Glass Formation of a Coordination Polymer Crystal for Enhanced Proton Conductivity and Material Flexibility
Glass Formation of a Coordination Polymer Crystal for Enhanced Proton Conductivity and Material Flexibility
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DOI：
10.1002/anie.201600123
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发表时间：
2016-04-18
影响因子：
16.6
通讯作者：
Kitagawa, Susumu
中科院分区：
文献类型：
--
作者：
Chen, Wenqian;Horike, Satoshi;Kitagawa, Susumu
采用无溶剂机械铣削法制备了二维（2D） Cd2+配位聚合物晶体的玻璃态。玻璃态保留了晶体材料的二维结构，尽管有明显的畸变，如同步加速器x射线分析和固态多核磁共振波谱所表征的那样。它受热后又恢复原来的晶体结构。因此，使用我们的新工艺，可逆的晶体到玻璃的转变是可能的。与晶态相比，玻璃态显示出优越的性能；具体来说，它显示了无水质子电导率和介电常数比晶体材料大两个数量级。它还显示了材料的灵活性和透明度。
The glassy state of a two-dimensional (2D) Cd2+ coordination polymer crystal was prepared by a solvent-free mechanical milling process. The glassy state retains the 2D structure of the crystalline material, albeit with significant distortion, as characterized by synchrotron X-ray analyses and solid-state multinuclear NMR spectroscopy. It transforms to its original crystal structure upon heating. Thus, reversible crystal-to-glass transformation is possible using our new processes. The glass state displays superior properties compared to the crystalline state; specifically, it shows anhydrous proton conductivity and a dielectric constant two orders of magnitude greater than the crystalline material. It also shows material flexibility and transparency.