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. ISSN 0277-5387

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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:
Journal Article
Journal or Publication Title:
Polyhedron
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2500/2505
Subjects:
ID Code:
134537
Deposited By:
Deposited On:
22 Jun 2019 09:11
Refereed?:
Yes
Published?:
Published
Last Modified:
08 Jul 2020 08:32