Donor–Acceptor Iptycenes with Thermally Activated Delayed Fluorescence
Abstract
A new donor–acceptor iptycene containing carbazole donors and a thiadiazoloquinoxaline acceptor was synthesized and its photo‐ and electrochemical properties evaluated. The key intermediate 1 allows a lateral modification through cross‐coupling, and the (triisopropylsilyl)acetylene product 2 exhibits bright yellow fluorescence with emission lifetimes of 2.42 µs in deoxygenated hexane. The long lifetime and high quantum efficiency (73 %) is quenched by O2 and therefore attributed to thermally activated delayed fluorescence (TADF). This approach allows functionalization through cross‐coupling reactions and depicts a promising scaffold for the synthesis of TADF‐active molecules.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Aug 31, 2017
- Source ID
- 10.1002/ejoc.201700703
Entities
People
- Constantin‐christian A. Voll
- Jens U. Engelhart
- Marc A Baldo
- Markus Einzinger
- Timothy M. Swager
Organizations
- Air Force Office of Scientific Research
- Massachusetts Institute of Technology