Related Concept Videos
03:02Colors and Magnetism
14.6K
Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
14.6K
01:31Ferromagnetism
3.5K
Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...
3.5K
01:30Paramagnetism
3.2K
Paramagnets are materials with unpaired electrons that possess a finite magnetic moment. In the absence of a magnetic field, these moments are randomly oriented, and thus the net moment is zero. Under an external field, a torque acting on the moments tends to align them along the field's direction. However, the random thermal motion of electrons produces a torque opposite to the external field and tries to disorient the moments. These two competing effects align only a few moments along the...
3.2K
01:25Applications Of NMR In Biology
4.7K
Nuclear magnetic resonance (NMR) spectroscopy is a very valuable analytical technique for researchers. It has been used for more than 50 years as an analytical tool. F. Bloch and E. Purcell formulated NMR in 1946 and won the 1952 Nobel Prize in Physics for their work. Biological macromolecules such as proteins, nucleic acids, lipids, and organic molecules including pharmaceutical compounds, can be studied using this versatile tool that exploits the magnetic properties of certain nuclei.
4.7K
01:30Magnetism
9.8K
Magnets are commonly found in everyday objects, such as toys, hangers, elevators, doorbells, and computer devices. Experimentation on these magnets shows that all magnets have two poles: one is labeled north (N) and the other south (S). Magnetic poles repel if they are alike and attract if unlike. Moreover, both poles of a magnet attract unmagnetized pieces of iron.
An individual magnetic pole cannot be isolated. No matter how small, every piece of a magnet contains a north pole and a south...
An individual magnetic pole cannot be isolated. No matter how small, every piece of a magnet contains a north pole and a south...
9.8K
02:42Valence Bond Theory
11.6K
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...
11.6K
You might also read
Related Articles
Articles linked to this work by shared authors, journal, and citation graph.
Sort by
Same author
Persistent compensated ferrimagnetism in the molecular framework Cr(pyrazine)<sub>3</sub>.
Nature chemistry·2026
Same author
Heavy Prussian Blue Analog with Magnetic Ordering above 400 K.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2025
Related Experiment Video
Updated: Mar 26, 2026
06:53
Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
Published on: June 9, 2023
2.8K
Multifunctionality in molecular magnetism.
Science Progress
|January 22, 2016
Summary
This article introduces multifunctional molecular magnets, highlighting their potential for nanoscale devices. These advanced materials combine structural chemistry and physics for novel magnetic properties at higher temperatures.
Area of Science:
- Molecular magnetism
- Materials science
- Condensed matter physics
Background:
- Molecular magnetism merges structural chemistry and experimental physics.
- Multifunctional molecular magnets are a high-profile research area.
- Recent advances enable higher operating temperatures and multifunctionality.
Purpose of the Study:
- To introduce the field of multifunctional molecular magnets.
- To provide a subjective overview of inspiring examples.
- To discuss potential applications in nanoscale devices.
Main Methods:
- Review of recent advances in molecular magnetism.
- Discussion of selected examples of multifunctional molecular magnets.
- Focus on materials exhibiting non-trivial magnetic properties.
Main Results:
- Development of new generations of multifunctional molecular magnets.
- Demonstration of retained functions and higher temperature magnetic properties.
- Examples include magnetic sponges, guest-responsive magnets, and photomagnets.
Conclusions:
- Multifunctional molecular magnets show promise for future nanoscale devices.
- The field offers diverse applications beyond simple magnetism.
- Continued research is essential for unlocking their full potential.