A high molecular weight aromatic PhOLED matrix polymer obtained by metal-free, superacid-catalyzed polyhydroxyalkylation was investigated. All organic layers were prepared by spin-coating onto patterned, precleaned, and ozone-treated indium tin oxide (ITO)-coated glass substrates. A hole injecting PEDOT: PSS layer was spin-coated onto the substrates under clean-room conditions yielding layers of 36 nm, which were baked at 110°C for 2 min to remove residual water. The cross-linkable hole conductor HTL1 was dissolved in toluene, 2wt% of the photoinitiator 4-octyloxydiphenyliodonium hexafluoroantimonate (OPPI) was added, and finally the solution was spincast on top of the PEDOT:PSS layer. The superacid-catalyzed Friedel-Crafts type polycondensation of 1,4-bis(9,9-dimethylfluoren-2-yl)-2,3,5,6-tetrafluorobenzene as bifunctional, nonactivated aromatic monomer and N-methylisatin as bifunctional keto electrophile allows for the generation of high molecular weight aromatic polymers with conjugated blocks of defined length within the main chain.