Crystallization of molecular layers produced under confinement onto a surface
Crystallization of molecular layers produced under confinement onto a surface
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DOI：
10.1038/s41467-024-45900-0
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发表时间：
2024-03-05
影响因子：
16.6
通讯作者：
Casiraghi，Cinzia
中科院分区：
文献类型：
--
作者：
Tong，Jincheng;de Bruyn，Nathan;Casiraghi，Cinzia
众所周知，分子被限制在非常接近表面的位置，排列成分子层。由于固-液界面在化学、生物和物理科学中无处不在，因此开发容易接近分子层并通过产生分子层状晶体来利用其独特性质的方法至关重要。在这里，我们报告了一种基于通过吹气实现的超薄水坑中的结晶的方法，该方法允许在表面上产生厚度低至单层的分子层状晶体，使其可直接用于表征和进一步加工。通过选择具有不同类型的多晶型物的四种分子，我们观察到具有货车范德华层间相互作用的多晶型物的排他性结晶，这用传统的限制方法没有观察到。总之，吹气方法揭示了在限制下在表面上进行材料化学的机会，从而能够形成具有选定多晶型的不同晶体。
It is well known that molecules confined very close to a surface arrange into molecular layers. Because solid-liquid interfaces are ubiquitous in the chemical, biological and physical sciences, it is crucial to develop methods to easily access molecular layers and exploit their distinct properties by producing molecular layered crystals. Here we report a method based on crystallization in ultra-thin puddles enabled by gas blowing, which allows to produce molecular layered crystals with thickness down to the monolayer onto a surface, making them directly accessible for characterization and further processing. By selecting four molecules with different types of polymorphs, we observed exclusive crystallization of polymorphs with Van der Waals interlayer interactions, which have not been observed with traditional confinement methods. In conclusion, the gas blowing approach unveils the opportunity to perform materials chemistry under confinement onto a surface, enabling the formation of distinct crystals with selected polymorphism.