TECHNOLOGY FOCUS - POLYMERS - Preparation (claimed): O-phenylenediamine and 2-picolinic acid in the molar ratio of 1:1 are added to reactor, polyphosphoric acid is added as solvent, stirred under nitrogen atmosphere, placed in oil bath, heated to 160-180 degrees C for 4-6 hours, added to ice-water bath, pH is adjusted to 6-8 using sodium hydroxide, precipitate is filtered, re-crystallized and dried, to obtain 2-(2'-pyridyl)benzimidazole. 2,5-Dibromo-3-methyl-thiophene, 2-(2'-pyridyl)benzimidazole, copper iodide, potassium carbonate and 1,10-phenanthroline are dissolved in the molar ratio of 1:1:0.25:4:0.4 in dimethylformamide, added to reactor with magnetic stirring under nitrogen atmosphere, heated in oil bath, refluxed for 24-26 hours and cooled to room temperature, to obtain brown solution. The obtained brown solution is extracted with chloroform, dried using anhydrous magnesium sulfate, eluted with tetrahydrofuran and hexane in the molar ratio of 1:1 and purified using column chromatography, to obtain 2-bromo-5-((2'-pyridyl) benzimidazole)-3-methyl-thiophene. The obtained product is dissolved in methanol, heated to reflux, 0.5 equivalent sub-group metal salt is added, refluxed for 12-14 hours, reaction is terminated, filtered, washed with methanol and ethanol and dried, to obtain metal complex. 37% formaldehyde solution and 2,5-dioctyloxy-1,4-bis(triphenylphosphine bromomethyl) are added to 60-100 ml dichloromethane, 20-40 %mass sodium hydroxide solution is added dropwise, reacted at room temperature for 24-26 hours, extracted using dichloromethane, washed with water, dried using magnesium sulfate, filtered, recrystallized and dried, to obtain 1,4-divinyl-2,5-di-octyloxyanthracene. 3,6-Diacetyl-N-octyl-carbazole and bromo-methane phosphorus ylide salt in the molar ratio of 1:2 are dissolved in anhydrous tetrahydrofuran, sodium hydride is added, heated to reflux under protection of nitrogen for 8-9 hours, cooled to room temperature, methanol is added, distilled water is added, extracted with dichloromethane, dried using anhydrous magnesium sulfate, concentrated and purified using column chromatography using cyclohexane and ethyl acetate in the molar ratio of 1:10 as eluent, to obtain 3,6-divinyl-N-octyl-carbazole. 1,4-divinyl-2,5-di-octyloxyanthracene and 3,6-divinyl-N-octyl-carbazole and metal complex in the molar ratio of 1:1 are added to reactor, tris(2-methylphenyl)phosphine and palladium acetate are added, reacted at 90 degrees C for 24-26 hours under nitrogen atmosphere, cooled to room temperature, reaction is terminated, filtered, obtained precipitate is washed with methanol, obtained crude product is dissolved in tetrahydrofuran, filtered and dried, to obtain polymeric metal complex dye.