TECHNOLOGY FOCUS - POLYMERS - Preparation: The polymer is prepared by mono-brominating a triaryl amine monomer of formula (I), and replacing the bromide in the resulting compound with a vinyl group, e.g. by a palladium catalyzed vinylation.Preferred Components: The aryl is (bi)phenyl, (phen)anthracenyl, naphthyl, fluorenyl, or pyrenyl. The aryl ring has a substituent of OR1, chlorine, bromine, iodine, fluorine, NR1R2, C(O)OR1, C(O)NR1R2, NR1C(O)R2, NO3, N=C=O, C=N=O, NR1C(O)NR2R3, SR1, C(O)R1, OC(O)R1, R1, R2, or R3. Preferably, the triaryl amine monomers are or formulae (Ia)-(Ic). The covalently bound linker and the cyclic olefin together are of formula (II). The linker is 1-20C alkyl, 2-20C alkenyl, 5-8C cycloalkyl, or aryl, and the cyclic olefin is norbornene, norbornadiene, cyclopentene, dicyclopentadiene, cyclobutene, cycloheptene, cyclooctene, 7-oxanorbornene, 7-oxanorbornadiene, or cyclo dodecene. The triaryl amine, the linker or the cyclic olefin is substituted with halide, 1-20C alkyl, 2-20C alkenyl, 2-20C alkynyl, 1-20C alkoxy, and/or aryl, and further includes hydroxyl, thiol, thioether, ketone, aldehyde, ester, ether, amine, imine, amide, nitro, carboxylic acid, carbonate, isocyanate, carbodiimide, carboalkoxy, carbamate, and/or halogen.R1-R3 = 1-20C alkyl, 2-20C alkenyl, 2-20C alkynyl, or aryl;R4 = cyclic olefin, preferably of formulae (IIa)-(IIc);R5 = CH2, C-(di)alkyl, O, N-alkyl, or NH;x, y = 0 or 1; andw, z = 0 or any positive integer, preferably z = 0-18, preferably less than 5. Preferred Definitions:    Ar1-Ar3 = optionally substituted phenyl;    EXAMPLE - Tris(dibenzylideneacetone)dipalladium (618 mg), 1,1'-bis(diphenylphosphino)ferrocene (561 mg) and 3-bromo toluene (7.7 g) were dissolved in dry toluene (400 ml) and stirred for 15 minutes. Sodium tert-butoxide (5.2 g) and p-methoxyaniline (5.5 g) were then added. After the reaction mixture was warmed to 100degreesC for 3 hours, 4,4'-di bromo biphenyl (42 g) and sodium tert-butoxide (5.2 g) were added. The reaction mixture was heated to 100degreesC for 16 hours, and was partitioned between water and ether. The combined organic fractions were dried over magnesium sulfate, and the solvent was evaporated under reduced pressure. Column chromatography afforded 19.3 g (84%) of 4-bromo-4'-(m-tolyl-p-methoxy phenylamino)biphenyl.