Patent ID: 6657224
Filing Date: 2003-12-02
Classification: C07D,H01L

Abstract:
An organic light emitting diode device comprising:(a) a cathode; (b) an anode; and (c) at least two organic layers between said anode and said cathode, wherein said at least two organic layers comprise a first organic layer formed from at least one electron-injection/electron-transport material and a second organic layer formed from at least one hole-injection/hole-transport material, wherein said electron-injection/electron-transport material is adjacent to said cathode and said hole-injection/hole-transport material is adjacent to said anode, said at least one hole-injection/hole-transport material comprising a compound of formula 1:wherein R1 is selected from the group consisting of biphenyl, naphthyl, phenyl and Q is selected from the group consisting of a bond, C1-C4 alkyl, â€”C(O)â€”, â€”S(O)â€”, â€”Oâ€”Siâ€”Oâ€”, â€”Oâ€”Geâ€”Oâ€”, â€”Oâ€”, â€ƒand R2 and R3 are each independently selected from the group consisting of aryl, F, Cl, â€”CF3, saturated alkyl of up to 10 carbon atoms, SO2R6, Si(R6)3, and OR6, or R2 and R3 taken together form a heterocyclic ring of up to 8 atoms, wherein one of the 8 atoms is nitrogen and another of the 8 atoms is either nitrogen or oxygen, or R2 and R3 taken together with the phenyl group to which they are attached form a fused polycyclic aromatic system, wherein said fused polycyclic aromatic system comprises up to 16 carbon atoms; R4 and R5 are each independently selected from the group consisting of: or R4 and R5 taken together with the nitrogen to which they are attached are selected from the group consisting of: R6 is C1-C4 straight or branched saturated alkyl; R7 and R8 are each independently selected from the group consisting of â€”OR9, C1-C4 alkyl, aryl, â€”SCH3, â€”CF3, â€”Cl, â€”Br, â€”NO2, and â€”COOR9; R9 is selected from the group consisting of C1-C6 alkyl and aryl.