Reticular chemistry for the rational design of mechanically robust mesoporous merged-net metal-organic frameworks

被引：33

作者：

Jiang, Hao ^{[1
]}

Moosavi, Seyed Mohamad ^{[2
]}

Czaban-Jozwiak, Justyna ^{[1
]}

Torre, Bruno ^{[3
,4
,5
]}

Shkurenko, Aleksander ^{[1
]}

Ameur, Zied Ouled ^{[1
]}

Jia, Jiangtao ^{[1
]}

Alsadun, Norah ^{[1
,6
]}

Shekhah, Osama ^{[1
]}

Di Fabrizio, Enzo ^{[3
,4
,5
]}

Smit, Berend ^{[2
]}

Eddaoudi, Mohamed ^{[1
]}

机构：

[1] King Abdullah Univ Sci & Technol KAUST, Adv Membranes & Porous Mat Ctr AMPMC, Div Phys Sci & Engn PSE, Funct Mat Design Discovery & Dev Res Grp FMD3, Thuwal 239556900, Saudi Arabia

[2] Ecole Polytech Fed Lausanne EPFL, Inst Sci & Ingn Chim, Lab Mol Simulat, Rue Ind 17, CH-1951 Sion, Valais, Switzerland

[3] King Abdullah Univ Sci & Technol, Phys Sci & Engn PSE Div, SMILEs Lab, Thuwal 239556900, Saudi Arabia

[4] King Abdullah Univ Sci & Technol, Biol & Environm Sci & Engn BESE Div, Thuwal 239556900, Saudi Arabia

[5] Politecn Torino, DISAT Dept, Corso Duca Abruzzi 24, I-10129 Turin, Italy

[6] King Faisal Univ KFU, Coll Sci, Dept Chem, Al Hasa 31982, Saudi Arabia

来源：

MATTER | 2023年 / 6卷 / 01期

基金：

瑞士国家科学基金会; 欧盟地平线“2020”; 英国工程与自然科学研究理事会;

关键词：

FORCE-FIELD; STABILITY; CONSTRUCTION; CRYSTALS; CO2;

D O I：

10.1016/j.matt.2022.10.004

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Access to metal-organic frameworks (MOFs) with enhanced me-chanical stability is key to their successful deployment in practical applications. However, the high porosity of the material often af-fects mechanical stability. In this article, to achieve highly porous MOFs with enhanced mechanical stability, we explored the merged-net approach where two relatively fragile frameworks were merged into a robust MOF structure. We demonstrate the effectiveness of this approach by computationally evaluating me-chanical properties of sph-MOFs with varying lengths of linkers. Prominently, we pinpoint the significance of triangular rigidity on the robustness of large-pore MOFs and, subsequently, designed and synthesized a rare earth (RE)-based RE-sph-MOF-5 by the retic-ulation of hexanuclear RE clusters, tritopic linkers, and unprecedent-edly large planar hexatopic linkers containing 19 phenyl rings. The mechanical properties of sph-MOFs were characterized and quanti-fied using amplitude-frequency modulation (AM-FM) bimodal atomic force microscopy (AFM) analyses. Markedly, the mesoporous RE-sph-MOF-5 expresses high mechanical stability despite its large mesoporous cavities.

引用

页码：285 / 295

页数：12

共 41 条

[1] Ultra-Tuning of the Rare-Earth fcu-MOF Aperture Size for Selective Molecular Exclusion of Branched Paraffins [J].