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

Bonello, Rhodri Owen, Morgan, Ian Rhys ORCID:, Yeo, Benjamin Roy, Jones, Lucy E. J., Kariuki, Benson ORCID:, Fallis, Ian Andrew ORCID: and Pope, Simon J. A. ORCID: 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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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

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