Selective Detection of Dihydrogen Phosphate Anion by Fluorescence Change with Tetraamide-Based Receptors Bearing Isoquinolyl and Quinolyl Moieties

[摘要]：Novel fluororeceptors 2 and 3 based on tetraamide bearing 1-isoquinolyl and 2-quinolyl moieties were designed and synthesized. Highly selective and significant changes In the UV-vis and fluorescence spectra of the receptors upon the addition of H2PO4- were found. In particular, receptor 3 bearing 2-quinolyl groups shows selective and nearly perfect quenching by H2PO4-, whereas 3 shows small or no fluorescence changes by another anion.

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