Approaching White-Light Emission from a Phosphorescent Trinuclear Gold(I) Cluster by Modulating Its Aggregation Behavior

摘要

The development of white-light-emitting materials and devices plays an important role in the next-generation solid-state lighting technology. In this field, there are generally two types of working principles to achieve white light, either from multiple cooperating emitters, or from a single multi-functioning emitter. Both cases generate at least dual emissions (e.g. bluish green and reddish orange) that are complementary colors of white light. The single multifunc-tioning emitter type is superior to the multiple cooperating;; emitters because it can prevent phase-separation and color variation problems. However it remains a challenge to design and synthesize single molecules, especially phosphorescent coordination complexes, that emit across the broad visible spectrum and exhibit white light.