Novel luminescent platinum(II) complexes. Photophysics and photochemistry of Pt(5,5′-Me2bpy)(CN)2(5,5′-Me2bpy=5,5′-dimethyl-2,2′-bipyridine)

Abstract

The Pt(5,5′-Me₂bpy)(CN)₂ complex (5,5′-Me₂bpy = 5,5′-dimethyl-2,2′-bipyridine) displays intense photoluminescence in fluid solution (emission maximum, 502 nm; τ₀, 6.3 µs) at room temperature; the excited ππ* triplet of Pt(5,5′-Me₂bpy)(CN)₂ is a powerful one-electron oxidant (E^∘, ∼1.0V) and reductant (E^∘≤–1.5V vs. AgNO₃/Ag) which undergoes oxidative and reductive quenching with inorganic and organic substrates.