TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The starting material is substituted (hetero)aromatic structures, preferably phenyl, biphenyl, fluorene, stilbene, alpha -phenylcinnamonitrile, 3-amino-2,3-diphenyl-acrylonitrile, alpha , beta -diphenylfumaronitrile, thienyl, naphthyl, triazine, triazole, oxadiazole, pyridine or quinoline. The starting material is substituted and the polymer consists of poly(arylene-vinylene), in which the aryl structures are phenyl, biphenyl, fluorene, stilbene, alpha -phenylcinnamonitrile, 3-amino-2,3-diphenyl-acrylonitrile, alpha , beta -diphenylfumaronitrile, thienyl, naphthyl, triazine, triazole, oxadiazole, pyridine or quinoline, where the substituent comprises: a group of hydrogen, methyl, alkyl, alkoxy, aryl or aryloxy; acceptors such as cyano, -thiocyano, ammonium group of formula (-N+(R9)3) (e.g. halide, dicyanamide, cyanide or bis(trifluoromethylsulfonyl)amide); and donors such as an amino group of formula (-N(R9)n), (-OR10) or (-R10).R9 = H, methyl, ethyl, n-propyl, isopropyl, 1-butyl, 2-butyl or tert-butyl;R10 = linear or branched alkyl ( preferably methyl, ethyl, n-propyl, iso-propyl, n-butyl, iso-butyl, sec-butyl, tert-butyl, n-pentyl, iso-pentyl, sec-pentyl, neo-pentyl, 1,2-dimethylpropyl, iso-amyl, n-hexyl, iso-hexyl, sec-hexyl, n-heptyl, iso-heptyl, n-octyl, n-decyl, 1-nonyl or 1-decyl), aryl (e.g. phenyl, biphenyl, fluorene, pyrene, tolyl, mesityl, cyclopentadienyl, naphthalene or anthracene), and/or heteroaryl (e.g. pyridyl, thiophene, pyrazole, imidazole, carbazole, oxadiazole or furyl); andn = 1-2.    TECHNOLOGY FOCUS - POLYMERS - Preferred Process: The method comprises, on a support, applying a reactant or monomer, photochemically initiating the polymerization and removing the residual reactant or monomer. The reactant or monomer is applied and dissolved at a temperature of -30 degrees C to -200 degrees C, preferably -90 degrees C to -120 degrees C. The layer thickness is adjusted with or after the application of the reactant or monomer. EXAMPLE - No suitable example given.