We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Aggregation‐Induced Emission by Molecular Design: A Route to High‐Performance Light‐Emitting Electrochemical Cells.
- Authors
Tang, Shi; Wang, Zhi; Xu, Yanzi; Ma, Huili; Wang, Jia; Larsen, Christian; Dang, Dongfeng; Wang, Ergang; Edman, Ludvig
- Abstract
The emission efficiency of organic semiconductors (OSCs) often suffers from aggregation caused quenching (ACQ). An elegant solution is aggregation‐induced emission (AIE), which constitutes the design of the OSC so that its morphology inhibits quenching π–π interactions and non‐radiative motional deactivation. The light‐emitting electrochemical cell (LEC) can be sustainably fabricated, but its function depends on motion of bulky ions in proximity of the OSC. It is therefore questionable whether the AIE morphology can be retained during LEC operation. Here, we synthesize two structurally similar OSCs, which are distinguished by that 1 features ACQ while 2 delivers AIE. Interestingly, we find that the AIE‐LEC significantly outperforms the ACQ‐LEC. We rationalize our finding by showing that the AIE morphology remains intact during LEC operation, and that it can feature appropriately sized free‐volume voids for facile ion transport and suppressed non‐radiative excitonic deactivation.
- Subjects
ELECTRIC batteries; ORGANIC semiconductors; CATALYST poisoning
- Publication
Angewandte Chemie, 2023, Vol 135, Issue 23, p1
- ISSN
0044-8249
- Publication type
Academic Journal
- DOI
10.1002/ange.202302874