Use of dibenzofurans and dibenzothiophenes substituted by nitrogen-bonded five-membered heterocyclic rings in organic electronics

A compound of formula (III)

• wherein
• X is S or O;
• R2 are each independently aryl, heteroaryl, alkyl, cycloalkyl, heterocycloalkyl, a crosslinkable or polymerizable group bonded via a spacer, —NR3R4, —P(O)R5R6, —PR7R8, —S(O)2R9, —S(O)R10, —SR11 or —OR12,
• R3, R4 are each independently aryl, heteroaryl, alkyl, cycloalkyl or heterocycloalkyl, a crosslinkable or polymerizable group bonded via a spacer,
• or R3 and R4 form, together with the nitrogen atom, a cyclic radical which has 3 to 10 ring atoms 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 and/or may be fused to one or more further cyclic radicals having 3 to 10 ring atoms, wherein the fused radicals may be unsubstituted or substituted by one or more substituents selected from alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, a crosslinkable or polymerizable group bonded via a spacer, and a group with donor or acceptor action;
• R5, R6, R7, R8, R9, R10, R11 and R12 are each independently aryl,
• heteroaryl, alkyl, cycloalkyl or heterocycloalkyl, a crosslinkable or
• polymerizable group bonded via a spacer,
• R13, R14 are each independently aryl, heteroaryl, alkyl, cycloalkyl, heterocycloalkyl, a crosslinkable or polymerizable group bonded via a spacer, —NR3R4, —P(O)R5R6, —PR7R8, —S(O)2R9, —S(O)R10, —SR11 or —OR12,
• m is 0, 1, 2 or 3,
• p is 1 or 2, wherein m+p is ≦4,
• q is 0, 1, 2, 3 or 4,
• r is 0,1, 2, 3 or 4,
• s is 1,2, 3 or 4,
• C is a five-membered saturated or unsaturated heterocyclic radical of formula (II)
• wherein
• A1 is independently CRa, N or NRb;
• A2 is independently CRc, N or NRd;
• A3 is independently CRe, N or NRf;
• A4 is independently CRg, N or NRh
• Ra, Rb, Rc, Rd, Re, Rf, Rg and Rh are each independently hydrogen, aryl, heteroaryl, alkyl, cycloalkyl, heterocycloalkyl, a crosslinkable or polymerizable group bonded via a spacer;
• or
• one combination of 2R groups selected from the group consisting of
• (Ra or Rb) and (Rc or Rd),
• (Re or Rf) and (Rg or Rh), and
• (Rc or Rd) and (Re or Rf)
• may optionally form, together with the carbon or nitrogen atom, a cyclic radical which has 3 to 10 ring atoms and may be unsubstituted or substituted by one or more substituents selected from alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, a crosslinkable or polymerizable group bonded via a spacer, or a group with donor or acceptor action, and/or may be fused to one or more further cyclic radicals having 3 to 10 ring atoms, wherein the fused radicals may be unsubstituted or substituted by one or more substituents selected from alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, a crosslinkable or polymerizable group bonded via a spacer, or a group with donor or acceptor action;
• wherein the C group is bonded in the 2 and/or 4 position,
• or
• two units of the general formula (III) are bridged to one another via a bond, a linear or branched, saturated or unsaturated bridge optionally interrupted by at least one heteroatom or via O, wherein this bridge in the general formula (III) is bonded in place of Ra, Rb, Rc, Rd, Re, Rf, Rg, Rh, R13, R14 or via and/or in place of R2.