ArticleNature communications2026
Formation of excess dangling OH bonds during crystallization of amorphous solid water.
Article in Nature communications, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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10 authors.
Funding
Abstract
Dangling OH bonds on ice surfaces are thought to play a central role in surface reactions relevant to planetary, interstellar, and prebiotic environments, yet their direct characterization is hindered by the intrinsic fragility of surface hydrogen-bonding networks, particularly under phase transition conditions. Here, using time-resolved in situ infrared reflection-absorption spectroscopy, we track the evolution of dangling OH bonds during the isothermal crystallization of amorphous solid water into ice I. We observe a transient excess of dangling OH bonds that gradually diminishes as the surface hydrogen-bonding networks reorganize, reflecting competition between nucleation-driven crystallization and surface stabilization. These findings provide direct spectroscopic evidence for a metastable surface state formed during amorphous solid water crystallization and uncover a surface-restructuring pathway that may influence the reactivity of icy surfaces.
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