Crystallization of molecular layers produced under confinement onto a surface

Jincheng Tong (), Nathan Bruyn, Adriana Alieva, Elizabeth. J. Legge, Matthew Boyes, Xiuju Song, Alvin J. Walisinghe, Andrew J. Pollard, Michael W. Anderson, Thomas Vetter, Manuel Melle-Franco and Cinzia Casiraghi ()
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Jincheng Tong: University of Manchester
Nathan Bruyn: University of Manchester
Adriana Alieva: University of Manchester
Elizabeth. J. Legge: National Physical Laboratory
Matthew Boyes: University of Manchester
Xiuju Song: University of Manchester
Alvin J. Walisinghe: Curtin Institute for Computation, School for Molecular and Life Sciences, Curtin University
Andrew J. Pollard: National Physical Laboratory
Michael W. Anderson: University of Manchester
Thomas Vetter: University of Manchester
Manuel Melle-Franco: University of Aveiro
Cinzia Casiraghi: University of Manchester

Nature Communications, 2024, vol. 15, issue 1, 1-8

Abstract: Abstract 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.

Date: 2024
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DOI: 10.1038/s41467-024-45900-0

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