Preparation and Luminescence Thermochromism of Tetranuclear Copper(I)–Pyridine–Iodide Clusters
-
Fabio Parmeggiani [1] ; Alessandro Sacchetti [1]
-
[1] Polytechnic University of Milan
Polytechnic University of Milan
Milán, Italia
-
- Localización: Journal of chemical education, ISSN 0021-9584, Vol. 89, Nº 7, 2012, págs. 946-949
- Idioma: inglés
- Texto completo no disponible (Saber más ...)
-
Resumen
A simple and straightforward synthesis of a tetranuclear copper(I)–pyridine–iodide cluster is described as a laboratory experiment for advanced inorganic chemistry undergraduate students. The product is used to demonstrate the fascinating and visually impressive phenomenon of luminescence thermochromism: exposed to long-wave UV light, the crystalline solid shows a bright yellow fluorescence at room temperature and an equally intense blue-violet fluorescence when cooled in liquid nitrogen. The procedure was also extended to several other pyridine ligands to allow students to synthesize different clusters and compare their photophysical behavior.
