Mechanical-pressure induced response of the MOF Al-MIL-53-TDC. (15th November 2018)

• Record Type: Journal Article
• Authors: Wahiduzzaman, Mohammad; Reimer, Nele; Itié, Jean-Paul; Stock, Norbert; Maurin, Guillaume; Yot, Pascal G.
• Is Part Of: Polyhedron. Volume 155(2018)
• Page Start: 144
• Page End: 148
• Publication Date: 2018-11-15
• Subjects: Metal-organic frameworks -- Mechanical behavior -- High pressure X-ray powder diffraction -- Aluminium -- Nano-damper; Chemistry, Inorganic -- Periodicals; Chimie inorganique -- Périodiques; Organometaalverbindingen; Anorganische chemie; 546.05
• DOI: 10.1016/j.poly.2018.08.045
• Languages: English
• ISSNs: 0277-5387

Abstract

Graphical abstract: Al-MIL-53-TDC (TDC = 2, 5-thiophenedicarboxylate) posses the highest value of work energy compared to the one determined for the Metal-Organic Frameworks of the MIL-53's family (MIL stands for Materials of Institut Lavoisier) revealing the influence of the organic linker on the mechanical behavior of these solids. Abstract: The mechanical behavior of the recently synthesized flexible metal organic framework [Al(OH)(TDC)] with the well-known MIL-53 topology, built of 2, 5-thiophenedicarboxylate (TDC 2− ), OH – and Al 3+ ions, named Al-MIL-53-TDC, has been explored using a combination of advanced characterization tools including mercury intrusion and high-pressure synchrotron X-ray powder diffraction, supported by Density Functional Theory calculations. This hybrid porous material was shown to exhibit a pressure-induced reversible structural contraction at ∼275 MPa associated with a unit cell volume change of ∼28.1% and a hysteresis loop once the pressure is released. This leads to an unprecedented energy work of 79 J g −1 that can be stored during one compression/decompression cycle for such a class of porous solids presenting a large-pore form ↔ closed-pore form phase transition. As such Al-MIL-53-TDC is at this time the best candidate of the MIL-53's family for a future potential application where a nano-damper is required.