Chloride Binding Modulated by Anion Receptors Bearing Tetrazine and Urea
Abstract
Modulation and fine-tuning of the strength of weak interactions to bind anions are described in a series of synthetic receptors. The general design of the receptors includes both a urea motif and a tetrazine motif. The synthetic sequence towards three receptors is detailed. Impacts of H-bond strength and linker length between urea and tetrazine on chloride complexation are studied. Binding properties of the chloride anion are examined in both the ground and excited states using a panel of analytical methods (NMR spectroscopy, mass spectrometry, UV/Visible spectroscopies, and fluorescence). A ranking of the receptors by complexation strength has been determined, allowing a better understanding of the structure-properties relationship on these compounds.
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Plais et al. ChemPhysChem 2022 e202200524.pdf (1.38 Mo)
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cphc202200524-s1-supporting_information.pdf (12.4 Mo)
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