Supramolecular approach for exciplex-forming systems

The exciplex-forming systems that can perform thermally activated delayed fluorescence (TADF) characters are emerging as appealing research due to their versatile applications in organic light-emitting devices (OLEDs). However, the lack of data to interpret the detailed D-A interactions impedes the further deep insight understanding of the exciplex excited state. This demand motivated us to establish an exciplex-enabling supramolecular system with X-ray structure analyses revealing the detailed donor-acceptor interactions, the thermodynamic parameters of complex formation, the photophysical property to verify the exciplex characters and the characteristics of the solution-processed OLED device employing this exciplex-forming supramolecular complex as an emitter. This unprecedented and tunable system opens a new platform for further exciplex studies. The detailed investigation of exciplex-forming systems achieved by this supramolecular approach will be presented.