Analysis of the emitting states of an Ir(III) complex with strong blue emission

Date

2015

Authors

Liew, Jane Y.
Lo, Shih-Chun
Burn, Paul L.
Krausz, Elmars
Hall, Jeremy
Moore, Evan G.
Riley, Mark J

Journal Title

Journal ISSN

Volume Title

Publisher

Elsevier

Abstract

Temperature dependent luminescence, lifetimes and magnetic circularly polarised luminescence (MCPL) are reported between 1.7 and 80 K and in magnetic fields of 0-5 T for [Ir(ptz)3]. Data analysis reveals the temperature and field dependent behaviour is due to the sublevel structure of the emitting state. We have determined energy separations of ΔEII,I = 10 cm-1 and ΔEIII,I = 45 cm-1 between three triplet sublevels, with intrinsic luminescence lifetimes of τI = 160 μs, τII = 10 μs and τIII = 800 ns. We compare these with values for the green emitter, [Ir(ppy)3] and discuss implications for the excited state geometries.

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Citation

Source

Chemical Physics Letters

Type

Journal article

Book Title

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DOI

10.1016/j.cplett.2015.10.035

Restricted until

2037-12-31