Iridium metal complexes as an unambiguous probe of intramolecular vibrational redistribution

Hedley, G. J. , Ruseckas, A., Liu, Z., Lo, S.-C., Burn, P. L. and Samuel, I. D.W. (2008) Iridium metal complexes as an unambiguous probe of intramolecular vibrational redistribution. Journal of the American Chemical Society, 130(36), pp. 11842-11843. (doi: 10.1021/ja8036383) (PMID:18700759)

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Abstract

Ultrafast luminescence spectroscopy has been undertaken on three iridium cored phosphorescent complexes, with the Ir(ppy)3 molecule being compared with two Ir(ppy)3 cored dendrimers. Energy dissipation by intramolecular vibrational redistribution (IVR) and cooling shows as a luminescence decay because it decreases the admixture of singlet character to the emitting triplet state. A larger amount of vibrational energy dissipates by IVR in dendrimer complexes. We have therefore found a methodology of obtaining unambiguous information on the IVR process and show its potential to study IVR rates as a function of vibrational energy.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Hedley, Dr Gordon
Authors: Hedley, G. J., Ruseckas, A., Liu, Z., Lo, S.-C., Burn, P. L., and Samuel, I. D.W.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Journal of the American Chemical Society
Publisher:American Chemical Society
ISSN:0002-7863
ISSN (Online):1520-5126
Published Online:14 August 2008

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