Related Experiment Video
Updated: Jul 5, 2025
07:14
Author Spotlight: Experimental Approaches for the Synthesis of Low-Valent Metal-Organic Frameworks from Multitopic Phosphine Linkers
Published on: May 12, 2023
2.8K
Dynamic metal-linker bonds in metal-organic frameworks
Erik Svensson Grape1,2, Audrey M Davenport1, Carl K Brozek1
1Department of Chemistry and Biochemistry, Material Science Institute, University of Oregon, Eugene, OR 97403, USA. cbrozek@uoregon.edu.
Dalton Transactions (Cambridge, England : 2003)
|January 16, 2024
Summary
Metal-organic frameworks (MOFs) feature dynamic metal-linker bonds, challenging the assumption of rigidity. These labile bonds respond to stimuli, offering new design possibilities for advanced materials.
Area of Science:
- Materials Science
- Chemistry
- Nanotechnology
Background:
- Metal-organic frameworks (MOFs) are porous materials constructed from metal ions and organic linkers.
- Historically, MOF metal-linker bonds were considered rigid and static.
- Understanding bond dynamics is crucial for explaining MOF behavior and designing responsive materials.
Purpose of the Study:
- To investigate the dynamic nature of metal-linker bonds in MOFs.
- To explore the implications of bond lability for MOF properties and applications.
- To provide evidence for stimuli-responsive behavior driven by bond dynamics.
Main Methods:
- Analysis of emerging evidence on MOF metal-linker bond equilibria.
- Investigation of guest-host chemistry interactions.
- Examination of phase change behavior and nanoparticle size-dependence.
Main Results:
- MOF metal-linker bonds exist in dynamic equilibria between weakly and tightly bound states.
- These dynamic equilibria are influenced by guest-host chemistry.
- Bond lability drives phase transitions and exhibits size-dependent phenomena in MOF nanoparticles.
Conclusions:
- MOF metal-linker bonds are not static but exhibit dynamic equilibria.
- This lability is a key factor in MOF responsiveness to stimuli.
- Exploiting these dynamic bonds offers a pathway for designing novel functional MOFs.
More Related Videos
Related Concept Videos
02:51Metal-Ligand Bonds
20.8K
The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
20.8K
01:23Properties of Organometallic Compounds
998
Organometallic compounds are compounds that contain a carbon–metal bond. Carbon belongs to an organyl group like alkyl, aryl, allyl, or benzyl groups. The metal can be from Group I or Group II of the periodic table, a transition metal, or a semimetal.
998
02:32Bonding in Metals
47.4K
Metallic bonds are formed between two metal atoms. A simplified model to describe metallic bonding has been developed by Paul Drüde called the “Electron Sea Model”.
47.4K
02:42Valence Bond Theory
8.6K
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
8.6K
01:09Complexation Equilibria: Factors Influencing Stability of Complexes
372
In complexation reactions, metal cations are the electron pair acceptors, and the ligands are the electron pair donors. The stability of the metal complexes depends primarily on the complexing ability of the central metal ion and the nature of the ligands. Generally, the complexing ability of the metal ion depends on the size and charge of the ion. As the metal ion size increases, the stability of the metal complexes decreases, provided that the valency of the metal ion and the ligands remain...
372
00:49Ligand Binding and Linkage
4.8K
Allosteric proteins have more than one ligand binding site; the binding of a ligand to any of these sites influences the binding of ligands to the other sites. When a protein is allosteric, its binding sites are called coupled or linked. In the case of enzymes, the site that binds to the substrate is known as the active site and the other site is known as the regulatory site. When a ligand binds to the regulatory site, this leads to conformational changes in the protein that can influence...
4.8K