| abstract |
The present invention relates to a compound derivative used in an organic light emitting diode (OLED) and to an organic light emitting diode using the same, in particular, a pentaphenylbenzene derivative or a triphenylene derivative of Chemical Formulas 1 to 3 having a high glass transition temperature is prepared and organic It is used as a hole transporting material of light emitting diodes to provide excellent thermal stability and device lifetime, and to provide an organic light emitting diode having excellent light emission brightness and light emission efficiency.n n n [Formula 1] [Formula 2] [Formula 3]n n n n n n n n n n (In the formula 1 to 3, R1 to R6 is an aryl group having 6 to 40 nuclear carbon atoms substituted or unsubstituted, R1 and R2, R3 and R4 or R5 and R6 are a single bond, methylene group, ethylene Can be connected by groups or vinyl groups.) |