| Title |
Diboraanthracene-doped polymer systems for colour-tuneable room-temperature organic afterglow / |
| Authors |
Jovaišaitė, Justina ; Kirschner, Sven ; Raišys, Steponas ; Kreiza, Gediminas ; Baronas, Paulius ; Juršėnas, Saulius Antanas ; Wagner, Matthias |
| DOI |
10.1002/anie.202215071 |
| Full Text |
|
| Is Part of |
Angewandte chemie-international edition.. Weinheim : Wiley-VCHGmbH. 2023, vol. 62, iss. 4, art. no. e202215071, p. [1-9].. ISSN 1433-7851. eISSN 1521-3773 |
| Keywords [eng] |
afterglow ; doped polymer films ; information recording ; room temperature phosphorescence ; thermally activated delayed fluorescence |
| Abstract [eng] |
Organic ultralong room temperature phosphorescence (RTP), or organic afterglow, is a unique phenomenon, gaining widespread attention due to its far-reaching application potential and fundamental interest. Here, two laterally expanded 9,10-dimesityl-dihydro-9,10-diboraanthracene (DBA) derivatives are demonstrated as excellent afterglow materials for red and blue-green light emission, which is traced back to persistent thermally activated delayed fluorescence and RTP. The lateral substitution of polycyclic DBA scaffold, together with weak transversal electron-donating mesityl groups, ensures the optimal molecular properties for (reverse) intersystem crossing and long-lived triplet states in a rigid poly(methyl methacrylate) matrix. The achieved afterglow emission quantum yields of up to 3 % and 15 %, afterglow lifetimes up to 0.8 s and 3.2 s and afterglow durations up to 5 s and 25 s (for red and blue-green emitters, respectively) are attributed to the properties of single molecules. |
| Published |
Weinheim : Wiley-VCHGmbH |
| Type |
Journal article |
| Language |
English |
| Publication date |
2023 |
| CC license |
|
