New push-pull systems based on indolo[3,2-b]carbazole and 1,2,4,5-tetrazine: synthesis, photophysical, and charge transport properties / A. S. Steparuk, S. G. Tolshchina, N. A. Kazin [et al.] // Russian chemical bulletin. - 2021. - Vol. 70, № 6. - P1109-1117 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): 1,2,4,5-TETRAZINES -- NUCLEOPHILIC SUBSTITUTION -- INDOLO[3,2-B]CARBAZOLE -- PUSH-PULL SYSTEMS Аннотация: 5,11-Dihydroindolo[3,2-b]carbazoles were for the first time modified with acceptor 1,2,4,5-tetrazine fragments. The photophysical and charge-transport properties of the synthesized donor-acceptor heterocyclic systems were studied. It was shown that the introduction of the 1,2,4,5-tetrazine moieties makes it possible to increase the hole and electron mobility by one and two orders of magnitude, respectively, as compared to analogous 5,11-dihydroindolo-[3,2-b]carbazole derivatives studied previously. |