新型配位聚合物玻璃的合成及质子传导研究

新型配位聚合物玻璃因其结构可控与柔性是高性能质子导体的研究重点。但是配位聚合物玻璃的构筑机理尚不明，我们在前期的研究中发现配位聚合物玻璃仍然保持晶态的配位结构环境，其制备中不同结构、官能团的作用有待明确；同时，配位聚合物玻璃的形成规律与离子迁移率的关系也需深入研究。我们近期的研究表明球磨法可以制备热不稳定的配位聚合物玻璃，并且中心金属离子的选择对配位聚合物玻璃的形成有一定影响。基于此，本项目拟通过选择多种有机桥联配体、酸性基团及中心金属离子来构筑配位聚合物，通过熔融或球磨方法实现配位聚合物的玻璃化，并增强其离子导电性能，通过研究玻璃化对离子导电率的影响，深入理解配体、基团及金属离子在玻璃化构筑及质子迁移上的影响。本项目为制备高效配位聚合物玻璃质子导体提供了新途径，并期望为推动新型配位聚合物玻璃器件化研发提供基础。

High-efficiency proton conductors can be of great significance in many fields. It was quite recently that the Coordination Polymer (CP) glasses with structural controllability and flexibility came to attention in the field of proton conductors. We previously found that the CP glasses keep the coordination environments compared to their crystalline counterpart but the formation mechanism related to different functional group and dimensionality remains unclear. Moreover, the factors of construction processes of CP glasses on the proton migration remain to be answered. We discovered recently that CP glasses can be synthesized by ball-mill and its formation could be affected by metal ion centers. The CP glasses exhibit substantially enhanced mechanical properties compared to their crystalline counterparts. We propose to further our understanding of the mobility of proton carriers in CP glasses. In this project, various kinds of organic ligand, proton carriers and metal ions are chosen for to constructing CPs with different dimensionality. We plan to use the mechanically milling and/or melt quenching for the formation of CP glasses from its crystalline state for an enhanced conductivity. With the study of CP glass, we could elucidate the mechanism for ion hopping pathway. The design of CP glasses, with a view to expanding and improving the functionalities of the materials, is an emerging area of research. The creation of a glassy state CP with conductivity may produce materials with unprecedented properties for use in the areas of renewable energy.