A Simple Approach to Room Temperature Phosphorescent Allenylidene Complexes

摘要

Owing to their potential application in optoelectronic devices, organometallic complexes containing a linear it-conjugated carbon chain have attracted much attention for more than twenty years.In allenylidene complexes, [L_nM=C=C= C(R~1)R~2], the presence of π interactions between the metal ion and the rigid, linear allenylidene bridge results in interesting electronic communication between the two terminal groups; therefore, these metal complexes appear to be good candidates for molecular wiring. For example, Wong et al. reported a dinuclear ruthenium unit, {Ru=C=C=C(2-py)2Ru), displaying intense infrared absorption attributed to the derealization of the electron density over both ruthenium ions and the allenylidene bridge.