Hydrogen-bonded organic frameworks in solution enables continuous and high-crystalline membranes.
Hydrogen-bonded organic frameworks in solution enables continuous and high-crystalline membranes.
复制标题
溶液中的氢键键合有机框架能够实现连续和高结晶膜。
DOI：
10.1038/s41467-024-44921-z
复制
发表时间：
2024-01-20
影响因子：
16.6
通讯作者：
Liu, Tian-Fu
中科院分区：
文献类型：
--
作者：
Yin, Qi;Pang, Kuan;Feng, Ya-Nan;Han, Lili;Morsali, Ali;Li, Xi-Ya;Liu, Tian-Fu
氢键有机骨架是一种新兴的多孔材料。目前，对其解态的研究很少。这项工作表明，hof在溶剂中分散时，碎片成小颗粒，同时保持其原始组装，这一点得到了低温电子显微镜和3D电子衍射技术的证实。一维和二维核磁共振（NMR）和zeta电位分析表明，基于hof的胶体溶液和分离的分子溶液在分子间相互作用和聚集行为上存在显著差异。这种独特的溶液工艺允许通过溶液铸造方法在各种衬底上制造具有高结晶度和孔隙度的各种连续HOF膜。其中HOF-BTB@AAO膜对C3H6具有较高的渗透率（1.979 × 10−7 mol·s−1·m−2·Pa−1），对C3H6和C3H8具有良好的分离性能（SF = 14）。这种连续膜分离技术是一种绿色、低成本、高效的分离技术，在石油裂解和净化中具有潜在的应用前景。氢键有机骨架作为多孔材料越来越受到人们的关注。尽管固体性质被广泛研究，但对溶液状态的研究却很少。在这里，作者证明，HOFs碎片成小颗粒，同时保持其原来的组装分散在溶剂中。
Hydrogen-Bonded organic frameworks (HOFs) are a type of emerging porous materials. At present, little research has been conducted on their solution state. This work demonstrates that HOFs fragment into small particles while maintaining their original assemblies upon dispersing in solvents, as confirmed by Cryo-electron microscopy coupled with 3D electron diffraction technology. 1D and 2D-Nuclear Magnetic Resonance (NMR) and zeta potential analyses indicate the HOF-based colloid solution and the isolated molecular solution have significant differences in intermolecular interactions and aggregation behavior. Such unique solution processibility allows for fabricating diverse continuous HOF membranes with high crystallinity and porosity through solution-casting approach on various substrates. Among them, HOF-BTB@AAO membranes show high C3H6 permeance (1.979 × 10−7 mol·s−1·m−2·Pa−1) and excellent separation performance toward C3H6 and C3H8 (SF = 14). This continuous membrane presents a green, low-cost, and efficient separation technology with potential applications in petroleum cracking and purification. Hydrogen-bonded organic frameworks (HOFs) attract increasing attention as porous materials. Despite the widely studied solid-state properties, little research has been done on the solution state. Here, the authors demonstrate that HOFs fragment into small particles while maintaining their original assemblies upon dispersing in solvents.
登录
查看更多内容
影响因子：
4.4
作者：
KAPLAN, J
通讯作者：
KAPLAN, J
用于协同化学光动力疗法的超鲁棒且结晶可赎回的氢键有机框架
影响因子：
16.6
作者：
Yin, Qi;Zhao, Peng;Cao, Rong
通讯作者：
Cao, Rong
影响因子：
29.4
作者：
Ying, Yunpan;Peh, Shing Bo;Zhao, Dan
通讯作者：
Zhao, Dan
一种简单且低成本的将手性分子嵌入金属有机框架中进行对映分离的方法
影响因子：
4.9
作者：
Hu, Xiao-Jing;Huang, Ge;Cao, Rong
通讯作者：
Cao, Rong
影响因子：
41.2
作者：
Koros, William J.;Zhang, Chen
通讯作者：
Zhang, Chen