1. Synthesis and photoluminescence of three bismuth(III)-organic compounds bearing heterocyclic N-donor ligands.
- Author
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Adcock, Alyssa K., Ayscue, R. Lee, Breuer, Leticia M., Verwiel, Chloe P., Marwitz, Alexander C., Bertke, Jeffery A., Vallet, Valérie, Réal, Florent, and Knope, Karah E.
- Subjects
BISMUTH ,PHOTOLUMINESCENCE ,X-ray powder diffraction ,HETEROCYCLIC compounds ,BISMUTH compounds ,HETEROCYCLIC chemistry - Abstract
Three bismuth(III)-organic compounds, [Bi
4 Cl8 (PDC)2 (phen)4 ]·2MeCN (1), [BiCl3 (phen)2 ] (2), and [Bi2 Cl6 (terpy)2 ] (3), were prepared from solvothermal reactions of bismuth chloride, 2,6-pyridinedicarboxylic acid (H2 PDC), and 1,10-phenanthroline (phen) or 2,2′;6′,2′′-terpyridine (terpy). The structures were determined through single crystal X-ray diffraction and the compounds were further characterized via powder X-ray diffraction, Raman and infrared spectroscopy, and thermogravimetric analysis. The photoluminescence properties of the solid-state materials were assessed using steady state and time-dependent techniques to obtain excitation and emission profiles as well as lifetimes. The compounds exhibit visible emission ranging from the yellow-green to orange region upon UV excitation. Theoretical quantum mechanical calculations aimed at elucidating the observed emissive behavior show that the transitions can be assigned as predominantly ligand-to-ligand and ligand-to-metal charge transfer transitions. The solid-state structural chemistry, spectroscopic properties, and luminescence behavior of the bismuth compounds are presented herein. [ABSTRACT FROM AUTHOR]- Published
- 2020
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