Thermally Activated Delayed Fluorescence Emitters for Efficient Electrochemiluminescence

Abstract Thermally activated delayed fluorescence (TADF) materials have attracted considerable interest due to their ability to enhance electrochemiluminescence (ECL). This is achieved through the efficient upconversion of triplet excitons and the subsequent radiative transitions. However, despite the potential of TADF materials, there have been few studies exploring their application in ECL field. Accordingly, in this concept, a number of TADF materials, which can be categorized into two principal groups based on intramolecular bond charge transfer and intermolecular space charge transfer, are introduced in order to explore the potential for their application in ECL. A brief review of their properties not only helps to deepen the understanding of the nature of TADF materials, but also provides basic guidance and support for the introduction of the TADF mechanism into ECL systems, with the aim of enhancing the luminescence efficiency of ECL.