Luminescent rhenium(I) complexes of substituted imidazole[4,5-f]-1,10-phenanthroline derivatives

Bonello, Rhodri Owen, Morgan, Ian Rhys ORCID: https://orcid.org/0000-0002-0253-1855, Yeo, Benjamin Roy, Jones, Lucy E. J., Kariuki, Benson ORCID: https://orcid.org/0000-0002-8658-3897, Fallis, Ian Andrew ORCID: https://orcid.org/0000-0001-7361-0182 and Pope, Simon J. A. ORCID: https://orcid.org/0000-0001-9110-9711 2014. Luminescent rhenium(I) complexes of substituted imidazole[4,5-f]-1,10-phenanthroline derivatives. Journal of Organometallic Chemistry 749 , pp. 150-156. 10.1016/j.jorganchem.2013.08.031

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Abstract

Seven new chromophoric ligands (L1–L7), based upon the fused imidazo[4,5-f]-1,10-phenanthroline core, were dually functionalised with a variety of aryl substituents of varying character, and can be synthesised utilising a one-pot methodology. The resultant ligands are fluorescent (λem = 408–425 nm) and amenable to further reactivity with pentacarbonylbromorhenium to give coordination complexes of the form fac-[ReBr(CO)3(NˆN)] (where NˆN = L1–L7). The complexes have been fully characterised using a variety of spectroscopic and analytical techniques, and structurally confirmed for three examples using X-ray diffraction studies. These new rhenium complexes are all luminescent, revealing classical 3MLCT emission in aerated solution; the complexes show that the 3MLCT excited state is moderately sensitive to the nature of functionalisation of the chelated imidazo[4,5-f]-1,10-phenanthroline ligand.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Chemistry
Subjects:	Q Science > QD Chemistry
Uncontrolled Keywords:	Rhenium; Diimine; Luminescence
Publisher:	Elsevier
ISSN:	0022-328X
Last Modified:	25 Oct 2022 09:21
URI:	https://orca.cardiff.ac.uk/id/eprint/58145

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