Versatile Molecular Functionalization for Inhibiting Concentration Quenching of Thermally Activated Delayed Fluorescence

• DOI: 10.1002/adma.201604856
• Publication Date: 2016-11-16T18:24:15Z
• Authors: Jiyoung Lee; Naoya Aizawa; Masaki Numata; Chihaya Adachi; Takuma Yasuda
• Keywords: 01 natural sciences; 0104 chemical sciences

Concentration quenching of thermally activated delayed fluorescence is found to be dominated by electron-exchange interactions, as described by the Dexter energy-transfer model. Owing to the short-range nature of the electron-exchange interactions, even a small modulation in the molecular geometric structure drastically affects the concentration-quenching, leading to enhanced solid-state photoluminescence and electroluminescence quantum efficiencies.