Wavelength dependent photocatalytic H2 generation using iridium–Pt/Pd complexes

Abstract

Novel cyclometallated iridium-Pt/Pd dinuclear complexes containing the bridging ligand 2,2':5',2''-terpyridine (BPP) and the peripheral phenylpyridine (ppy) ligand produced hydrogen under both visible (470 nm) and UV (350 nm) irradiation. The turnover numbers using visible light were found to be significantly higher, indicating an interplay between two independent excited states, only one of which produces H(2) efficiently.

Protonation‐Dependent Luminescence of an Iridium(III) Bibenzimidazole Chromophore

“…Consequently, Ir III compounds should in general exhibit greater photostability than their Ru II analogues. [13] In this regard, a change from ruthenium(II) to iridium(III) chromophores appeared to be a promising approach to connect the switching properties of a bibenzimidazole chromophore with the more sophisticated lumines-cence of bis(phenylpyridine)iridium(III) complexes. Furthermore, iridium(III) bibenzimidazole complexes are active photosensitizers in water photoreduction.…”

Supramolecular bimetallic assemblies for photocatalytic hydrogen generation from water

“…21 These data indicate that excitation into states involving primarily the peripheral ligands does not necessarily result in internal conversion to excited states involving the bridging ligand, i.e. that the electronic coupling between excited states localised on peripheral and bridging ligands is not necessarily strong.…”

Two‐Photon Excitable Iridium Complex Containing Dipyrazolyltriazine as Cellular Imaging Dyes

“…Compound C2 (Method A): 2 (25.7 mg, 0.024 mmol) and L2 (20 mg, 0.048 mmol) were dissolved in 10 mL of dichloromethane/methanol (2:1) and refluxed at 90 °C overnight under nitrogen. The reaction mixture was cooled and the solvent were removed under reduced pressure.…”