Related Experiment Video
Updated: Feb 6, 2026
11:27
Synthesis and Characterization of Functionalized Metal-organic Frameworks
Published on: September 5, 2014
49.2K
Reversible structural transformation induced switchable single-molecule magnet behavior in lanthanide metal-organic
Mengmeng Wang1, Xixi Meng, Fen Song
1Department of Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China. shiwei@nankai.edu.cn pcheng@nankai.edu.cn.
Chemical Communications (Cambridge, England)
|August 24, 2018
Summary
Researchers achieved switchable single-molecule magnet (SMM) behavior in lanthanide metal-organic frameworks (Ln-MOFs). This "on/off" functionality is controlled by temperature-induced changes in the lanthanide coordination geometry.
Area of Science:
- Materials Science
- Chemistry
- Physics
Background:
- Single-molecule magnets (SMMs) are crucial for advanced magnetic storage and quantum computing.
- Lanthanide metal-organic frameworks (Ln-MOFs) offer tunable structures for SMM applications.
- Controlling SMM behavior is essential for practical applications.
Purpose of the Study:
- To investigate the realization of switchable "on/off" SMM behavior in Ln-MOFs.
- To explore the role of temperature-induced coordination geometry changes in controlling SMM properties.
- To establish a method for tuning magnetic properties in Ln-MOFs.
Main Methods:
- Synthesis of lanthanide metal-organic frameworks (Ln-MOFs).
- Variable-temperature magnetic susceptibility measurements.
- Single-crystal X-ray diffraction to analyze coordination geometry.
Main Results:
- Demonstrated switchable "on/off" SMM behavior in the synthesized Ln-MOFs.
- Correlated the magnetic "on/off" states with specific coordination geometries of lanthanide centers.
- Observed temperature-dependent transitions between magnetic states.
Conclusions:
- Temperature-induced changes in lanthanide coordination geometry are an effective strategy for controlling SMM behavior.
- Ln-MOFs provide a versatile platform for designing switchable molecular magnets.
- This work opens avenues for developing responsive magnetic materials.
Related Concept Videos
02:58Properties of Transition Metals
29.9K
Transition metals are defined as those elements that have partially filled d orbitals. As shown in Figure 1, the d-block elements in groups 3–12 are transition elements. The f-block elements, also called inner transition metals (the lanthanides and actinides), also meet this criterion because the d orbital is partially occupied before the f orbitals.
29.9K
01:19Oxidation and Reduction of Organic Molecules
9.4K
Energy production within a cell involves many coordinated chemical pathways. Most of these pathways are combinations of oxidation and reduction reactions, which occur at the same time. An oxidation reaction strips an electron from an atom in a compound, and the addition of this electron to another compound is a reduction reaction. Because oxidation and reduction usually occur together, these pairs of reactions are called redox reactions.
The removal of an electron from a molecule, results in a...
The removal of an electron from a molecule, results in a...
9.4K
02:51Metal-Ligand Bonds
24.3K
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...
24.3K
03:48Behavior of Gas Molecules: Molecular Diffusion, Mean Free Path, and Effusion
31.4K
Although gaseous molecules travel at tremendous speeds (hundreds of meters per second), they collide with other gaseous molecules and travel in many different directions before reaching the desired target. At room temperature, a gaseous molecule will experience billions of collisions per second. The mean free path is the average distance a molecule travels between collisions. The mean free path increases with decreasing pressure; in general, the mean free path for a gaseous molecule will be...
31.4K
01:13Structure and Organization of Smooth Muscles
8.7K
Smooth muscle tissue is a type of muscle tissue that can be found lining various vital organs in the human body, including the lungs, blood vessels, digestive tract, and respiratory tract. This type of tissue is responsible for regulating the movements of these organs, playing crucial roles in the functioning of various systems, including the vascular, digestive, respiratory, and urinary systems.
Structure of smooth muscle cell
Smooth muscle cells are spindle-shaped with tapering ends and a...
Structure of smooth muscle cell
Smooth muscle cells are spindle-shaped with tapering ends and a...
8.7K
01:28Prokaryotic Gene Structure and Organization
2.2K
Prokaryotic genomes exhibit a streamlined organization of coding and non-coding regions essential for gene expression and protein synthesis. While coding regions contain the genetic instructions for proteins or functional RNAs, non-coding regions regulate the precise transcription and translation of these genes.Coding Regions: Proteins and RNAsThe primary coding regions, known as structural genes, include sequences transcribed into messenger RNA (mRNA) and ultimately translated into...
2.2K