Electroluminescent device

An electroluminescent device, comprising in the light emitting layer a compound of the formula

• and a phosphorescent metal complex of Ir, Pt, Eu, Ru, Rh, Pd, Ag, Re, Os and Au as dopant, wherein R81 and R88 are independently of each other H, —OR201, —SR202 and/or —NR203R204, C1-C24alkyl;
• C1-C24alkyl, which is substituted by E and/or interrupted by D;
• C2-C18alkenyl, C2-C18alkenyl, which is substituted by E, C3-C8cycloalkyl, C3-C8cycloalkyl, which is substituted by G, aryl, aryl, which is substituted by G, heteroaryl, or heteroaryl, which is substituted by G, silyl, SiR62R63R64, —CN, cyclic ether, —B(OR65)2 and/or halogen, wherein
• R201 is hydrogen, C1-C24alkyl, C1-C24alkyl, which is substituted by E and/or interrupted by D;
• C2-C12alkenyl, C3-C6alkenoyl, C3-C8cycloalkyl, or benzoyl, each of which may optionally be substituted by one or more groups C1-C6alkyl, halogen, —OH and/or C1-C4alkoxy;
• phenyl, naphthyl, phenanthryl, anthranyl, or pyrenyl, each of which may optionally be substituted by halogen, —OH, C1-C12alkyl, C1-C12alkoxy, phenoxy, C1-C12alkylsulfanyl, phenylsulfanyl, —N(C1-C12alkyl)2 and/or diphenylamino;
• R202 is C1-C24alkyl, C1-C24alkyl, which is substituted by E and/or interrupted by D;
• C2-C12alkenyl, C1-C8alkanoyl, C2-C12alkenyl, C3-C6alkenoyl;
• C3-C8cycloalkyl, or benzoyl, each of which may optionally be substituted by one or more groups C1-C6alkyl, halogen, —OH, C1-C4alkoxy or C1-C4alkylsulfanyl;
• phenyl, naphthyl, phenanthryl, anthranyl, or pyrenyl, each of which may optionally be substituted by halogen, C1-C12alkyl, C1-C12alkoxy, phenyl-C1-C3alkyloxy, phenoxy, C1-C12alkylsulfanyl, phenylsulfanyl, —N(C1-C12alkyl)2, diphenylamino, —(CO)O(C1-C8alkyl), —(CO)—C1-C8alkyl, or (CO)N(C1-C8alkyl)2;
• R203 and R204 are independently of each other hydrogen, C1-C24alkyl, C1-C24alkyl, which is substituted by E and/or interrupted by D;
• C2-C2alkenyl, C3-C8cycloalkyl, or benzoyl, each of which may optionally be substituted by one or more groups C1-C6alkyl, halogen, —OH, or C1-C4alkoxy;
• phenyl-C1-C3alkyl, C1-C8alkanoyl, C3-C12alkenoyl;
• phenyl naphthyl, phenanthryl, anthranyl, or pyrenyl, each of which is optionally substituted by C1-C12alkyl, benzoyl or C1-C12alkoxy;
• or R203 and R204 together are C2-C8alkylene, or branched C2-C8alkylene optionally interrupted by —O—, —S—, or —NR205— and/or optionally substituted by hydroxyl, C1-C4alkoxy, C2-C4alkanoyloxy, or benzoyloxy, wherein the ring formed by R203 and R204 can optionally be condensed one or two times by phenyl which can be substituted one to three times with C1-C8-alkyl, C1-C8-alkoxy, halogen, or cyano;
• R205 is hydrogen, C1-C24alkyl, C1-C24alkyl, which is substituted by E and/or interrupted by D;
• C2-C5alkenyl, C3-C8cycloalkyl, phenyl-C1-C3alkyl, C1-C8alkanoyl, C3-C12alkenoyl;
• benzoyl;
• phenyl, naphthyl, phenanthryl, anthranyl, or pyrenyl, each of which is optionally substituted by C1-C12alkyl, benzoyl, or C1-C12alkoxy;
• D is —CO—, —COO—, —OCOO—, —S—, —SO—, —SO2—, —O—, —NR5—, —SiR61R62—, —POR5—, —CR63═CR64—, or —C≡—;
• E is halogen, C6-C14aryl, which may be substituted by —OR5, —SR5, —NR5R6, SiR62′R63′R64′, wherein R62′, R63′ and R64′ are independently of each other a C1-C8alkyl group, a C6-C24aryl group or a C7-C12aralkyl group, —CN, cyclic ether and/or —B(OR65)2, wherein R65 is hydrogen, C1-C24alkyl, C3-C8cycloalkyl, C7-C24aralkyl, C2-C18alkenyl, C2-C24alkynyl, hydroxy, mercapto, C1-C24alkoxy, C1-C24alkylthio, C6-C30aryl, C2-C30heteroaryl, halogen, haloalkane, silyl, siloxanyl, and an alicyclic ring formed with adjacent substituents R65;
• —OR5, —SR5, —NR5R6, —COR8, —COOR7, —CONR5R6, —CN, halogen, silyl, C1-C18alkyl, or heteroaryl,
• G is E, or C1-C18alkyl, wherein R5 and R6 are independently of each other H, C6-C18aryl;
• C6-C18aryl which is substituted by C1-C18alkyl, C1-C18alkoxy, or silyl;
• C1-C18alkyl or C1-C18alkyl which is interrupted by —O—;
• or
• R5 and R6 together form a five or six membered ring,
• R7 is H, C6-C18aryl, C7-C12alkylaryl, which are optionally substituted by C1-C18alkyl, or C1-C18alkoxy;
• C1-C18alkyl;
• or C1-C18alkyl which is interrupted by —O—;
• R8 is C6-C18aryl;
• C6-C18aryl which is substituted by C1-C18alkyl, or C1-C18alkoxy;
• C1-C18alkyl, C7-C12alkylaryl, or C1-C18alkyl which is interrupted by —O—;
• R61 and R62 are independently of each other C6-C18aryl;
• C6-18aryl which is substituted by C1-C18alkyl, C1-C18alkoxy;
• or C1-C18alkyl which is interrupted by —O—,
• R63 and R64 are independently of each other H, C6-C18aryl;
• C6-18aryl which is substituted by C1-C18alkyl, C1-C18alkoxy;
• or C1-C18alkyl which is interrupted by —O—,
• wherein
• R82, R83, R86 and R87 are independently of each other a group of the formula —(W1)a—(W2)b—W3,
• a and b are 0, or 1,
• W1 and W2 are independently of each other a group of formula
• and
• R11, R11′, R12, R12′, R13, R13′, R15, R15′, R16, R16′, R17 and R17′ are independently of each other H, E, tri(C1-C8alkyl)silyl, C6-C18aryl;
• C6-C18aryl which is substituted by G;
• C1-C18alkyl;
• C1-C18alkyl which is substituted by E and/or interrupted by D;
• C1-C18alkoxy;
• or C1-C18alkoxy which is substituted by E and/or interrupted by D;
• C7-C18aralkyl;
• or C7-C18aralkyl which is substituted by G;
• R18 and R19 are independently of each other C1-C18alkyl;
• C1-C18alkoxy, C6-C18aryl;
• C7-C18aralkyl;
• or R18 and R19 together form a ring, which can optionally be substituted by C1-C8alkyl,
• W3 is a group of formula —NR70R71, wherein R70 and R71 are independently of each other a group of formula
• wherein R72, R73 and R74 are independently of each other hydrogen, C1-C8alkyl, a hydroxyl group, a mercapto group, C1-C8alkoxy, C1-C8alkylthio, halogen, halo-C1-C8alkyl, a cyano group, an aldehyde group, a ketone group, a carboxyl group, an ester group, a carbamoyl group, an amino group, a nitro group, a silyl group or a siloxanyl group, or R70 and R71 together with the nitrogen atom to which they are bonded form a five or six membered heterocyclic ring, which can be condensed by one or two optionally substituted phenyl groups;
• with the proviso that b is 1, if R70 and R71 are independently of each other a group of formula