Abstract
AbstractThe mobility, thermal behaviour, and crystal structures of water molecules confined within a one‐dimensional (1‐D), nanoporous single crystal in the premelting state were investigated in this study. Water clusters confined within the hydrophilic crystal revealed a premelting phase that was intermediate between the frozen and melted states. Water molecules in the premelting phase moved slowly. Heat capacity measurements showed that this motion could continue for approximately 24 hours after annealing at 160 K, although this could not be confirmed with solid‐state 2H‐NMR analysis. X‐ray diffraction analysis established the coexistence of crystal structures in the frozen and premelting states at 165 K. These results represent a valuable contribution to understanding the dynamic properties of water confined within nanoscale spaces.
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