Alkyl chain functionalised Ir(iii) complexes: synthesis, properties and behaviour as emissive dopants in microemulsions

Stokes, Emily C., Shoetan, Ibrahim O., Gillman, Alice M., Horton, Peter N., Coles, Simon J., Woodbury, Simon E., Fallis, Ian A. ORCID: https://orcid.org/0000-0001-7361-0182 and Pope, Simon J. A. ORCID: https://orcid.org/0000-0001-9110-9711 2024. Alkyl chain functionalised Ir(iii) complexes: synthesis, properties and behaviour as emissive dopants in microemulsions. RSC Advances 14 (10) , pp. 6987-6997. 10.1039/D3RA06764E

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Abstract

Six iridium(III) complexes of the general form [Ir(C^N)2(N^N)]X (where C^N = cyclometalating ligand; N^N = disubstituted 2,2′-bipyridine), and incorporating alkyl chains of differing lengths (C8, C10, C12), have been synthesised and characterised. The complexes have been characterised using a variety of methods including spectroscopies (NMR, IR, UV-Vis, luminescence) and analytical techniques (high resolution mass spectrometry, cyclic voltammetry, X-ray diffraction). Two dodecyl-functionalised complexes were studied for their behaviour in aqueous solutions. Although the complexes did not possess sufficient solubility to determine their critical micelle concentrations (CMC) in water, they were amenable for use as emissive dopants in a N-methyl C12 substituted imidazolium salt microemulsion carrier system with a CMC = 36.5 mM. The investigation showed that the metal doped microemulsions had increased CMCs of 40.4 and 51.3 mM and luminescent properties characterised by the dopant.

Item Type:	Article
Date Type:	Published Online
Status:	Published
Schools:	Chemistry
Publisher:	Royal Society of Chemistry
Date of First Compliant Deposit:	12 March 2024
Date of Acceptance:	16 February 2024
Last Modified:	12 Mar 2024 12:28
URI:	https://orca.cardiff.ac.uk/id/eprint/166606

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