Patent ID: 9735370
Date: 2017-08-15
CPC Classifications: C07D,C09B,C09K,H01L,H05B

Claim:
1. An organic light-emitting device comprising an anode, a cathode and a light-emitting layer between the anode and the cathode wherein the light-emitting layer comprises a compound of formula (I): wherein Ar 1 , Ar 2 , Ar 3 , Ar 6 and Ar 7 in each occurrence independently represent an unsubstituted or substituted phenyl; X independently in each occurrence represents O; R independently in each occurrence represents H or a substituent; p is 0 or 1; q is 0 or 1; at least one of p and q is 1; f is 1, 2or 3; g is 1, 2or 3; and adjacent groups Ar 3 or adjacent groups Ar 2 may be linked by a divalent group to form a ring.