Transformation of metastable supramolecular stacks of hydrogen-bonded rosettes composed of an ester-containing barbiturated naphthalene into crystalline nanosheets occurs through the rearrangement of hydrogen-bonding patterns. The involvement of the ester group in the crystalline hydrogen-bonded pattern is demonstrated, guiding us to a new molecular design that can afford supramolecular polymorphs with soft and hard molecular packing.

中文翻译：

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氢键导向的超分子多态性导致软分子和硬分子有序

氢键玫瑰花结的亚稳态超分子堆栈由含酯的巴比妥化萘组成，转变为晶体纳米片，这是通过氢键图形的重排而发生的。证明了酯基在氢键结晶模式中的参与，指导我们进行新的分子设计，该设计可提供具有软和硬分子堆积的超分子多晶型物。