TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (claimed): Compound (I) is prepared by dissolving sulfur and nitrogen-containing 2,7-dibromo-9,10-dihydrophenanthrene derivative of formula (II) and boron and oxygen-containing 4,4'-diisopropylbiphenyl derivative of formula (III) in organic solvent, adding alkali solution and catalyst, reacting at 50-120 degrees C for 6-108 hours, extracting with deionized water and toluene, adding anhydrous ethanol, distilling under reduced pressure, precipitating, filtering, drying solid part obtain powder, dissolving powder with chloroform, mixing ethyl acetate and n-hexane or toluene, performing silica gel column chromatography and vacuum distillation liquid chromatography with methanol, filtering, extracting resulting solid with acetone using Soxhlet extractor for 3 days, adding methanol, and filtering. Compound (II) is prepared by taking 4-nitro-o-phenylenediamine as raw material, adding thionyl chloride and pyridine, reacting at 80-90 degrees C for 24 hours, adding benzothiadiazole, liquid bromine and hydrobromic acid, performing bromination reaction, adding copper as catalyst, reacting at 127 degrees C for 4 hours, adding tin chloride at molar ratio of 1:10, reacting at 100 degrees C for 10 hours, adding hydrochloric acid at molar ratio of 0.054:1, performing diazotization for 11-12 hours, adding dimethylformamide and solvent, reacting under anaerobic conditions, adding potassium iodide and substituted 2-butyne derivative of formula (IV), and reacting for 12 hours. Compound (III) is prepared by mixing bromine-containing biphenyl derivative of formula (V) and tetrahydrofuran under inert gas atmosphere, cooling to 78 degrees C, adding n-butyllithium as reagent, reacting at 78 degrees C for 2 hours, and stirring at room temperature. The molar ratio of compound (II) and compound (III) is 1-1.5:1-1.5. The molar ratio of 4-nitro-o-phenylenediamine and thionyl chloride is 1.5:1. The volume ratio of thionyl chloride and pyridine is 50:1. The molar ratio of 4-nitro-o-phenylenediamine and thionyl chloride is 1.5:1. The volume ratio of thionyl chloride and pyridine is 50:1. The molar ratio of benzothiadiazole with hydrobromic acid is 4:1. The volume ratio of benzothiadiazole and liquid bromine is 5.3:1. The molar ratio of compound (V) and n-butyllithium is 1:2. The molar amount of compound (II) is 0.59-10%. Preferred Components: The catalyst is tris(dibenzylideneacetone)dipalladium, bis(triphenylphosphine)palladium dichloride or tetrakis(triphenylphosphine)palladium.