The Front Cover shows a molecule that emits almost no fluorescence in the dilute solution but does emit blue light due to the overlap of two perfluorophenyl groups in crystalline states. It is expressed by making the castle glow blue by the overlapping of the two hands. We express gratitude to the workers who are devoted to medical care by illuminating the historic building. More information can be found in the Full Paper by K. Funabiki et al.

中文翻译：

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封面：全氟苯基-全氟苯基堆积-促进聚集-诱导结晶的5-芳氧基-3H-吲哚的发射增强（欧洲化学组织9/2021）

前盖显示了一个分子，该分子在稀溶液中几乎不发出荧光，但由于两个全氟苯基处于结晶状态而重叠，因此确实发出了蓝光。这是通过两只手的重叠使城堡发出蓝色的光表示的。我们通过照亮这座历史建筑向致力于医疗的工人表示感谢。可以在K. Funabiki等人的论文全文中找到更多信息。