Frontiers in circularly polarized photoluminescence and electroluminescence of chiral manganese(II) complexes

Abstract

Chiral luminescence materials and their application in biological sensors, mechanoluminescence, triboluminescence, radioluminescence, X-ray scintillation, and circularly polarized organic light emitting diodes have attracted wide attentions due to their circularly polarized luminescence properties. Among the chiral luminescence materials, the phosphorescent complexes with noble metals have been widely investigated, benefiting from the ability to harvest both singlet and triplet excitons in devices. However, phosphorescent manganese(II) complexes exhibit cost-effectiveness, good luminescent properties, and low toxicity, but the development of chiral Mn(II) complexes is slow. This review mainly focuses on the molecular design strategies, photophysical and chiroptical properties, and applications of chiral Mn(II) complexes in different aspects, while discusses the recent progress, challenges and outlook in this area.