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Silver nanoparticles functionalised with a luminescent iridium complex: phosphorescent hybrid materials

Hallett, Andrew Jon, Broomfield, Matthew, Christian, Paul and Pope, Simon J. A. 2014. Silver nanoparticles functionalised with a luminescent iridium complex: phosphorescent hybrid materials. Transition Metal Chemistry 39 (2) , pp. 195-198. 10.1007/s11243-013-9789-2

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Abstract

A thioester-terminated di-imine ligand (L 1 ) reacts with [(ppy)2Ir-(μ-Cl)2-Ir(ppy)2] (ppy = 2-phenylpyridine) in 2-methoxyethanol followed by ion exchange to give [Ir(ppy) 2 (L 1 )]PF 6 (Ir-L 1 ), a cationic iridium(III) biscyclometalated complex functionalised with a thioester-terminated alkyl chain on the ancillary bipyridine ligand. X-ray crystallographic data confirm that L 1 is coordinated in a bidentate fashion with an octahedral arrangement of ligands around iridium with retention of the thioester moiety. [Ir(ppy) 2 (L 1 )]PF 6 was found to be luminescent with 3MLCT emission observed at 611 nm (τ = 71 ns). [Ir(ppy) 2 (L 1 )]PF 6 was attached to small-diameter silver nanoparticles to yield visibly luminescent Ir–SNP hybrid conjugates (confirmed by TEM and EDX measurements) with retention of the 3MLCT emission, blue-shifted by 13 nm.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Subjects: Q Science > QD Chemistry
Publisher: Springer
ISSN: 0340-4285
Last Modified: 18 Feb 2019 11:05
URI: http://orca-mwe.cf.ac.uk/id/eprint/58144

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