Packing for two: A ferrocene-dicarboxylic acid derivative of tryptophan–tryptophan was synthesized and shown to assemble into a supramolecular gel (see figure). The intermolecular hydrogen bonding revealed by X-ray crystallography provides insight into the packing and the molecular interactions responsible for the formation of a nanofibril network structure (see figure).

中文翻译：

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二茂铁-色氨酸缀合物：吲哚氮在超分子组装中的作用

两个包装：合成了色氨酸-色氨酸的二茂铁-二羧酸衍生物，显示其组装成超分子凝胶（见图）。X射线晶体学揭示的分子间氢键提供了有关堆积和负责形成纳米原纤网络结构的分子相互作用的见解（见图）。