NOVELTY - Substituted triazine compounds are new.    USE - As phosphorescent or fluorescent host material or fluorescent blue dopant material for organic photoelectric device e.g. organic light emitting device, organic solar cell, organic transistor, organic photo-conductor drum, or organic memory device (claimed).    ADVANTAGE - The compound (I) or (II) has appropriate energy level depending upon the substituents. Thus, enhancing the electron transporting properties and hole inhibition properties of the device and provides excellent efficiency and driving voltage. The compounds improve electrochemical and thermal stabilities of the device, and enhance life span characteristics during driving the organic photoelectric device. The compounds exhibit high thermal stability or oxidation resistance. The devices exhibit excellent life span characteristics due to molecular stability, even though they have a low glass transition temperature (Tg). The compound improves the life span characteristic, efficiency characteristic, electrochemical stability, and thermal stability of an organic photoelectric device, and decreases driving voltage. The compound improves quantum efficiency of solar cell.    DETAILED DESCRIPTION - Substituted triazine compounds of formula (I) and (II) are new.    Ar1=optionally substituted 10-30C fused aryl;    Ar2=quinolinyl or isoquinolinyl (both optionally substituted);    L1=6-20C arylene (optionally substituted);    n and m=1 or 2;or    m+n=3;    Ar3=6-30C aryl (optionally substituted);    Ar4=quinolinyl (optionally substituted);    L2=L1;and    a and b=1 or 2;or    a+b=3.    An INDEPENDENT CLAIM is included for an organic photoelectric device (500) comprising an anode (120), a cathode (110), and at least one organic thin layer (105) between the anode and cathode, where at least one organic thin layer includes the compound (I) or (II).    DESCRIPTION OF DRAWING(S) - The figure shows a cross-sectional view of the organic light emitting diode.    Organic thin layer (105)    Cathode (110)    Anode (120)    Emission layer (130)    Hole transport layer (140)    Organic photoelectric device (500)