The Front Cover shows the authors’ association of fluorescence anion sensing with pearl hunting – the activity of recovering pearls from wild molluscs. In the presented work, the group of Kataev has developed a new water‐soluble amido‐amine azacryptand bearing a fluorescence anthracene dicarboxamide fragment. With the help of the fluorescent receptors (a hand) one can catch the phosphate anion (a glowing pearl) and visualize this binding event. The recognition of phosphate and oxalate has led to a fluorescent enhancement in a selective manner; however, the anions have demonstrated different recognition modes. More information can be found in the Communication by Boris S. Mozorov et al. on page 171 in Issue 2, 2020 (DOI: 10.1002/open.201900309).

中文翻译：

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封面：基于蒽的酰胺-笼型受体，用于中性水条件下的阴离子识别（ChemistryOpen 2/2020）

封面显示了作者将荧光阴离子感测与捕猎珍珠相关联-从野生软体动物中回收珍珠的活性。在介绍的工作中，Kataev研究小组开发了一种新的水溶性氨基酰胺氮杂密码子，带有荧光蒽二羧酰胺片段。借助荧光受体（一只手），可以捕捉到磷酸根阴离子（发光的珍珠）并可视化这种结合事件。磷酸盐和草酸盐的识别导致荧光的选择性增强。然而，阴离子表现出不同的识别方式。可以在Boris S. Mozorov等人的来文中找到更多信息。就在第2期第171页2020（DOI：10.1002 / open.201900309）。