单晶到单晶转变促进的柔性金属有机框架中增强的质子传导性。
Enhanced proton conductivity in a flexible metal-organic framework promoted by single-crystal-to-single-crystal transformation.
作者信息
Chen Xi, Zhang Zhongyue, Chen Jin, Sapchenko Sergei, Han Xue, da-Silva Ivan, Li Ming, Vitorica-Yrezabal Inigo J, Whitehead George, Tang Chiu C, Awaga Kunio, Yang Sihai, Schröder Martin
机构信息
Department of Chemistry, University of Manchester, Manchester, M13 9PL, UK.
Department of Chemistry, Nagoya University, Furocho, Chikusa, 464-8602, Nagoya, Japan.
出版信息
Chem Commun (Camb). 2021 Jan 5;57(1):65-68. doi: 10.1039/d0cc05270a.
MFM-722(Pb)-DMA undergoes a single-crystal-to-single-crystal (SCSC) transformation to give MFM-722(Pb)-H2O via ligand substitution upon exposure to water vapour. In situ single crystal impedance spectroscopy reveals an increase in proton conductivity due to this structural transition, with MFM-722(Pb)-H2O showing a proton conductivity of 6.61 × 10-4 S cm-1 at 50 °C and 98% RH. The low activation energy (Ea = 0.21 eV) indicates that the proton conduction follows a Grotthuss mechanism.
MFM-722（Pb）-DMA在暴露于水蒸气时通过配体取代经历单晶到单晶（SCSC）转变，生成MFM-722（Pb）-H₂O。原位单晶阻抗谱表明，由于这种结构转变，质子传导率增加，MFM-722（Pb）-H₂O在50°C和98%相对湿度下的质子传导率为6.61×10⁻⁴ S cm⁻¹。低活化能（Ea = 0.21 eV）表明质子传导遵循Grotthuss机制。
Zotero 插件