scholarly journals Void Space vs. Surface Functionalization for Proton Conduction in Metal‐Organic Frameworks

2021 ◽  
Author(s):  
Marvin K. Sarango‐Ramírez ◽  
Junkil Park ◽  
Jihan Kim ◽  
Yukihiro Yoshida ◽  
Dae‐Woon Lim ◽  
...  
Keyword(s):  
Surface Functionalization ◽  
Metal Organic Frameworks ◽  
Proton Conduction ◽  
Void Space ◽  
Metal Organic

Void Space vs. Surface Functionalization for Proton Conduction in Metal–Organic Frameworks

2021 ◽  
Author(s):  
Marvin K Sarango-Ramírez ◽  
Junkil Park ◽  
Jihan Kim ◽  
Yukihiro Yoshida ◽  
Dae-Woon Lim ◽  
...  
Keyword(s):  
Surface Functionalization ◽  
Metal Organic Frameworks ◽  
Proton Conduction ◽  
Void Space ◽  
Metal Organic

Void Space vs. Surface Functionalization for Proton Conduction in Metal–Organic Frameworks

2021 ◽  
Author(s):  
Marvin K Sarango-Ramírez ◽  
Junkil Park ◽  
Jihan Kim ◽  
Yukihiro Yoshida ◽  
Dae-Woon Lim ◽  
...  
Keyword(s):  
Surface Functionalization ◽  
Metal Organic Frameworks ◽  
Proton Conduction ◽  
Void Space ◽  
Metal Organic

scholarly journals Void Space vs. Surface Functionalization for Proton Conduction in Metal‐Organic Frameworks

2021 ◽  
Author(s):  
Marvin K. Sarango‐Ramírez ◽  
Junkil Park ◽  
Jihan Kim ◽  
Yukihiro Yoshida ◽  
Dae‐Woon Lim ◽  
...  
Keyword(s):  
Surface Functionalization ◽  
Metal Organic Frameworks ◽  
Proton Conduction ◽  
Void Space ◽  
Metal Organic

Quantum Mechanical Interpretation of the Ultra-Low Energy Methyl-Rotation Dynamics in Porous Metal-Organic Frameworks Probed by Low-Frequency Vibrational Spectroscopy and ab initio Simulations

2018 ◽  
Author(s):  
Qi Li ◽  
Adam J. Zaczek ◽  
Timothy M. Korter ◽  
J. Axel Zeitler ◽  
Michael T. Ruggiero
Keyword(s):  
Ab Initio ◽  
Metal Organic Frameworks ◽  
Low Frequency ◽  
Rotor Dynamics ◽  
Quantum Mechanical ◽  
Valuable Insight ◽  
Void Space ◽  
Ab Initio Simulations ◽  
Metal Organic ◽  
Insight Into

<div>Understanding the nature of the interatomic interactions present within the pores of metal-organic frameworks</div><div>is critical in order to design and utilize advanced materials</div><div>with desirable applications. In ZIF-8 and its cobalt analogue</div><div>ZIF-67, the imidazolate methyl-groups, which point directly</div><div>into the void space, have been shown to freely rotate - even</div><div>down to cryogenic temperatures. Using a combination of ex-</div><div>perimental terahertz time-domain spectroscopy, low-frequency</div><div>Raman spectroscopy, and state-of-the-art ab initio simulations,</div><div>the methyl-rotor dynamics in ZIF-8 and ZIF-67 are fully charac-</div><div>terized within the context of a quantum-mechanical hindered-</div><div>rotor model. The results lend insight into the fundamental</div><div>origins of the experimentally observed methyl-rotor dynamics,</div><div>and provide valuable insight into the nature of the weak inter-</div><div>actions present within this important class of materials.</div>

Metal-Organic Frameworks (MOFs) as Multivalent Materials: Size Control and Surface Functionalization by Monovalent Capping Ligands

2015 ◽  
Vol 21 (29) ◽  
pp. 10296-10301 ◽  
Author(s):  
Timon Rijnaarts ◽  
Raquel Mejia-Ariza ◽  
Richard J. M. Egberink ◽  
Wies van Roosmalen ◽  
Jurriaan Huskens
Keyword(s):  
Surface Functionalization ◽  
Metal Organic Frameworks ◽  
Size Control ◽  
Metal Organic ◽  
Capping Ligands

scholarly journals X-ray crystallographic insights into post-synthetic metalation products in a metal–organic framework

2017 ◽  
Vol 375 (2084) ◽  
pp. 20160028 ◽  
Author(s):  
Michael T. Huxley ◽  
Campbell J. Coghlan ◽  
Witold M. Bloch ◽  
Alexandre Burgun ◽  
Christian J. Doonan ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Coordination Sphere ◽  
Metal Organic Frameworks ◽  
Void Space ◽  
X Ray ◽  
X Ray Crystallography ◽  
Metal Nitrates ◽  
Metal Organic

Post-synthetic modification of metal–organic frameworks (MOFs) facilitates a strategic transformation of potentially inert frameworks into functionalized materials, tailoring them for specific applications. In particular, the post-synthetic incorporation of transition-metal complexes within MOFs, a process known as ‘metalation’, is a particularly promising avenue towards functionalizing MOFs. Herein, we describe the post-synthetic metalation of a microporous MOF with various transition-metal nitrates. The parent framework, 1 , contains free-nitrogen donor chelation sites, which readily coordinate metal complexes in a single-crystal to single-crystal transformation which, remarkably, can be readily monitored by X-ray crystallography. The presence of an open void surrounding the chelation site in 1 prompted us to investigate the effect of the MOF pore environment on included metal complexes, particularly examining whether void space would induce changes in the coordination sphere of chelated complexes reminiscent of those found in the solution state. To test this hypothesis, we systematically metalated 1 with first-row transition-metal nitrates and elucidated the coordination environment of the respective transition-metal complexes using X-ray crystallography. Comparison of the coordination sphere parameters of coordinated transition-metal complexes in 1 against equivalent solid- and solution-state species suggests that the void space in 1 does not markedly influence the coordination sphere of chelated species but we show notably different post-synthetic metalation outcomes when different solvents are used. This article is part of the themed issue ‘Coordination polymers and metal–organic frameworks: materials by design’.

UiO-66 derivatives and their composite membranes for effective proton conduction

2020 ◽  
Vol 49 (47) ◽  
pp. 17130-17139
Author(s):  
Lu Feng ◽  
Hao-Bo Hou ◽  
Hong Zhou
Keyword(s):  
Fuel Cells ◽  
Proton Exchange Membrane ◽  
Metal Organic Frameworks ◽  
Composite Membranes ◽  
Proton Conduction ◽  
Proton Exchange ◽  
Proton Conducting ◽  
Conducting Materials ◽  
Metal Organic ◽  
Exchange Membrane

As newly emerging proton-conducting materials, metal–organic frameworks (MOFs) have been attracting wide attention in the field of proton exchange membrane fuel cells.

Proton Conduction and Long-Range Ferrimagnetic Ordering in Two Isostructural Copper(II) Mesoxalate Metal–Organic Frameworks

2015 ◽  
Vol 54 (4) ◽  
pp. 1597-1605 ◽  
Author(s):  
Beatriz Gil-Hernández ◽  
Stanislav Savvin ◽  
Gamall Makhloufi ◽  
Pedro Núñez ◽  
Christoph Janiak ◽  
...  
Keyword(s):  
Long Range ◽  
Metal Organic Frameworks ◽  
Proton Conduction ◽  
Metal Organic ◽  
Ferrimagnetic Ordering

scholarly journals Methyl-rotation dynamics in metal–organic frameworks probed with terahertz spectroscopy

2018 ◽  
Vol 54 (45) ◽  
pp. 5776-5779 ◽  
Author(s):  
Qi Li ◽  
Adam J. Zaczek ◽  
Timothy M. Korter ◽  
J. Axel Zeitler ◽  
Michael T. Ruggiero
Keyword(s):  
Terahertz Spectroscopy ◽  
Metal Organic Frameworks ◽  
Methyl Groups ◽  
Cryogenic Temperatures ◽  
Void Space ◽  
Metal Organic ◽  
Methyl Rotation ◽  
Rotation Dynamics

In ZIF-8 and its cobalt analogue ZIF-67, the imidazolate methyl-groups, which point directly into the void space, have been shown to freely rotate – even down to cryogenic temperatures.

scholarly journals The role of lattice vibration in the terahertz region for proton conduction in 2D metal–organic frameworks

2020 ◽  
Vol 11 (6) ◽  
pp. 1538-1541
Author(s):  
Tomoya Itakura ◽  
Hiroshi Matsui ◽  
Tomofumi Tada ◽  
Susumu Kitagawa ◽  
Aude Demessence ◽  
...  
Keyword(s):  
Proton Conductivity ◽  
Electronic Structures ◽  
Lattice Vibration ◽  
Metal Organic Frameworks ◽  
Proton Conduction ◽  
Terahertz Region ◽  
Metal Organic

Terahertz-regime vibrations of 2D MOFs dominate the intrinsic proton conductivity, and the motions depend on the valence electronic structures.

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