NOVELTY - Pyromellitic diimide derivatives (I) are new.    USE - As a semiconductor material in organic electronics and organic photovoltaics, as an n-semiconductor in organic field-effect transistors; in electroluminescent arrangement such as organic light-emitting diode (OLED), and in organic solar cell (claimed).    ADVANTAGE - The compound provides organic semiconductors having advantages over the classical inorganic semiconductors, e.g. better substrate compatibility and better processibility of the semiconductor components based on them; allows processing on flexible substrates and enables their interface orbital energies to be adjusted precisely to the particular application range by the methods of molecular modeling; and reduces costs of such components.    DETAILED DESCRIPTION - Pyromellitic diimide derivatives of formula (I) are new.    R1 and R2=branched 3-30C alkyl, linear or branched perfluoro-1-30C alkyl, linear or branched 1H,1H-perfluoro-2-30C alkyl, linear or branched 1H,1H,2H,2H-perfluoro-3-30C alkyl or a phenyl-(1-30C)-alkyl (where the benzene ring of the phenylalkyl is mono- to penta-substituted by F, Cl, Br, CN or perfluoro-1-30C alkyl);    X1 and X2=F, Cl, Br, CN, COOR'a, CONR'bR'c, branched 3-30C alkyl, linear or branched perfluoro-3-30C alkyl, linear or branched 1H,1H-perfluoro-2-30C alkyl, linear or branched 1H,1H,2H,2H-perfluoro-3-30C alkyl, branched NH(3-30C alkyl), linear or branched NH(perfluoro-1-30C alkyl), linear or branched NH(1H,1H-perfluoro-2-30C alkyl) or linear or branched NH(1H,1H,2H,2H-perfluoro-3-30C alkyl);    R'a, R'b and R'c=H or 3-30C alkyl.    INDEPENDENT CLAIMS are included for the following:    (1) an organic field-effect transistor comprising a substrate having at least one gate structure, a source electrode and a drain electrode and at least one of the compound (I) as a semiconductor material;    (2) a substrate comprising organic field-effect transistors, where at least some of the field-effect transistors comprising at least one of the compound (I);    (3) a semiconductor unit comprising at least one of the substrate;    (4) an electroluminescent arrangement comprising an upper electrode, a lower electrode, where at least one of the electrode is transparent, an electroluminescent layer and optionally an auxiliary layer, where the electroluminescent arrangement comprises at least one of the compound (I); and    (5) an organic solar cell comprising at least one of the compound (I).