ИСТИНА

Organic electronics are based on organic semiconductor materials. Among them, organic linear conjugated oligomers are of great interest for organic electronics and photonics as materials on the basis of which large-scale single crystals can be obtained by growth methods from solutions or from vapor. It should be noted that conjugated oligomers in organic electronics are individual compounds, since the classical mixture of oligomers with different numbers of repeating monomer units most often has mediocre semiconductor properties. This feature makes it possible to obtain ultrapure materials, which has a beneficial effect on their semiconductor and luminescent properties. This report will present the features of the synthesis of conjugated oligomers based on phenyls and thiophenes. Various approaches and optimal conditions are demonstrated. It is shown how various synthetic schemes can lead to by-products of different structure, which can significantly affect the properties of the resulting materials.1 Some structure-property patterns for thiophene-phenylene oligomers have been identified.2-7 The introduction of 2,1,3-benzothiadiazole fragment into oligomers leads to significant changes in their properties. Benzothiadiazole is one of the most widely used acceptor moieties in low band gap materials for organic electronic applications. Motivation for incorporation of this heterocyclic unit into oligomers is its high absorption coefficient and luminescent quantum yield, large Stocks shift, low bandgap and excellent thermal stability. A large library of linear oligomers containing 2,1,3-benzothiadiazole fragment was synthesized.8-10 The optical and thermal properties of the new compounds have been studied. The presented organic conjugated oligomers can be used in various devices of organic photonics and electronics, such as organic field-effect transistors (OFETs)3,4, organic light-emitting transistors (OLETs)5,7, spectral shifting fibers11, liquid scintillators12, organic light-emitting diodes (OLEDs), CIGS photovoltaic devices13. Some oligomers are commercialized by a startup Limited Liability Company "Luminescent Innovative Technologies" (LumInnoTech LLC). All the details can be found on www.luminnotech.com