Exploring Multi-functionality in Spin Crossover Complexes: A Special Emphasis on Synergistic Luminescence and Dielectric Properties

Molecules exhibiting multifunctional properties, such as magnetic bistability, luminescence, and dielectric properties have excellent potential for application in magnetic optoelectronic devices. Research into luminescent magnets and switching materials is continuously expanding because, in these cases, spin-state change can be expressed by the fluorescence signal, and this can provide materials with practical application prospects. This review presents the recent progress in multi-functional spin crossover (SCO) systems, particularly emphasizing the need for synergistic luminescence or dielectric response of SCO systems. The present work highlights syntheses, design strategies, crystal structures, magnetic, luminescence, and dielectric response to obtain materials with potential applications in switches, sensors, and other practical domains.