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Heterogeneous Removal of Water-Soluble Ruthenium Olefin Metathesis Catalyst from Aqueous Media Via Host-Guest Interaction
Published on: August 23, 2018
Blurring the Lines between Host and Guest: A Chimeric Receptor Derived from Cucurbituril and Triptycene
Xiaoyong Lu1, Soumen K Samanta1, Peter Y Zavalij1
1Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA.
Abstract:
We report the synthesis and X-ray crystal structure of a cucurbituril-triptycene chimeric receptor (1). Host 1 binds to guests typical of CB[6]-CB[8], but also binds to larger guests such as blue box (20) and the Fujita square (22). Intriguingly, the geometries of the 1⋅20 and 1⋅22 complexes blur the lines between host and guest in that both components fulfill both roles within each complex. The fluorescence output of 1 is fully quenched by the formation of complexes with pyridinium-derived guests.
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