TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Catalyst: The palladium catalyst is dichlorobis(triphenylphosphine)palladium(II).    TECHNOLOGY FOCUS - POLYMERS - Preferred Process: The method further involves synthesizing bivalent residue-containing compound (II-PA) by reacting boric acid residue-containing compound of formula: X10-Ar50-X20 (M50), and arylene group-containing compound of formula: Y10-Ar60-Y20 (M60) in presence of palladium catalyst and base, and adding boric acid residue-containing compound (I) and arylene group-containing compound (II) and reacting in presence of palladium catalyst and base.Ar50,Ar60=same as Ar1;X10,X20=same as X1;andY10,Y20=same as Y1. Preferred Definitions:    Y1-Y4=halo;    Ar1 or Ar3=arylene optionally substituted by group of formula (A40), preferably group of formula (A40a-A40d), bivalent heterocyclic optionally substituted by group of formula (H70), preferably group of formula (H70e or H80a), or optionally substituted bivalent aromatic amine;    ring A,ring B'=optionally substituted aromatic-hydrocarbyl ring;    Rw,Rx=H, alkyl, alkoxy, alkylthio, alkylsilyl, alkylamino, aryl, aryloxy, arylalkyl, arylalkoxy, arylalkenyl, arylalkynyl, arylamino, monovalent heterocyclic, acyl, substituted carboxyl, or cyano, and Rw and Rx may combine with each other to form ring;    Rg,Ra-Rd=H, alkyl or aryl;    ring C',ring D=aromatic ring optionally substituted by alkyl, alkoxy, alkylthio, alkylsilyl, alkylamino, aryl, aryloxy, arylalkyl, arylalkoxy, arylalkenyl, arylalkynyl, arylamino, monovalent heterocyclic, acyl, acyloxy, substituted carboxyl, or cyano;    E,Y'=O or S;    Rj,Rk=H, alkyl, alkoxy, or aryl;    m',n'=1 or 2;and    A1,A2=alkyl, or aryl, and A1 or A2 is H.    EXAMPLE - 4,4'-Dibromo-1,1'-biphenyl-containing monomer (in g) (0.603) of formula (A), 4,4'-bis-boranyl-biphenyl-containing monomer (0.692) of formula (B), Aliquat336 (RTM: methyltrioctyl ammonium chloride) (0.17), dichlorobis(triphenylphosphine)palladium(II) (1.8 mg), toluene (20 ml) and 16.7 weight% sodium carbonate aqueous solution (800) were added, heated and refluxed for 3 hours under argon gas atmosphere. The resulting solution was cooled to room temperature, and N,N'-bis-(4-bromo-phenyl)-N,N'-di-p-tolyl-anthracene-9,10-diamine (0.350), (cis-1,2-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)styrene) (0.180), and solution which dissolved Aliquat336 (RTM: methyltrioctyl ammonium chloride) (0.09) and dichlorobis(tiphenylphosphine)palladium(II) (1.1 mg) in deaerated toluene (9 ml) were added to the resulting solution. Then, deaerated 16.7 weight% sodium carbonate aqueous solution (8 ml) was dripped to the resulting solution, heated and refluxed for 3 hours under argon gas atmosphere. The reaction solution was cooled to 60 degrees C, and phenyl boric-acid (0.17)/tetrahydrofuran (1 ml) mixed solution was added, heated and refluxed for 4.5 hours. Further, toluene was added to the reaction solution, and liquid-separated. Subsequently, the toluene solution was filtered, and the insoluble material was removed. The toluene solution was poured to methanol, precipitated, dried and dissolved in toluene. The toluene solution was concentrated, precipitated using methanol, washed and dried, to obtain a high molecular compound (0.54) having weight average molecular weight of 7.4x 104 and number average molecular weight of 2.1x 104 based on polystyrene conversion.