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Published on: May 29, 2018
Reversible mechanochromic luminescence of [(C6F5Au)2(mu-1,4-diisocyanobenzene)]
Hajime Ito1, Tomohisa Saito, Naoya Oshima
1Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan. hajito@sci.hokudai.ac.jp
Abstract:
Reversible mechanochromic luminescence of [(C6F5Au)2(mu-1,4-diisocyanobenzene)] is reported. Grinding of the complex induced a photoluminescent color change, which was restored by exposure to a solvent. This cycle was repeated 20 times with no color degradation in the emissions. Their optical properties, X-ray crystallographic analysis, IR, and XRD measurements strongly suggested that the change in the molecular arrangement is responsible for this mechanochromic property. Intermolecular aurophilic bondings presumably play a key role in the altered emission.
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