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 of formula (I) or (II), is new.    R1=-R3-((Q1)n1-Y1(M1)a1(Z1)b1)m2 or -R4-((Q2)n2-Y2(M2)a2(Z2)b2)m3;    R2=-R5-((Q3)n3-Y3)m4;    R3=single bond or optionally substituted organic group having valence of 1+m2;    Q1-Q3=divalent organic group;    Y1=-CO2-, -SO3-, -SO2-, -PO32- or -B(Ra)3-;    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-;    n1-n3,b1,b2,a4,m5=0 or more;    a1-a3,m1-m4,m6-m9=1 or more;    R4=single bond or optionally substituted organic group having valence of 1+m3;    Y2=carbocation, ammonium cation, phosphonium cation, sulfonium cation, or iodonium cation;    R5=optionally substituted organic group having valence of 1+m4 or single bond;    Ra-Rc=6-50C aryl or 1-30C alkyl (both optionally substituted);    Y3=-O-(R'O)a3-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;    R6=-R8(-((Q3)n3-Y3)m7)-((Q1)n1-Y1(M1)a1(Z1)b1)m6 or -R9(-((Q3)n3-Y3)m9)-((Q2)n2-Y2(M2)a2(Z2)b2)m8;    R7=R2;    R8=optionally substituted organic group having valence of 1+m6+m7;and    R9=optionally substituted organic group having valence of (1+m8+m9).    (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 m2 is 1; (iii) When R4 is single bond, then m3 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 (XVII) or (XX);    (3) manufacture of high molecular compound having aromatic structural unit (I); and    (4) manufacture of high molecular compound having structural unit of formula (II).    R14=R1, -R16-((Q4)n4-Y4)m12 (ii), or -R17-((Q5)n5-Y5)m13 (iii);    R15=R2;    n5,m11,m14=0 or more;    X1-X4=group used in condensation polymerization;    R16=single bond or optionally substituted organic group having valence of 1+m12;    Y4=-CO2Rd, -SO3Rd, -SO2Rd, -PO3(Rd)2 or -B(Rd)2;    Rd,Re=6-50C aryl or 1-30C alkyl (both optionally substituted);    m12,m13,m17,m18=1 or more;    R17=single bond or optionally substituted organic group having valence of 1+m13;    Y5=haloalkyl, halo, -N(Re)2, -P(Re)2 or -Sre;    R18=R6, -R20(-((Q3)n3-Y3)m16)-((Q4)n4-Y4)m15 or -R21(-((Q3)n3-Y3)m18)-((Q5)n5-Y5)m17;    R19=R7;    R20=optionally substituted organic group having valence of 1+m15+m16;and    R21=optionally substituted organic group having valence of (1+m17+m18).    (i) Hydrogen in organic compound (II) is optionally substituted by substituents other than R11 and R12; (ii) Hydrogen in organic compound (XVII) is optionally substituted by substituents other than R14 and R15; and (iii) When R17 is single bond, then m13 is 1.