ИСТИНА

Synthetic organic semiconductor materials are of great interest; they are being actively developed and investigated, giving prospects for development in many modern fields of science and technology: organic photovoltaics, electronics, sensors, etc. Organic molecules consisting of condensed heteroaromatic units occupy a separate platform in the growing base of organic conducting compounds. The rigid condensed structure of these compounds provides a π-conjugation with good conductivity, high oxidation stability and dense molecular packing in the block. Among all heteroacenes, benzothieno[3,2-b]benzothiophene derivatives (BTBT) have already managed to stand out and prove themselves as excellent p-type semiconductors, they are actively developed in many studies and give good results. But materials based on the BTBT block usually have insufficient solubility to be processed, and usually can act only as p-type conductors. Of great interest is a block of indole[3,2-b]idol (IDID) similar in structure to that of BTBT, but having benzopyrrole fragments instead of benzothiophene, which makes it possible to modify alkyl or aromatic substituents in two NH-positions, thereby controlling the solubility and conductive properties of materials. It is expected that molecular D-A structures based on this block may show not only a better solubility and hole mobility, but also have ambipolar charge transport, which will allow them to be used not only in organic field-effect transistors, but also in sensors and lasers, as well as single-component organic solar cells. This work deals with the synthesis and investigation of the new group of IDID-based oligomers, which have various aliphatic and aromatic substituents and show promising properties for organic electronics and photovoltaics.