Chemiluminescence detection with water-soluble iridium(III) complexes containing a sulfonate-functionalised ancillary ligand
journal contributionposted on 2014-10-15, 00:00 authored by Josephine Truong, Kara SpilsteadKara Spilstead, Gregory Barbante, Egan DoevenEgan Doeven, D J D Wilson, Neil BarnettNeil Barnett, Luke HendersonLuke Henderson, Jarrad Altimari, Samantha Hockey, M Zhou, Paul FrancisPaul Francis
The chemiluminescence from four cyclometalated iridium(III) complexes containing an ancillary bathophenanthroline-disulfonate ligand exhibited a wide range of emission colours (green to red), and in some cases intensities that are far greater than the commonly employed benchmark reagent, [Ru(bpy)3]2+. A similar complex incorporating a sulfonated triazolylpyridine-based ligand enabled the emission to be shifted into the blue region of the spectrum, but the responses with this complex were relatively poor. DFT calculations of electronic structure and emission spectra support the experimental findings. © 2014 the Partner Organisations.