Organic light emitting device and compounds for use in same

A polycyclic compound represented by formula (I):

• wherein,
• R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13 and R14 are independently of each other hydrogen, an unsubstituted or substituted C6-C24aryl group, an unsubstituted or substituted C1-C30heteroaryl group, an unsubstituted or substituted C1-C25alkyl group, an unsubstituted or substituted C7-C25aralkyl group, an unsubstituted or substituted C5-C12cycloalkyl group, —NR15R16, —OR17, —SR18, —SiR19R20R21, —CN or halogen,
• wherein
• two of R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11 and R12, if present at adjacent carbon atoms, together may form an unsubstituted or substituted C6-C18aryl ring;
• L1 is a direct bond, an unsubstituted or substituted C6-C24arylene group, or an unsubstituted or substituted C1-C30heteroarylene group;
• and
• Ar1 is an unsubstituted or substituted C6-C24aryl group, or an unsubstituted or substituted C1-C30heteroaryl group;
• R15 and R16 are independently of each other H, a C6-C18aryl group which is unsubstituted or substituted by at least one C1-C18alkyl group or at least one C1-C18alkoxy group, a C1-C18alkyl group or a C1-C18alkyl group, which is interrupted by at least one O, or
• R15 and R16 together form a five or six membered aliphatic, aromatic or heteroaromatic ring;
• R17 and R18 are independently of each other H, a C6-C18aryl group which is unsubstituted or substituted by at least one C1-C18alkyl group or at least one C1-C18alkoxy group, a C1-C18alkyl group or a C1-C18alkyl group, which is interrupted by at least one O;
• R19, R20 and R21 are independently of each other a C1-C18alkyl group, a C6-C18aryl group which is unsubstituted or substituted by at least one C1-C18alkyl group.