TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (Claimed): Preparation of (I) comprises e.g. reaction of diborane compound of formula (II) in the presence of an aprotic organic solvent, a transition metal catalyst and a base with e.g. 9-bromoperylen-3,4-dicarboxylic acidimide compound of formula (IIIa) to give 9-(dioxaborolan-2-yl)perylen-3,4-dicarboxylic acid imide of formula (IVa); reaction of (IVa) with naphthaline compound of formula (IIIb) in the presence of an organic solvent, in a mixture with water, a transition metal catalyst and a base of a Suzuki-coupling reaction, to give (V); cyclodehydration of (V) in the presence of a highly stable organic solvent, alkali- or earthalkalimetal containing base and a nitrogen containing auxiliary base, to give 11-nitroterrylen-3,4-dicarboxylic acidimide compound of formula (VIa); reduction of (VIa) with hydrogen gives 11-aminoterrylen-3,4-dicarboxylicimide compound of formula (VIb), which undergoes diazotisation and forms diazoniumsalt; reaction of diazoniumsalt with metalbromide or -iodide gives 11-haloterrylen-3,4-dicarboxylicacidimide compound of formula (VIc) (where Hal is Br or I); coupling of (VIc) in the presence of organic transition metal complex as a catalyst, free ligand molecule and an aprotic solvent gives (VII); and cyclodehydration of (VII) takes place in a organic reaction medium with hydroxy- and amino functional groups and an insoluble base, to give (I) (where Ra is not hydrogen). Preferred Definitions:    R=H, 1-30C-alkyl (in which the carbon chain is interrupted by O or CO, optionally substituted by CN, 1-6C-alkoxy, aryl (optionally substituted by 1-18C alkyl or 1-6C-alkoxy)) or 5-7 membered heterocycle containing nitrogen (optionally substituted by heteroatom or aromatic compound) or 5-8C-cyloalkyl (optionally substituted by 1-6C-alkyl), phenyl, naphthyl, pyridyl or pyrimidyl (optionally substituted by 1-18C-alkyl, 1-6C-alkoxy, CN, NO 2, halo, CONR 2R 3, SO 2R 2, phenyl or naphthylazo (optionally substituted by 1-10C-alkyl, 1-6C-alkoxy or CN));    Ra=phenoxy, phenylthio, pyridyloxy, pyrimidyloxy, pyridylthio, pyrimidylthio (optionally substituted with 1-12C alkyl or 1-12C alkoxy), H or Br;    R 1=H or 1-6C alkyl; and    R 2, R 3=H, 1-18C alkyl (optionally substituted with 1-6C alkyl, 1-6C alkoxy, halo, OH, carboxy and/or CN) or (hetero)aryl.    EXAMPLE - A solution of N-(1-heptyloctyl)-9-bromoperylene-3,4-dicarboxylic acidimide (1.2 g) in dioxane (20 ml) was added to bis(pinacolato)diborane (558 mg) potassiumacetate (558 mg) and (1,1'-bis(diphenylphosphino)ferrocen)palladium(II)chloride (44 mg). The obtained mixture was heated under argon at 70 degrees C and was held over night. The mixture was worked up to give N-(1-heptyloctyl)-9-4,4,5,5-tetramethyl-1,3,2-dioxaboran-2-yl-perylen-3,4-dicarboxylic acidimide (a). To the solution of (a) (1 g), 1,4-dibromnaphthaline (0.22 g) in toluol (40 ml) was added first and a solution of potassium carbonate (0.63 g) in water (20 ml), ethanol (2 ml) and tetrakis(triphenylphosphin)palladium(0) (0.09 g) were added. Subsequently the mixture was heated under argon at 80 degrees C and stirred for 16 hours. The reaction mixture was worked up to give naphthalin-1,4-bis(N-(1-heptyloctyl)perylen-3,4-dicarboxylic acidimide) (b). A mixture of (b) (0.10 g), aqueous-free aluminum chloride (0.09 g) and chlorobenzol (2 ml) was stirred for 20 minutes at 75 degrees C. The resultant mixture was worked up to give N,N'-bis(1-heptyloctyl)pentarylen-3,4:15,16-tetracarboxylic acidiimide.