Heterocyclic compound and an organic electroluminescence device comprising the heterocyclic compound

A heterocyclic compound of formula (I)

• wherein R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16, R17, and R18 are independently H, deuterium, a C6 to C60 aryl group;
• a C5 to C60 heteroaryl group, a C1 to C20 alkyl group, a C1 to C20 alkylhalide group, a C3 to C20 cycloalkyl group, CN, N(R22)2, OR20, SR20, B(R21)2, SiR24R25R26, or halogen, the aryl, heteroaryl, alkyl, alkyl halide, and cycloalkyl group being optionally substituted
• wherein R5 and R6 optionally form a ring structure which is optionally substituted,
• wherein at least two adjacent residues, R1, R2, R3, R4, and/or R5, and/or at least two adjacent residues, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16, R17, and/or R18, together form an optionally substituted ring structure,
• wherein R1 and R18 do not form together a ring structure,
• wherein (i) R9 and R10 and/or (ii) R14 and R15 are joined together to form a ring,
• wherein R20, R21, and R22 are independently a C6 to C60 aryl group, a C5 to C60 heteroaryl group, a C1 to C20 alkyl group, or a C3 to C20 cycloalkyl group, which are optionally substituted,
• and/or
• two residues R22 and/or two residues R21 together form an optionally substituted ring structure,
• and/or
• R20, R21, and/or R22 together with an adjacent residue R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16, R17, and/or R18 forms an optionally substituted ring structure, and
• wherein R24, R25 and R26 are independently a C6 to C60 aryl group, a C5 to C60 heteroaryl group linked via a carbon atom to Si, a C1 to C20 alkyl group, or a C3 to C20 cycloalkyl group, which are optionally substituted,
• and/or
• two residues R24 and R25 together form an optionally substituted ring structure.