TECHNOLOGY FOCUS - POLYMERS - Preparation (Claimed): Preparation of (I) comprises conducting a coupling polymerization using a 1,2,2-triphenylvinylbenzene dihalide monomer of formula (II) and a dihalide oligomer of formula (X-Ar1-(Y1-Ar2-Y1-Ar1)m-X) (III) in the presence of a catalyst.X = element comprising halo; andRa1, Rd = H (preferred) or -SO3R1a.Preferred Components: The polyarylene-based polymer has an average molecular weight of 10000-1000000. The dihalide oligomer is coupling-polymerized in an amount of 0.01-1 equivalent weight. The polymer electrolyte membrane further comprises: at least one polymer comprising polyimide, polyether ketone, polysulfone, polyether sulfone, polyether ether sulfone, polybenzimidazole, polyphenylene oxide, polyphenylene sulfide, polystyrene, polytrifluorostyrene sulfonic acid, polystyrene sulfonic acid, polyurethane, or branched sulfonated polysulfone ketone copolymer; and at least one inorganic substance comprising silicon dioxide, titanium dioxide, inorganic phosphate, sulfonated silicon dioxide, sulfonated zirconium oxide, or sulfonated zirconium phosphate. Preferred Method: The method further comprises: sulfonating the polymer obtained by the coupling polymerization to introduce at least one -SO3R1a group into the polymer; sulfonating the dihalide monomer to introduce at least one -SO3R1a group into the dihalide monomer; eliminating R1a from the dihalide monomer to introduce at least one -SO3H group into the dihalide monomer prior to the coupling polymerization; and eliminating R1a from the polymerized polymer to introduce at least one -SO3H group into the polymer after the coupling polymerization. The coupling polymerization is conducted in the presence of at least one solvent comprising dimethylacetamide, n-methylpyrrolidone, dimethylformamide, dimethyl sulfoxide, methylene chloride, chloroform, tetrahydrofuran, benzene, toluene, and xylene. The sulfonation of the polymer obtained by the coupling polymerization is conducted in the presence of at least one sulfonic acid compound comprising concentrated sulfuric acid, chlorosulfonic acid, fuming sulfuric acid, and fuming sulfuric acid triethylphosphate. The removal of R1a to introduce at least one -SO3H group is conducted in the presence of at least one compound comprising lithium bromide, pyridine hydrochloride, and sodium nitrite. EXAMPLE - Anhydrous nickel chloride (3.6 g) and bipyridine (5.4 g) were added into a first flask. Dihalide monomer (4.3 g), dihalide oligomer (10 g), and zinc (2.7 g) were added into a second flask to form a solution. The solution in the second flask was dried under vacuum for 2 hours, and n-methylpyrrolidone (140 ml) was added to the solution. The reactant solution was heated to 80 degrees C and stirred for 3 hours. Then, the solution of the first flask was added into the second flask, and the resultant solution was stirred for 4 hours. The reactant solution was filtered and water was added to form a precipitate. The precipitate was washed with nitric acid solution and hydrochloric acid solution several times, and dried in an oven at 120 degrees C for 24 hours to obtain a polyarylene-based polymer.