Luminescent Mn(Ⅱ) complexes have garnered extensive attention due to their unique properties, including color tunability, high photoluminescence quantum yield (PLQY), large Stokes shift, and thermal stability. The emission color of these complexes can be tuned to exhibit orange, green, and red light, depending on the local environment of the Mn²⁺ ion. These versatile characteristics render Mn(Ⅱ) complexes highly attractive for a variety of applications, such as light-emitting diodes (LEDs) and radiation detection.In this perspective, we elucidate the relationship between the luminescence properties of Mn(Ⅱ) complexes and their corresponding crystal structures, as well as the local environment of the Mn²⁺ ions. We then provide a comprehensive summary of the recent advancements in the application of luminescent Mn(Ⅱ) complexes in the fields of LEDs and radiation detection. Finally, we discuss the current challenges and offer an outlook for future research directions in the study of luminescent Mn(Ⅱ) complexes.
