Excited-state properties of a triply ortho-metalated iridium(III) complex

King, K. A.; Spellane, Peter; Watts, Richard J.

doi:10.1021/ja00291a064

Cited by 635 publications

(570 citation statements)

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“…Because of thermally restricted relaxation, the lifetime of this heavy metal complex significantly increases from 0.9 to 3 s when measured at 77 K compared to room temperature. This, however, only leads to minor spectral changes; especially the apparent width of the spectrum is unaltered [13]. Indeed, at 77 K we observe the turnover into algebraic decay more than 3 times later compared to room temperature, i.e., the ratio of turnover = remains nearly constant.…”

Section: Prl 96 163601 (2006) P H Y S I C a L R E V I E W L E T T E mentioning

confidence: 77%

“…Torsional fluctuations of these side groups around the spirolinkage introduce a third variable, besides the solvent and the normal conjugation length distribution that all contribute to the increase of ÿ. The excited state in Ir ppy 3 is a metal-to-ligand charge transfer state, which is again strongly affected by the solvent, leading to a lifetime-to-turnover ratio of 13.2 [13]. Because of thermally restricted relaxation, the lifetime of this heavy metal complex significantly increases from 0.9 to 3 s when measured at 77 K compared to room temperature.…”

Section: Prl 96 163601 (2006) P H Y S I C a L R E V I E W L E T T E mentioning

confidence: 99%

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Violation of the Exponential-Decay Law at Long Times

2006

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The full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-pro t purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. First-principles quantum mechanical calculations show that the exponential-decay law for any metastable state is only an approximation and predict an asymptotically algebraic contribution to the decay for sufficiently long times. In this Letter, we measure the luminescence decays of many dissolved organic materials after pulsed laser excitation over more than 20 lifetimes and obtain the first experimental proof of the turnover into the nonexponential decay regime. As theoretically expected, the strength of the nonexponential contributions scales with the energetic width of the excited state density distribution whereas the slope indicates the broadening mechanism.

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Section: Prl 96 163601 (2006) P H Y S I C a L R E V I E W L E T T E mentioning

confidence: 77%

Section: Prl 96 163601 (2006) P H Y S I C a L R E V I E W L E T T E mentioning

confidence: 99%

Violation of the Exponential-Decay Law at Long Times

2006

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“…This shows that the methyl groups on the dmppy rings have a significant effect on the electronic transitions energies. The emission spectra of all complexes show the phosphorescent emission between 509 nm and 534 nm in solution and thin films at room temperature (Ichimura et al 1987;King et al 1985). The absorption and emission data of all the Ir(dmppy) 3 derivatives in CH 2 Cl 2 solution are shown in Table. 1.…”

Section: Structural Electrochemical Photophysical Propertiesmentioning

confidence: 99%

The Efficient Green Emitting Iridium(III) Complexes and Phosphorescent Organic Light Emitting Diode Characteristics

Kwon¹,

Thangaraju²,

Kim³

et al. 2010

Organic Light Emitting Diode

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“…Synthetic procedures for preparation of (I) and (II) have been described in prior publications (Sprouse, King, Spellane & Watts, 1984;King, Spellane & Watts, 1985;Garces, King & Watts, 1988;Dedeian, Djurovich, Garces, Carlson & Watts, 1991). Complex (I): crystals were obtained by vapor exchange of a dichloromethane solution with toluene/hexane (2:1).…”

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confidence: 99%

Structures of ortho-metalated [2-(p-tolyl)pyridine]iridium(III) complexes

Garces¹,

Dedeian²,

Keder³

et al. 1993

Acta Crystallogr C

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Abstract.Di-/x-chloro-tetrakis [2-(p-tolyl-rC2) Or-bonded ortho-metalated complexes, the dichlorobridged dimer, [Ir(ptpy)2C1]2 (I), and the facial-tris mononuclear complex, Ir(ptpy)3 (II), where ptpy is the deprotonated 2-(p-tolyl)pyridine, C iEHio N. Complex (I) has crystallographic twofold symmetry (CI atoms on the twofold axis) and (II) has crystallographic threefold symmetry (Ir atom on the threefold axis). These molecules have been synthesized and studied for their utilization in outer-sphere electrontransfer processes.

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Excited-state properties of a triply ortho-metalated iridium(III) complex

Cited by 635 publications

References 1 publication

Violation of the Exponential-Decay Law at Long Times

Violation of the Exponential-Decay Law at Long Times

The Efficient Green Emitting Iridium(III) Complexes and Phosphorescent Organic Light Emitting Diode Characteristics

Structures of ortho-metalated [2-(p-tolyl)pyridine]iridium(III) complexes

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