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

Rodrigue-Witchel, Alexandre and Rochester, David L. and Zhao, Shu-Bin and Lavelle, Kevin B. and Williams, J.A. Gareth and Wang, Suning and Connick, William B. and Reber, Christian (2016) 'Pressure-induced variations of MLCT and ligand-centered luminescence spectra in square-planar platinum(II) complexes.', Polyhedron., 108 . pp. 151-155.

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.

Item Type:Article
Full text:(AM) Accepted Manuscript
Available under License - Creative Commons Attribution Non-commercial No Derivatives.
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Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1016/j.poly.2015.12.011
Publisher statement:© 2016 This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Date accepted:09 December 2015
Date deposited:29 May 2018
Date of first online publication:11 January 2016
Date first made open access:29 May 2018

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