Вид документа : Статья из журнала Шифр издания : Автор(ы) : Verbitskiy E. V., Kvashnin Y. A., Rusinov G. L., Charushin V. N., Le Poul P., Achelle S., Bures F., Barsella A. Заглавие : Push–pull derivatives based on 2,4'-biphenylene linker with quinoxaline, [1,2,5]oxadiazolo[3,4-b]pyrazine and [1,2,5]thiadiazolo[3,4-b]pyrazine electron withdrawing parts Место публикации : Molecules. - 2022. - Vol. 27, № 13. - Ст.4250 Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: A series of novel V-shaped quinoxaline, [1,2,5]oxadiazolo[3,4-b]pyrazine and [1,2,5]thiadiazolo[3,4-b]pyrazine push–pull derivatives with 2,4′-biphenylene linker were designed and their electrochemical, photophysical and nonlinear optical properties were investigated. [1,2,5]Oxadiazolo[3,4-b]pyrazine is the stronger electron-withdrawing fragment as shown by electrochemical, and photophysical data. All compounds are emissive in a solid-state (from the cyan to red region of the spectrum) and quinoxaline derivatives are emissions in DCM solution. It has been found that quinoxaline derivatives demonstrate important solvatochromism and extra-large Stokes shifts, characteristic of twisted intramolecular charge transfer excited state as well as aggregation induced emission. The experimental conclusions have been justified by theoretical (TD-)DFT calculations. Доп.точки доступа: Verbitskiy, E. V.; Kvashnin, Y. A.; Rusinov, G. L.; Русинов Геннадий Леонидович; Charushin, V. N.; Le Poul, P.; Achelle, S.; Bures, F.; Barsella, A.