材料科学
腐蚀
渗透
聚合物
猝灭(荧光)
复合材料
气体扩散
玻璃化转变
化学工程
多孔玻璃
极化(电化学)
多孔性
膜
燃料电池
化学
光学
物理化学
工程类
生物化学
物理
荧光
作者
Taotao Ji,Yan-Kui Song,Jiahui Yan,Yanwei Sun,Chen Wang,Sixing Chen,Yi Liu
标识
DOI:10.1021/acs.chemmater.2c01536
摘要
The crystal–liquid–glass phase-transition behavior of coordination polymers (CPs) endows them with unique processing and mechanical properties to prepare functional CP glass films. However, their potential applications are still waiting to be explored. In this study, flawless [Zn(HPO4)(H2PO4)2](H2Im)2 (abbreviated as ZnP-H2Im) glass films are facilely prepared through rapid hot casting coupled with melt quenching. Relying on the grain-boundary-free structure of the film and nonporous structure of the coordination network, undesired diffusion of guest molecules in ZnP-H2Im glass films can be effectively prohibited, which is advantageous for gas permeation and liquid leakage prevention. Gas permeation test results indicate that the barrier efficiency of the ZnP-H2Im glass film to gas molecules reaches 100%, while polarization curve and EIS results imply that prepared ZnP-H2Im glass film possesses excellent corrosion resistance in salt aqueous solution with a protection efficiency up to 99.98% for metallic substrate. Our research demonstrates that CP glasses hold great potential to serve as competent gas barrier layers and corrosion-resistant coatings.
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