| Title |
A twisted double donor in donor–acceptor–donor D2–D1–A–D1–D2 type emitters yields multicomponent charge-transfer emission |
| Authors |
Blazevicius, Dovydas ; Krucaite, Gintare ; Bogoslovska, Alla ; Grigalevicius, Saulius ; Ali, Amjad ; Agren, Hans ; Baryshnikov, Glib ; Dimitriev, Oleg |
| DOI |
10.1039/d5ra02848e |
| Full Text |
|
| Is Part of |
RSC Advances.. Cambridge : Royal Society of Chemistry. 2025, vol. 15, iss. 23, p. 18559-18565.. ISSN 2046-2069 |
| Abstract [eng] |
Complex donor arms in thermally-activated delay fluorescence (TADF) molecules can potentially provide additional options for charge-transfer (CT) emission through higher twisting disorder, leading to broader emission spectra. Here we design novel TADF emitters with double twisted donor moieties and show that a structural complication of the carbazole-based donor arms by changing the molecular structure from D-A-D to D2-D1-A-D1-D2 yields a transition from a dual to a triple emission band with an additional CT emission component, providing a corresponding red shift and increasing low-energy emission contribution. The revealed relationship between increased complexity of the donor moiety and the multicomponent CT emission band in the D-A-D structures provides a clue for design of TADF emitters with extended emission spectra. |
| Published |
Cambridge : Royal Society of Chemistry |
| Type |
Journal article |
| Language |
English |
| Publication date |
2025 |
| CC license |
|
