Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1126/science.aal2456 |
Defibrillation of soft porous metal-organic frameworks with electric fields | |
Knebel, A.1; Geppert, B.1; Volgmann, K.1; Kolokolov, D. I.2,3; Stepanov, A. G.2,3; Twiefel, J.4; Heitjans, P.1; Volkmer, D.5; Caro, J.1 | |
2017-10-20 | |
发表期刊 | SCIENCE |
ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2017 |
卷号 | 358期号:6361页码:347-351 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; Russia |
英文摘要 | Gas transport through metal-organic framework membranes (MOFs) was switched in situ by applying an external electric field (E-field). The switching of gas permeation upon E-field polarization could be explained by the structural transformation of the zeolitic imidazolate framework ZIF-8 into polymorphs with more rigid lattices. Permeation measurements under a direct-current E-field poling of 500 volts per millimeter showed reversibly controlled switching of the ZIF-8 into polar polymorphs, which was confirmed by x-ray diffraction and ab initio calculations. The stiffening of the lattice causes a reduction in gas transport through the membrane and sharpens the molecular sieving capability. Dielectric spectroscopy, polarization, and deuterium nuclear magnetic resonance studies revealed low-frequency resonances of ZIF-8 that we attribute to lattice flexibility and linker movement. Upon E-field polarization, we observed a defibrillation of the different lattice motions. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000413251000038 |
WOS关键词 | MIXED MATRIX MEMBRANES ; ZIF-8 ; FLEXIBILITY ; SELECTIVITY ; CRYSTALS ; MOBILITY ; LINKERS ; RING |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/197158 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Leibniz Univ Hannover, Inst Phys Chem & Electrochem, D-30167 Hannover, Germany; 2.Russian Acad Sci, Boreskov Inst Catalysis, Siberian Branch, Novosibirsk 630090, Russia; 3.Novosibirsk State Univ, Novosibirsk 630090, Russia; 4.Leibniz Univ Hannover, Inst Dynam & Vibrat Res, D-30167 Hannover, Germany; 5.Augsburg Univ, Inst Phys, Chair Solid State & Mat Chem, D-86135 Augsburg, Germany |
推荐引用方式 GB/T 7714 | Knebel, A.,Geppert, B.,Volgmann, K.,et al. Defibrillation of soft porous metal-organic frameworks with electric fields[J]. SCIENCE,2017,358(6361):347-351. |
APA | Knebel, A..,Geppert, B..,Volgmann, K..,Kolokolov, D. I..,Stepanov, A. G..,...&Caro, J..(2017).Defibrillation of soft porous metal-organic frameworks with electric fields.SCIENCE,358(6361),347-351. |
MLA | Knebel, A.,et al."Defibrillation of soft porous metal-organic frameworks with electric fields".SCIENCE 358.6361(2017):347-351. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论