Bimetallic cyclometalated iridium complexes bridged by a BODIPY linker.

Presented here is a new class of supramolecular cyclometalated Ir(iii) complexes. The 2 : 1 assemblies include two phosphorescent cyclometalated Ir(iii) centers spanned by a BODIPY bridge with pyridine substituents at the β-pyrrole positions. The three complexes, which vary with respect to the cyclometalating ligand on iridium, are prepared via a simple one-pot procedure, with the target complexes isolated in 31-75% yield.

Cyclometalated iridium-BODIPY ratiometric O sensors.

Here we introduce a new class of ratiometric O sensors for hypoxic environments. Two-component structures composed of phosphorescent cyclometalated Ir(iii) complexes and the well-known organic fluorophore BODIPY have been prepared by the 1 : 1 reaction of bis-cyclometalated iridium synthons with pyridyl-substituted BODIPY compounds. Two different cyclometalating ligands are used, which determine the relative energies of the iridium-centered and BODIPY-centered excited states, and the nature of the linker between iridium and BODIPY also has a small influence on the photoluminescence.

Monometallic and Bimetallic Platinum Complexes with Fluorinated β-Diketiminate Ligands.

Presented here are complexes of two different fluorinated β-diketiminate (NacNac) ligands with cyclometalated platinum. Reaction of the cyclometalated platinum dimers [Pt(C^N)(μ-X)] [C^N = 2-phenylpyridine (ppy), 2-(2,4-difluorophenyl)pyridine (Fppy); X = Cl, Br] with lithium salts of backbone-fluorinated β-diketiminate ligands produces two structure types, depending on the temperature of the reaction. At milder temperatures (<80 °C), the major product is an unusual halide-bridged diplatinum complex, demonstrating a unique NacNac binding mode bridging the two platinum centers.