Synthesis of {AlMo 14 O 44 }-Based Supramolecular Structures with High Proton Conductivity

作者：Weibo Ren, Bo Li, Yunzuo Cui, Xinyu Chen, Qianqian Liu, Yongzhen Chen, Zhen Chen, Yuyang Wang, Hong‐Ying Zang · 发表于：Inorganic Chemistry · 年份：2024 · DOI：10.1021/acs.inorgchem.4c01535 · 被引用次数：12 · 研究领域：Polyoxometalates: Synthesis and Applications、Metal-Organic Frameworks: Synthesis and Applications、Advancements in Battery Materials

Polyoxometalates (POMs) are esteemed for their remarkable stability and exceptionally high proton conductivity, rendering them ripe for extensive exploration owing to their research significance. Herein, we synthesized two bimolybdenum-capped {AlMo VI 8 Mo V 6 O 44 } cluster-based coordination polymers through a solvothermal method. Single-crystal X-ray diffraction analysis elucidates that H[(H 2 bimb) 3 (AlMo VI 8 Mo V 6 O 44 )] [bimb = 1,4-bis(imidazole-1-ylmethyl)benzene, compound 1 ] is the POMs-organic supramolecular structure. The introduction of zinc ions into the reaction environment facilitated the connection of initially dispersed ligands, which yielded the well-ordered structure H 3 [Zn 2 (bimb) 4 (AlMo VI 8 Mo V 6 O 44 )]·4H 2 O (compound 2 ) with a layer distance of 11.8 Å. The proton conductivities (σ) of two compounds were measured under conditions of 85 °C and 98% relative humidity (RH), resulting in values of 3.89 × 10 –2 and 4.76 × 10 –2 S·cm –1, respectively. This study presents a novel approach to fabricating POMs as proton conductors through structural design and manufacturing adjustments.