Supramolecular Ir(III)–Ln(III) Heterometallic Dyads for White Electroluminescence

GOALS

A new generation of more efficient and durable lighting sources must be developed to meet the European Union’s ambitious goal of increasing energy efficiency by 27% by 2030. Since lighting accounts for nearly 20% of the EU’s electrical energy consumption, adopting more efficient lighting solutions is crucial. Solid-state lighting (SSL) sources, such as Light Emitting Diodes (LEDs) and Organic LEDs (OLEDs), are emerging as next-generation systems for general illumination. The Lefko-Phoς d-f project aims to develop single-molecule white-light-emitting dyads by mixing complexesbelonging to both the d- and the f-block. These materials would feature bridged bimetallic systems combining blue or sky-blue emissive iridium(III) complexes and f-metal complexes from europium(III) (red) and dysprosium(III) (yellow); a modified phenyl-oxadiazole bridging unit will serve as the connector. This novel approach would maximise the chances to get electronically uncoupled dyads in reality, leading to white-emissive active materials for OLEDs.