Organic layer comprising regions having different electronic properties

Process for the production of an organic layer comprising a plurality of regions with different and complementary electronic properties, said process comprising

• subjecting at least one precursor selected from compounds of formula (I), (II), (IIa), (III) and (IV), or combinations thereof, to a reduction/re-aromatisation reaction and a retro-Favorskii reaction:
• in which
• R1, R2, R3, R4, R5, R7, R8, R9 and R10 are independently selected from:
• H, a halogen selected from Br, I, Cl, F, C1-C8 alkyl, vinyl, alkynyl, aryl, heteroaryl, benzyl, N, B, S, O, Sn, tri-alkyl-silane;
• R6 is selected from:
• H, C1-C8 alkyl, vinyl, alkynyl, aryl, benzyl, tri-alkyl-silane;
• and
• A indicates a 5-carbon atom ring or a 6-carbon atom ring optionally substituted with a propargyl alcohol group, in which the alcohol of the propargyl alcohol group is optionally substituted, or the A ring is not present;
• in which:
• R1, R2, R3, R4, R5 and R7 are independently selected from:
• H, a halogen selected from Br, I, Cl, F, C1-C8 alkyl, vinyl, alkynyl, aryl, heteroaryl, benzyl, N, B, S, O, Sn, tri-alkyl-silane;
• R6 and R8 are independently selected from:
• H, C1-C8 alkyl, vinyl, alkynyl, aryl, benzyl, tri-alkyl-silane;
• and
• X is selected from S, Se, N, O, methylene;
• in which
• R1, R2, R3, R4, R5 and R7 are independently selected from:
• H, a halogen selected from Br, I, Cl, F, C1-C8 alkyl, vinyl, alkynyl, aryl, heteroaryl, benzyl, N, B, S, O, Sn, tri-alkyl-silane;
• and
• R6 and R8 are independently selected from:
• H, C1-C8 alkyl, vinyl, alkynyl, aryl, benzyl, tri-alkyl-silane;
• in which:
• R1, R2, R4, R6, R7 and R8 are independently selected from:
• H, a halogen selected from Br, I, Cl, F, C1-C8 alkyl, vinyl, alkynyl, aryl, heteroaryl, benzyl, N, B, S, O, Sn, tri-alkyl-silane;
• R3 is selected from:
• H, C1-C8 alkyl, vinyl, alkynyl, aryl, benzyl, N;
• and
• R5 is selected from:
• H, C1-C8 alkyl, vinyl, alkynyl, aryl, benzyl, tri-alkyl-silane,
• wherein the reduction/re-aromatisation reaction is carried out with a reducing agent selected from:
• SnCl2/H+, 2-nitrobenzenesulfonylhydrazide and PCl3, while the retro-Favorskii reaction is carried out under strong basic conditions or by treating the precursor with a fluoride selected from tetrabutylammonium fluoride, KF and/or AgF.