of formula II,

or

one of the R 2 or R 3 radicals is a radical of formula III

where the further R 2 or R 3 radical is H, alkyl, aryl, NR 22 R 23 ;

R 4 , R 5 , R 13 , R 14 , R 15 , R 16 , R 18 , R 19 , R 20 , R 21

are each independently alkyl, aryl, alkenyl, alkynyl or alkylaryl;

R 17 is halogen, alkoxy, alkyl, aryl, alkenyl, alkynyl or alkylaryl;

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

o, p, q, r, s, t, u, v, w

are each 0, 1, 2, 3 or 4;

z is 1 or 2;

R 6 , R 7 are each independently H, alkyl, aryl, alkenyl, alkynyl, alkylaryl, alkoxy, aryloxy or NR 22 R 23 ;

R 8 , R 9 , R 10 , R 11

are each independently H, alkyl, aryl, alkenyl, alkynyl or alkylaryl;

R 12 is H, alkyl or aryl;

R 22 , R 23

are each independently H, alkyl, aryl;

or R 22 and R 23 together form a cyclic radical;

Y, Z, W are each S, SO 2 ; O, SO; and

Ar is arylene; and

R 31 is H, alkyl or aryl.

2. The organic light-emitting diode according to claim 1 , wherein the emitter substance or the hole or exciton blocker of formula I is used, in which the symbols and radicals are each defined as follows:

X is S or SO 2 ;

R 1 is H, methyl, ethyl, unsubstituted phenyl or 4-alkoxyphenyl; or phenyl, 4-methoxyphenyl, thienyl or pyridyl substituted by one OH, OC(O)Ph, OCH 2 Ph or N-phenylbenzimidazolyl group, two F radicals, three CH 3 groups or

R 2 , R 3 are each H, unsubstituted phenyl, 1-naphthyl, 2-naphthyl or CHO, where at least one of the R 2 or R 3 radicals is unsubstituted phenyl, 1-naphthyl or 2-naphthyl,

or

R 2 and R 3 are each

or

R 2 is H and R 3 is

m, n, o, p, q, r, s, t, u, v and w

are each 0, 1 or 2, preferably 0;

z is 1 or 2;

R 6 , R 7 are each unsubstituted phenyl;

R 8 , R 9 , R 10 , R 11

are each H;

R 12 is H, methyl, ethyl, unsubstituted phenyl or 4-alkoxyphenyl or phenyl substituted by three CH 3 groups;

R 17 is alkyl, alkoxy, preferably methoxy;

R 22 , R 23 are each aryl;

Y, Z, W are each S or SO 2 ; and

Ar is phenylene, naphthylene or biphenylene.

3. An organic light-emitting diode comprising as emitter substance a compound selected from the group consisting of compounds of formulae Ia, Ib, Ic, Id, Ie, If and Ig

in which:

X, Y, Z, W, Q

are each independently S or SO 2 ; and

R 1 , R 12 are each H, methyl, ethyl or unsubstituted phenyl;

R 2 , R 3 are each H or unsubstituted phenyl, where at least R 2 or R 3 is unsubstituted phenyl;

R 6 is methyl or unsubstituted phenyl;

R 17 is methoxy;

s is 0 or 2, where the substituents, in the case that s=2, are optionally arranged in the 2- and the 5-position; and

Ph is unsubstituted phenyl.

4. An organic light-emitting diode comprising as emitter substance a compound selected from the group consisting of compounds of formulae Ih and Ii;

in which

X, Y are each independently S or SO 2 ;

R 1 is phenyl, 4-methoxyphenyl, thienyl or pyridyl substituted by one OH, OC(O)Ph, OCH 2 Ph or N-phenylbenzimidazolyl group, three CH 3 groups or two F radicals;

R 2 is H;

R 3 is H or CHO; and

R 12 is phenyl substituted by three CH 3 groups.

5. An organic light-emitting diode comprising a hole or exciton blocker selected from the group consisting of compounds of the formulae Ia, Id, Ie, Ig and Ih

in which:

X, Z, Q are each independently S or SO 2 ; and

R 1 is H, methyl, ethyl or unsubstituted phenyl, or phenyl, 4-methoxyphenyl, thienyl or pyridyl substituted by one OH, OC(O)Ph, OCH 2 Ph or N-phenylbenzimidazolyl group, three CH 3 groups or two F radicals;

R 2 , R 3 are each H or unsubstituted phenyl, where at least R 2 or R 3 is unsubstituted phenyl,

or, in the case that R 1 is phenyl, 4-methoxyphenyl, thienyl or pyridyl substituted by one OH, OC(O)Ph, OCH 2 Ph or N-phenylbenzimidazolyl group, three CH 3 groups or two F radicals,

R 2 is H; and

R 3 is H or CHO; preferably H.

6. An organic light-emitting diode comprising a light-emitting layer, wherein the light-emitting layer comprises at least one emitter substance of the formula I according to claim 1 .

7. A light-emitting layer comprising at least one emitter substance of the formula I according to claim 1 .

8. A light-emitting layer consisting of one or more emitter substances of the formula I according to claim 1 .

9. An organic light-emitting diode comprising a light-emitting layer according to claim 7 .

10. An organic light-emitting diode comprising a blocking layer for holes and excitons, wherein the blocking layer for holes and excitons comprises at least one compound of the formula I according to claim 1 .

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

12. A phenothiazine S,S-dioxide derivative selected from the group consisting of compounds of formulae XIV, XVI, XVII, XVIII, XIX, XX and XXII

in which:

R 1 , R 12 are each H, Me, Et or unsubstituted phenyl;

R 6 is Me or unsubstituted phenyl;

R 17 is methoxy;

s is 0 or 2, where the substituents, in the case that s=2, are optionally arranged in the 2- and the 5-position;

Ph is unsubstituted phenyl;

naphthyl is 1- or 2-naphthyl; and

R 28 is H or —CHO.

13. A phenothiazine derivative selected from the group consisting of compounds of formulae XXIII, XXV, XXVI, XXVII and XXIX

in which:

R 1 , R 12 are each H, Me, Et or unsubstituted phenyl;

Ph is unsubstituted phenyl;

naphthyl is 1- or 2-naphthyl; and

R 29 , R 30 are each —CHO or

14. A phenothiazine S-oxide derivative of formula XXX

in which:

R 1 is H, Me, Et or unsubstituted phenyl; and

naphthyl is 1- or 2-naphthyl.

15. A phenothiazine S,S-dioxide derivative selected from the group consisting of compounds of formulae XXXI and XXXII

in which

R 1 is phenyl, 4-methoxyphenyl, 2-thienyl or pyridyl substituted by one OH, OC(O)Ph, OCH 2 Ph or N-phenylbenzimidazolyl group, three CH 3 groups or two F radicals,

R 3 is CHO, and

R 12 is a phenyl substituted by three CH 3 groups.

16. A phenothiazine derivative of formula XXXIII

in which

R 1 is phenyl or pyridyl substituted by one OH, OC(O)Ph, OCH 2 Ph or N-phenylbenzimidazolyl group, three CH 3 groups or two F radicals, and

R 3 is CHO.

17. An OLED comprising at least one phenothiazine S,S-dioxide derivative according to claim 12 .

18. A light-emitting layer comprising at least one phenothiazine S,S-dioxide derivative according to claim 12 .

19. An OLED comprising a light-emitting layer according to claim 18 .

20. A hole- and exciton-blocking layer comprising at least one phenothiazine S,S-dioxide derivative of formulae XIV, XVII, XIX, or XXII according to claim 12 .

21. An OLED comprising a hole- and exciton-blocking layer according to claim 20 .

22. A device selected from the group consisting of stationary visual display units of computers and televisions, visual display units in printers, kitchen appliances and advertising panels, illuminations, information panels and mobile visual display units in mobile telephones, laptops, digital cameras, vehicles and destination displays on buses and trains, comprising an organic light-emitting diode according to claim 10 .

23. An OLED comprising at least one phenothiazine S,S-dioxide derivative according to claim 15 .

24. A light-emitting layer comprising at least one phenothiazine S,S-dioxide derivative according to claim 15 .

25. A hole- and exciton-blocking layer comprising at least one phenothiazine S,S-dioxide derivative of formulae XXXI, or XXXIII according to claim 15 .

26. An OLED comprising at least one phenothiazine derivative according to claim 13 .

27. A light-emitting layer comprising at least one phenothiazine derivative according to claim 13 .

28. A hole- and exciton-blocking layer comprising at least one phenothiazine derivative of formulae XXIII, XXVI, XXXVIIII, or XXIX according to claim 13 .

29. An OLED comprising at least one phenothiazine derivative according to claim 16 .

30. A light-emitting layer comprising at least one phenothiazine derivative according to claim 16 .

31. A hole- and exciton-blocking layer comprising at least one phenothiazine derivative of formula XXXIII according to claim 16 .

32. An OLED comprising at least one phenothiazine S-oxide derivative according to claim 14 .

33. A light-emitting layer comprising at least one phenothiazine S-oxide derivative according to claim 14 .

34. An organic light-emitting diode comprising as emitter substances or hole and exciton blockers compounds of formula I

in which:

X is S or O;

R 1 is H, alkyl, aryl, heteroaryl;

or

R 2 ,

R 3 are each independently H, alkyl, unsubstituted phenyl, 1-naphthyl, 2-naphthyl, or COR 31 , where R 2 and R 3 are not at the same time H,

or

at least one of the R 2 or R 3 radicals is a radical of formula II

where the further R 2 or R 3 radical has the same definition or is H, alkyl, aryl, NR 22 R 23 ; the further R 2 or R 3 radical is optionally likewise a radical of formula II,

or

one of the R 2 or R 3 radicals is a radical of formula III

where the further R 2 or R 3 radical is H, alkyl, aryl, NR 22 R 23 ;

R 4 , R 5 , R 13 , R 14 , R 15 , R 16 , R 18 , R 19 , R 20 , R 21

are each independently alkyl, aryl, alkenyl, alkynyl or alkylaryl;

R 17 is halogen, alkoxy, alkyl, aryl, alkenyl, alkynyl or alkylaryl;

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

o, p, q, r, s, t, u, v, w

are each 0, 1, 2, 3 or 4;

z is 1 or 2;

R 6 , R 7 are each independently H, alkyl, aryl, alkenyl, alkynyl, alkylaryl, alkoxy, aryloxy or NR 22 R 23 ;

R 8 , R 9 , R 10 , R 11

are each independently H, alkyl, aryl, alkenyl, alkynyl or alkylaryl;

R 12 is H, alkyl or aryl;

R 22 , R 23

are each independently H, alkyl, aryl;

or R 22 and R 23 together form a cyclic radical;

Y, Z, W are each S, SO 2 ; O, SO; and

Ar is arylene; and

R 31 is H, alkyl or aryl.