A new amido−amine cage receptor, which combines 1,8‐anthracene diacarboxamide subunit and a polyammonium azamacrocycle, is reported. Bearing both the hydrogen bond donor and the acceptor binding sites, the receptor is able to bind phosphate selectively under neutral (pH 7.2) aqueous conditions. The recognition events for phosphate and dicarboxylates are accomplished by a fluorescence enhancement in the anthracene emission. As revealed by experimental and theoretical studies, phosphate and oxalate show different recognition modes. Phosphate demonstrates hydrogen bond acceptor properties, while the coordination of oxalate favours the protonation of the receptor.

中文翻译：

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在中性水条件下，基于蒽的阴离子识别用酰胺基胺笼式受体。

报道了一种新的酰胺基胺笼型受体，该受体结合了1,8-蒽二羧酰胺亚基和一个聚氮杂大环胺。带有氢键供体和受体结合位点的受体能够在中性（pH 7.2）水溶液条件下选择性结合磷酸盐。磷酸盐和二羧酸盐的识别事件是通过蒽发射中的荧光增强来实现的。实验和理论研究表明，磷酸盐和草酸盐显示出不同的识别模式。磷酸盐显示出氢键受体的特性，而草酸盐的配位有利于受体的质子化。