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Pressure Control of Cuprophilic Interactions in a Luminescent Mechanochromic Copper Cluster
Quentin Benito1, Benoit Baptiste2, Alain Polian2
1Laboratoire de Physique de la Matière Condensée (PMC), CNRS, Ecole Polytechnique , 91128 Palaiseau Cedex, France.
Abstract:
For the development of applications based on mechanochromic luminescent materials, a comprehensive study of the mechanism responsible for the emission changes is required. We report the study of a mechanochromic copper iodide cluster under hydrostatic pressure, which allows control of crystal packing via modification of the intermolecular interactions. In situ single-crystal powder X-ray diffraction analysis and emission measurements under pressure permit one to establish a direct correlation between the molecular structure and luminescence properties and, in particular, to demonstrate that cuprophilic interactions are responsible for the stimuli-responsive luminescence properties of such multinuclear coordination compounds.
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