NOVELTY - Triarylamine compounds are new.    USE - In electroactive composition, and in active layer of organic electronic device (claimed) where the electronic device is organic light-emitting diodes for making displays, and diode laser; photodetectors including photoconductive cells, photoresistors, photoswitches, phototransistors, phototubes, infrared (IR) detectors, or biosensors; photovoltaic cell or device, solar cell, and transistor or diode.    ADVANTAGE - The triarylamine compounds have particular utility in organic light-emitting diodes (OLEDs). In OLEDs, light-emitting material is frequently organometallic compound containing heavy atom such as Ir, Pt, Os, or Rh. The lowest excited state of these organometallic compounds often possesses mixed singlet and triplet character. Because of triplet character, excited state can transfer its energy to triplet state of nearby molecule, which may be in the same or adjacent layer. This results in luminescence quenching. To prevent such luminescence quenching in OLED device, triplet state energy of material used in various layers of OLED device has to be comparable or higher than lowest excited state energy of organometallic emitter; and there is continuing need to further increase triplet energy of materials to be used for green, blue-green, and blue emitters with triplet character. The triarylamine compounds (Ia), (Ib) and (Ic) have increased triplet energy due to twisting of the aryl-N groups out of plane. Thus the triarylamine compounds are particularly useful in devices with organometallic emitters. The triarylamine compounds are present as the hole transport material in hole transport layer, and/or as host material in electroactive layer. The triarylamine compounds can be used as host for dopants with any color of emission (preferably the triarylamine compounds are used as hosts for electroluminescent materials having emission color ranging from green to blue). The triarylamine compounds, when used in OLED device, result in greater external quantum efficiency and current efficiency, than conventional compounds.    DETAILED DESCRIPTION - Triarylamine compounds of formulae (Ia), (Ib) and (Ic), are new.    R1, R2 and R3=alkyl;or    greater than or equal to 2 alkyls of R1, R2 and R3 joined together=cyclic or multicyclic group;    R4, R5 and R6=alkyl, or aryl (preferably aryl group of formula (i));or    R5+R6=cyclic group;    Ar1 and Ar2=aryl;or    Ar1+Ar2=carbazole;    R15=H, D, or alkyl;or    adjacent R15+R15=aromatic ring;    m=0-5;    R7 and R8=alkyl;    R9=H, D, or alkyl;or    greater than or equal to 2 of R7, R8 and R9 joined together=cyclic or multicyclic group;    R10 and R11=alkyl;    R12=H, D, or alkyl;or    greater than or equal to 2 of R10, R11 and R12 joined together=cyclic or multicyclic group;    R13 and R14=alkyl, or aryl or arylamino (preferably the aryl is a group of formula (i));or    R13+R14=cyclic group.    INDEPENDENT CLAIMS are included for the following:    (1) an electroactive composition (C1) comprising: the triarylamine compound of formula (Ia), (Ib) or (Ic) as host; and an organometallic dopant capable of electroluminescent having an emission maximum of 380-750 nm; and    (2) an organic electronic device comprising: a first electrical contact layer, a second electrical contact layer, and at least one active layer between the first and second layers, where the active layer comprises the triarylamine compound of formula (Ia), (Ib) or (Ic).