Over the past ten years phosphorescent transition-metal complexes have emerged as an interesting class of compounds for application as emitters in organic light-emitting devices (OLEDs). Due to the effect known as triplet harvesting, quantum yields of up to 100% are possible, which makes them more efficient than fluorescent lumophores.We report on a series of mono- and bimetallic N-heterocyclic C^C* cyclometalated platinum(II) complexes as a new class of efficient phosphorescent emitters for OLED applications. By different substitution patterns the electronic nature of the emitting state can be altered, which allows to tune the emission behaviour. The synthesis, solid-state structures and photophysical properties are presented together with quantum chemical DFT calculations.

Phosphorescent C^C* cyclometalated Pt(II) NHC emitters

247th National Meeting (2014)

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