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

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

doi:10.1016/j.cplett.2015.10.035

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

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

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 ΔE_II,I = 10 cm^-1 and ΔE_III,I = 45 cm^-1 between three triplet sublevels, with intrinsic luminescence lifetimes of τ_I = 160 μs, τ_II = 10 μs and τ_III = 800 ns. We compare these with values for the green emitter, [Ir(ppy)₃] and discuss implications for the excited state geometries.

Original language	English
Pages (from-to)	62-67
Number of pages	6
Journal	Chemical Physics Letters
Volume	641
DOIs	https://doi.org/10.1016/j.cplett.2015.10.035
Publication status	Published - 16 Nov 2015

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@article{b68c340f01bd4eafaf4593e5f4283437,

title = "Analysis of the emitting states of an Ir(III) complex with strong blue emission",

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.",

author = "Liew, {Jane Y.} and Lo, {Shih Chun} and Burn, {Paul L.} and Krausz, {Elmars R.} and Hall, {Jeremy D.} and Moore, {Evan G.} and Riley, {Mark J.}",

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day = "16",

doi = "10.1016/j.cplett.2015.10.035",

language = "English",

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journal = "Chemical Physics Letters",

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T1 - Analysis of the emitting states of an Ir(III) complex with strong blue emission

AU - Liew, Jane Y.

AU - Lo, Shih Chun

AU - Burn, Paul L.

AU - Krausz, Elmars R.

AU - Hall, Jeremy D.

AU - Moore, Evan G.

AU - Riley, Mark J.

PY - 2015/11/16

Y1 - 2015/11/16

N2 - 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.

AB - 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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U2 - 10.1016/j.cplett.2015.10.035

DO - 10.1016/j.cplett.2015.10.035

M3 - Article

SN - 0009-2614

VL - 641

SP - 62

EP - 67

JO - Chemical Physics Letters

JF - Chemical Physics Letters

ER -

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

Abstract

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