NOVELTY - Substituted oligomeric compounds are new.    USE - (I) are useful in electronic component that is dye-sensitized solar cell, for production of semiconducting layers in electronic components, and as dye (all claimed).    ADVANTAGE - (I) provide the solar cell that exhibit improved electronic and optical properties and have good processability and good wet processability.    DETAILED DESCRIPTION - Substituted oligomeric compounds of formula (K1-L1-R)n (I) are new.    n=3-6;    R=H or non-conjugated chain;    L=linear conjugated units of formula -(M)x-A-(M)y- (II);    x,y=0-20;    A=acceptor group comprising (-C(=C(NC)(COOH))-)m (IIIa), substituted fused heterocyclic moieties of formula (IIIb)-(IIIm) eg.(IIIb);    R,R3,R4=H or linear or branched 1-20C alkyl, preferably 1-12C alkyl, or linear 1-20C alkyl, preferably 1-12C alkyl which is optionally interrupted by at least one O or S or silylene, phosphonoyl or phosphoryl;    m=1-20;    X=N or C;    Y1=O or S and where in case of (IIIa) the NC-group is partially or completely hydrolyzed to form H2N-C(O)-group or OH-C(O)-group and the -COOH-group is esterified to form a-COOR1-group;    R1=1-10C alkyl;    M = aryl compound comprising dithieno(3,2-b,2',3'-d)thiophene-2,6-diyl, 3,4,7,8-tetrathia-dicyclopenta(a,e)pentalene-2,6-diyl, 3,4,5,8,9-pentathia-cyclopenta(1,2-a,4,3-a')dipentalene-2,6-diyl, 5,10-dithia-indeno(2,1-a)indene-2,8-diyl, thieno(3,4-b)thiophene-4,6-diyl, or substituted fused heterocyclic moiety of formula (Id)-(VId) eg.(Id); and    K1=branching group comprising substituted phenyl moiety ,(1,3,5)triazine-2,4,6-triyl.    An INDEPENDENT CLAIM is also included for electronic component comprising at least one semiconducting layer, where the semiconducting layer comprises (I).    DESCRIPTION OF DRAWING(S) - The figure illustrates schematic view of the dye-sensitized solar cell.    First electrode (1)    Second electrode (2)    Transparent conductive substrate (101,102)    Porous oxide semiconductor layer (103)    Substituted oligomeric compounds (104)