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Pressure-induced variations of MLCT and ligand-centered luminescence spectra in square-planar platinum(II) complexes

Rodrigue-Witchel, Alexandre; Rochester, David L.; Zhao, Shu-Bin; Lavelle, Kevin B.; Williams, J.A. Gareth; Wang, Suning; Connick, William B.; Reber, Christian

Pressure-induced variations of MLCT and ligand-centered luminescence spectra in square-planar platinum(II) complexes Thumbnail


Authors

Alexandre Rodrigue-Witchel

David L. Rochester

Shu-Bin Zhao

Kevin B. Lavelle

Suning Wang

William B. Connick

Christian Reber



Abstract

Solid-state luminescence spectra of five crystalline platinum(II) complexes at variable pressure and temperature are presented and compared. Maxima occur between 14 000 cm−1 and 15 600 cm−1 (approximately 700–640 nm) at ambient temperature and pressure. Spectra can be broad bands, characteristic of MLCT transitions, or vibronically structured, characteristic of intraligand transitions. Both pressure and temperature variations can lead to distinctive changes in the luminescence spectra that differ between these two types of transitions. MLCT band maxima show shifts on the order of −20 cm−1/kbar to lower energy; in contrast, ligand-centered luminescence bands do not show significant shifts between ambient pressure and 40 kbar.

Citation

Rodrigue-Witchel, A., Rochester, D. L., Zhao, S., Lavelle, K. B., Williams, J. G., Wang, S., …Reber, C. (2016). Pressure-induced variations of MLCT and ligand-centered luminescence spectra in square-planar platinum(II) complexes. Polyhedron, 108, 151-155. https://doi.org/10.1016/j.poly.2015.12.011

Journal Article Type Article
Acceptance Date Dec 9, 2015
Online Publication Date Jan 11, 2016
Publication Date Mar 29, 2016
Deposit Date May 30, 2017
Publicly Available Date May 29, 2018
Journal Polyhedron
Print ISSN 0277-5387
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 108
Pages 151-155
DOI https://doi.org/10.1016/j.poly.2015.12.011

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