Ben Ishai Paul, Kidder Michelle K, Kolesnikov Alexander I, Anovitz Lawrence M
Department of Physics, Ariel University, 40700 Ariel, Israel.
Energy and Transportation Science Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States.
J Phys Chem Lett. 2020 Sep 17;11(18):7798-7804. doi: 10.1021/acs.jpclett.0c02026. Epub 2020 Sep 3.
Water is renowned for its anomalous behaviors, which can be linked to a distributed H-bond network in bulk water. Ultraconfinement of the water molecule can remove H-bonding, leaving only molecular water. In natural cordierite crystals, water is trapped in an orthorhombic channel with an average diameter of 5.7 Å, running through the center of the unit cell parallel to the -axis. Calorimetric measurements reveal the existence of a one-dimensional (1D) glass linked to this water. In these channels, water molecules in truncated, sparse 1D strings interact only via dipole-dipole correlations. A physical 1D glass is formed from these strings. This unusual state can be explained by a modified Ising model. This model predicts a dependence of the glass transition temperature, , on the size of these domains. This is confirmed experimentally.
水因其异常行为而闻名，这可能与大量水中的分布式氢键网络有关。水分子的超禁闭可以消除氢键，只留下分子水。在天然堇青石晶体中，水被困在一个平均直径为5.7 Å的正交通道中，该通道贯穿晶胞中心并平行于z轴。量热测量揭示了与这种水相关的一维（1D）玻璃态的存在。在这些通道中，截断的、稀疏的一维链中的水分子仅通过偶极-偶极相关性相互作用。由这些链形成了物理一维玻璃。这种不寻常的状态可以用修正的伊辛模型来解释。该模型预测玻璃化转变温度Tg与这些畴的大小有关。这已通过实验得到证实。
