摘要
Novel calix[4]arene-based anion receptors 1-3 with bis-squaramide moieties were designed and synthesized. Their sensing properties with various anions were investigated by UV-vis, ESI-MS, and 1H NMR spectra. The experimental results revealed that there were two types of interaction modes where receptor 1 bound biologically important H2PO4-, F -, and AcO- ions selectively over other anions in the hydrogen bonding interaction mode, while receptors 2 and 3 displayed deprotonation behavior with basic anions (F-, AcO-, and H2PO4-) via acid-base interaction mode. Receptors 2 and 3 were proved to be efficient 'naked-eye' sensors for F - and AcO- with marked color changes.
源语言 | 英语 |
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页(从-至) | 796-801 |
页数 | 6 |
期刊 | Tetrahedron Letters |
卷 | 54 |
期 | 8 |
DOI | |
出版状态 | 已出版 - 20 2月 2013 |