TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Process: The process comprises: reacting a first dihaloaryl moiety with the diboron ester to form the first mixture and reacting the first mixture with a second dihaloaryl moiety; or forming an aryl diboronic ester by reacting a first dibromoaryl moiety with diboron ester in the presence of palladium and reacting the aryl diboronic ester in situ with a second dibromoaryl moiety. Preferred Components: The second dibromoaryl moiety is different from the first dibromoaryl moiety; or both the dibromoaryl moieties are same. The phase transfer agent is tetra-alkyl ammonium hydroxide or tetra-alkyl ammonium chloride. The diboron ester is bis(catecholato)diboron or 4,4,5,5,4',4',5',5'-octamethyl-(2,2')bi((1,3,2)dioxaborolanyl). In the method, at least one of the dibromoaryl moieties is dibromofluorene. The dibromofluorene has a structure of formula (I). The dibromofluorene is 2,7-dibromo-9,9-bis-(2-ethyl-hexyl)-9H-fluorene (preferred), 2,7-dibromo-9,9-dioctyl-9H-fluorene, 2,7-dibromo-9,9-bis(2-(2-(2-methoxyethoxy)ethoxy)ethyl)-fluorene, 2,7-dibromo-9,9-bis-(6-bromohexyl)fluorene, 2,7-dibromo-9,9-bis(6-(N,N-dimethylamino)hexyl)fluorene, 2,7-dibromo-9,9-bis(4-cyanobiphenyl-4'-oxyhexyl)fluorene, 2,7-dibromo-9,9-bis(4-sulfonylbutoxyphenyl)fluorene or 2,7-dibromo-9,9-bis(4-hydroxyphenyl)fluorene.Either R1, R2 = H, (hetero)alkyl, alkenyl, alkynyl, alkoxy, (hetero)aryl, -CN, -OR3, -CO2R3, -SR3, -N(R3)2, -P(R3)2, -SOR3, -SO2R3 or -NO2 (where at least one of R1 or R2 is partially unsaturated, preferably fluorinated (oxy)alkyl, fluorinated (oxy)alkenyl, fluorinated oxyalkynyl or partially unsaturated heteroalkyl); orR1+R2 = 5- or 6-membered (hetero)cycloalkyl or (hetero)aryl ring; andR3 = alkyl or aryl.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The aryl polymer comprises a random, block, alternating or graft copolymer comprising units of aryl groups derived from the first dibromoaryl moiety and the second dibromoaryl moiety. The aryl polymer is polyfluorene. EXAMPLE - None given.