NOVELTY - A high-molecular compound having benzo(k)fluoranthene-containing structural unit (I) and nitrogen-containing structural unit (II), is new.    USE - New high-molecular compound e.g. conjugated polymer compound is used for polymer composition and solution for organic thin-film film used for light-emitting element for planar light source and display apparatus (all claimed). Uses include but are not limited to conductive thin film material, organic solar cell material, organic semiconductor for organic transistor, computer, television, portable terminal, mobile telephone, car navigation and video camera.    ADVANTAGE - The light-emitting element containing the high-molecular compound has excellent luminous efficiency, durability and heat resistance.    DETAILED DESCRIPTION - A high-molecular compound having benzo(k)fluoranthene-containing structural unit of formula (I) and nitrogen-containing structural unit of formula (II), is new.    R1-R10=H, -O-Ra, or alkyl, aryl or monovalent heteroaryl (all optionally substituted);    Ra=alkyl, aryl or monovalent heteroaryl (all optionally substituted);    Ar1-Ar6=arylene or bivalent heteroaryl (both optionally substituted), or bivalent group formed by connecting 2 or more of arylene and bivalent heteroaryl;    a,b,y=0 or 1;    or Ar1+Ar2, Ar2+Ar3=5-7-membered ring formed by direct bonding or bonding through -O-, -S-, -C(=O)-, -C(=O)-O-, -N(Ra)-, -C(=O)-N(Ra)- or -C(Ra)2-;    R11-R13=H, or alkyl, aryl, monovalent heteroaryl or arylalkyl (all optionally substituted);and    x=0-3.    INDEPENDENT CLAIMS are included for the following:    (1) manufacture of high-molecular compound;    (2) halogen-containing compound of formula (XX);    (3) polymer composition, which contains high-molecular compound, and hole-transport material, electron transport material and/or luminescent material; and    (4) solution, which contains high-molecular compound and a solvent.    R3a,R4a,R8a,R9a=H, -O-Ra, or alkyl, aryl or monovalent heteroaryl (all optionally substituted);    Z1,Z2=substituent (a) or substituent (b);    substituent (a)=chloro, bromo, iodo or -O-S(=O)2R16;    R16=alkyl, or aryl optionally substituted by alkyl, alkoxy, nitro, fluoro or cyano;    substituent (b)=-B(OR17)2, -BF4Q1, -MgY1, -ZnY2, or -Sn(R18)3;    R17,R18=H or alkyl;    or R17+R17=ring;    Q1=monovalent cation of lithium, sodium, potassium, rubidium or cesium;    Y1,Y2=chloro, bromo or iodo;and    or R18+R18+R18=ring.    (i) Any one of R3a, R4a, R8a and R9a is aryl or monovalent heteroaryl (both optionally substituted), the other is H, -O-Ra, or alkyl, aryl or monovalent heteroaryl (all optionally substituted); and (ii) One of R3a and R4a, and one of R8a and R9a is aryl or monovalent heteroaryl (both optionally substituted), the other of R3a and R4a, and R8a and R9a is H, -O-Ra, or alkyl, aryl or monovalent heteroaryl (all optionally substituted).