Chemiluminescence detection with water-soluble iridium(III) complexes containing a sulfonate-functionalised ancillary ligand

Josephine Truong; Kara B. Spilstead; Gregory J. Barbante; Egan H. Doeven; David J. D. Wilson; Neil W. Barnett; Luke C. Henderson; Jarrad M. Altimari; Samantha C. Hockey; Ming Zhou; Paul S. Francis

doi:10.1039/C4AN01366B

Chemiluminescence detection with water-soluble iridium(iii) complexes containing a sulfonate-functionalised ancillary ligand†

Josephine Truong,^a Kara B. Spilstead,^a Gregory J. Barbante,^a Egan H. Doeven,^a David J. D. Wilson,^b Neil W. Barnett,^a Luke C. Henderson,^ac Jarrad M. Altimari,^a Samantha C. Hockey,^a Ming Zhou^d and Paul S. Francis*^a

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^a Centre for Chemistry and Biotechnology, School of Life and Environmental Sciences, Faculty of Science, Engineering and Built Environment, Deakin University, 75 Pigdons Road, Waurn Ponds, Victoria 3216, Australia
E-mail: paul.francis@deakin.edu.au

^b Department of Chemistry, La Trobe Institute for Molecular Sciences, La Trobe University, Victoria 3086, Australia

^c Institute for Frontier Materials, Deakin University, 75 Pigdons Road, Waurn Ponds, Victoria 3216, Australia

^d SunaTech Inc., BioBAY, Suzhou Industrial Park, Suzhou, Jiangsu, P. R. China

Abstract

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.

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Chemiluminescence detection with water-soluble iridium(iii) complexes containing a sulfonate-functionalised ancillary ligand†

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Chemiluminescence detection with water-soluble iridium(III) complexes containing a sulfonate-functionalised ancillary ligand

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