NOVELTY - A high molecular compound having aromatic structural unit (I) or (II), is new.    USE - New high molecular compound is used for electronic device e.g. electroluminescence element (all claimed) for organic thin-film solar cell and organic image sensor. Can also be used for support substrate, packing material, and sealing material.    ADVANTAGE - The electronic device using the high molecular compound has high intensity and light-emitting property.    DETAILED DESCRIPTION - A high molecular compound having aromatic structural unit (I) or (II), is new.    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;    m2=1-3;    R3=single bond or optionally substituted organic group having valence of 1+m3;    Y1=-CO2-, -SO3-, -SO2-, -PO32- or -B(Ra)3-;    R4=single bond or optionally substituted organic group having valence of 1+m4;    Y2=carbocation, ammonium cation, phosphonium cation, sulfonium cation, or iodonium cation;    M1,Z2=metal cation or optionally substituted ammonium cation;    Z1,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-;    R5=optionally substituted organic group having valence of 1+m5 or single bond;    Q1-Q3=divalent organic group;    Y3=-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", -NHC(=O)-(R'NHC(=O))a4-R" or group of formula (i);    R'=optionally substituted bivalent hydrocarbyl;    R"=H, optionally substituted monovalent hydrocarbyl, carboxy, sulfo, hydroxy, mercapto, -NRc2, cyano or -C(=O)NRc2;    R"'=optionally substituted trivalent hydrocarbyl;    n1-n3,b1,b2,a4=0 or more;    Ra-Rc=6-50C aryl or 1-30C alkyl (both optionally substituted);    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;    m7=0-3;    R8=optionally substituted organic group having valence of 1+m8+m9;    R9=optionally substituted organic group having valence of (1+m10+m11);and    a1-a3,m1,m3,m5,m8-m11=1 or more.    (i) Hydrogen in aromatic structural unit (I) or (II) is optionally substituted with substituents other than R1 and R2; (ii) When R3 is single bond, then m3 is 1; (iii) When R4 is single bond, then m4 is 1; and (iv) When R5 is single bond, then m5 is 1. INDEPENDENT CLAIMS are included for the following:    (1) electronic device, which has a layer containing high molecular compound having aromatic structural unit (I) or (II), as electric charge injection layer and/or electric charge transport layer;    (2) organic compound of formula (III);    (3) manufacture of high molecular compound having aromatic structural unit (I);    (4) high molecular compound having structural unit of formula (VI);    (5) organic compound of formula (VII);    (6) manufacture of high molecular compound having structural unit (II); and    (7) high molecular compound having structural unit of formula (X).    R11=R1, -R13-((Q4)n4-Y4)m15, or -R14-((Q5)n5-Y5)m16;    R11"=-R13-((Q4)n4-Y4)m15 or -R14-((Q5)n5-Y5)m16;    R12=R2;    m14=1-3;    X1-X4=group used in condensation polymerization;    R13=single bond or optionally substituted organic group having valence of 1+m15;    Q4,Q5=Q1;    Y4=-CO2Rd, -SO3Rd, -SO2Rd, -PO3(Rd)2 or -B(Rd)2;    n4=0 or more;    Y5=haloalkyl, halo, -N(Re)2, -P(Re)2 or -SRe;    R14=single bond or optionally substituted organic group having valence of 1+m16;    Rd,Re=6-50C aryl or 1-30C alkyl (both optionally substituted);    n5=0 or more;    m15,m16=1 or more;    m18=0-3;    R15=R6;    R16=R2;    R15"=-R16'(-((Q3)n3-Y3)m20)-((Q4)n4-Y4)m19 or -R17(-((Q3)n3-Y3)m22)-((Q5)n5-Y3)m22;    R16'=optionally substituted organic group having valence of (1+m19+m20);    R17=optionally substituted organic group having valence of (1+m21+m22);and    m19-m22=1 or more.    (i) Hydrogen in organic compound (II) is optionally substituted by substituents other than R11 and R12; (ii) Hydrogen in organic compound (VII) is optionally substituted by substituents other than R15 and R16. (ii) When R13 is single bond, then m15 is 1.