TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (claimed): An organic compound of formula: X1-Ar3(-(R10')m12)(-(R11')m13)-X2 is polymerized to 6produced polymeric compound having structural unit (I).R10'=R1;Ar3=optionally substituted condensed polycyclic aromatic group having valence of (2+m12+m13);R11=R2;andm12,m13=m1.Preferred Layer: The layer containing high molecular compound is electron injection layer and/or electron carrying layer. Full Definitions:    Ar1=optionally substituted condensed polycyclic aromatic group;    R1=(-R3-((Q1)n1-Y1(M1)a1(Z1)b1)m3) or (-R4-((Q2)n2-Y2(M2)a2(Z2)b2)m4);    R2=(-R5-((Q3)n3-Y3)m5);    m1,m2=1 or more;    R3=optionally substituted organic group having valence of (1+m3);    Q1-Q3=divalent organic group;    Y1=-CO2-, -SO3-, -SO2-, -PO32- or -B(Rz)3-;    M1=optionally substituted ammonium cation;    Z1=F-, Cl-, Br-, I-, OH-, B(Ra)4-, RaSO3-, RaCOO-, ClO-, ClO2-, ClO3-, ClO4-, SCN-, CN-, NO3-, SO42-, HSO4-, PO43-, HPO42-, H2PO4-, BF4- or PF6-;    n1-n3,b1,b2,a4=0 or more;    a1-a3,m3-m5=1 or more;    Rz,Ra,Rb,Rc=optionally substituted 6-50C aryl or optionally substituted 1-30C alkyl;    R4=single bond or optionally substituted organic group having valence or (1+m4);    Y2=carbocation, ammonium cation, phosphonium cation, sulfonium cation or iodonium cation;    M2=F-, Cl-, Br-, I-, OH-, B(Rb)4-, RbSO3-, RbCOO-, ClO-, ClO2-, ClO3-, ClO4-, SCN-, CN-, NO3-, SO42-, HSO4-, PO43-, HPO42-, H2PO4-, BF4- or PF6-;    Z2=optionally substituted ammonium cation or metal cation;    R5=singe bond or organic group having valence of (1+m5);    Y3=group of formula (vi) or groups of formulae: -O-(R'O)a3-R", -S-(R'S)a4-R", -C(=O)-(R'-C(=O))a4-R", -C(=S)-(R'-C(=S))a4-R", -N((R')a4R")2, -C(=O)O-(R'-C(=O)O)a4-R", -C(=O)O-(R'O)a4-R" and -NHC(=O)-(R'NHC(=O))a4-R";    R'=optionally substituted bivalent hydrocarbyl;    R"=H, carboxy, optionally substituted monovalent hydrocarbyl, sulfo, hydroxy, mercapto, -NRc2, cyano, -C(=O)NRc2;    R"'=optionally substituted trivalent hydrocarbyl;    Ar2=optionally substituted condensed polycyclic aromatic group having valence of (2+m6+m7);    R6=(-R8(((Q3)n3-Y3)m9)(((Q1)n1-Y1(M1)a1(Z1)b1)m8)) or (-R9(((Q3)n3-Y3)m11)(((Q2)n2-Y2(M2)a2(Z2)b2)m10));    R7=R2;    m6=1 or more;    m7=0 or more;    R8=optionally substituted organic group having valence of (1+m8+m9);    m8,m9=1 or more;    R9=optionally substituted organic group having valence of (1+m10+m11);and    m10,m11=1 or more.    (i) When R3 is single bond, m3 is 1; (ii) When R4 is single bond, m4 is 1; and (iii) When R5 is single bond, m5 is 1. Preferred Definitions:    Ar1,Ar2=naphthalene, anthracene, phenanthrene, 3a,10b-dihydro-pyrene, perylene, or 12b,12c-dihydro-coronene.    EXAMPLE - 1-(5-(9-(3,4-Bis((2-(2-(2-methoxyethoxy)ethoxy)ethoxy))phenyl)-2,7-dibromo-dodecahydro-1H-fluoren-9-yl)-2-(2-(2-(2-methoxyethoxy)ethoxy)ethoxy)phenyl)-1,4,7,10-tetraoxaundecane (in g) (0.53), ethyl 5-(5-(3-(ethoxycarbonyl)-4-(2-(2-(2-methoxyethoxy)ethoxy)ethoxy)phenyl)-3,7-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)naphthalen-1-yl)-2-(2-(2-(2-methoxyethoxy)ethoxy)ethoxy)benzoate (0.43), dichlorobis (triphenylphosphine) palladium (0.3 mg), methyltrioctyl ammonium-chloride (5 mg), toluene (12 mL) and sodium carbonate aqueous solution (1 mL) were mixed and stirred at 105 degrees C for 9 hours. Pphenylboronic acid (23 mg) was added and stirred at 105 degrees C for 14 hours. Sodium-diethyldithiocarbamate trihydrate (0.4) and water (8 mL) were added to the obtained reaction mixture, and stirred at 80 degrees C for 2 hours. The obtained mixture was dripped into methanol, filtered and dried. The resulting mixture was purified to produce polymeric compound (0.56) having number average molecular weight of 3.4x 104.