“…Depending on the catalyst used, it may have intramolecular branched or cross‐linked structures, [6–8] including those with phenylene fragments [9,10] . Polydiethynylbenzene (PDEB), which has a different structure, for example, has been studied as an insoluble super‐crosslinked material with a micro/mesoporous structure, [11,12] as a thin‐film material for dry lithography, [13] as a modifier of industrial resins and oligoesteracrylates, [14] in the creation of humidity sensors, [15] in the creation of cobalt‐organic complexes and soft ferromagnets, [6,16,17] as a part of ablation material [18,19] and composites, [20] in the development of materials with photoluminescence, electroluminescence and nonlinear optical properties [21] …”