Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Colors and Magnetism03:02

Colors and Magnetism

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 eye.
Diamagnetism01:26

Diamagnetism

Materials consisting of paired electrons have zero net magnetic moments. However, when these materials are placed under an external magnetic field, the moments opposite to the field are induced. Such materials are called diamagnets. Diamagnetism is the response of the diamagnets when placed in an external magnetic field.
Diamagnetism was discovered by Anton Brugmans in 1778 when he observed that bismuth gets repelled by magnetic fields, thus theorizing that diamagnets get repelled by magnets.
Valence Bond Theory02:42

Valence Bond Theory

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...
Paramagnetism01:30

Paramagnetism

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...
Magnetic Susceptibility and Permeability01:31

Magnetic Susceptibility and Permeability

In linear magnetic materials, like paramagnets and diamagnets, magnetization is proportional to the magnetic field intensity. The constant of proportionality, a dimensionless number, is called magnetic susceptibility. The value of the susceptibility depends on the type of material.
When diamagnetic materials are placed under an external magnetic field, the moments opposite to the field are induced. Hence, the susceptibility for diamagnets has a minimal negative value of 10-5–10-6. Since...
Potential Due to a Magnetized Object01:24

Potential Due to a Magnetized Object

Magnetic dipoles in magnetic materials are aligned when placed under an external magnetic field. For paramagnets and ferromagnets, dipole alignment occurs in the direction of the magnetic field. However, the dipoles align opposite to the field in the case of diamagnets. This state of magnetic polarization due to the external field is called magnetization. Magnetization is defined as the dipole moment per unit volume. It plays a similar role to polarization in electrostatics.
The vector...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Interferometric scattering for optical tomoslicing of transparent solids.

Light, science & applications·2026
Same author

O-Glycoprotein DeGP-4 From Dioscorea esculenta (Lour.) Burkill: Isolation, Structural Characterization, and Potent Anti-Triple-Negative Breast Cancer Activity.

Chemistry & biodiversity·2026
Same author

Dynamic molecular networks unveil the mechanism behind hypoxia-induced tumour cell dormancy.

Biological reviews of the Cambridge Philosophical Society·2026
Same author

A new amide alkaloid from the coculture liquid cultures of two grape endophytic fungi <i>Penicillium</i> sp. YPT103-2 and <i>Penicillium</i> sp. YPT104.

Natural product research·2026
Same author

An Underwater Self-Healing Polysulfide Elastomer with In-Situ Curing and Adhesion.

Polymer science & technology (Washington, D.C.)·2026
Same author

A CD206-Targeted Singlet-Oxygen Battery for Type I/II Photodynamic Therapy of Deep-Seated Colorectal Cancer.

Advanced healthcare materials·2026

Related Experiment Video

Updated: Jun 1, 2026

Optimized Setup and Protocol for Magnetic Domain Imaging with In Situ Hysteresis Measurement
09:43

Optimized Setup and Protocol for Magnetic Domain Imaging with In Situ Hysteresis Measurement

Published on: November 7, 2017

Distinct magnetic dynamic behavior for two polymorphs of the same Dy(III) complex.

Dong-Ping Li1, Xiao-Peng Zhang, Tian-Wei Wang

  • 1State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093, PR China.

Chemical Communications (Cambridge, England)
|May 21, 2011
PubMed
Summary

Polymorphic crystals of a dysprosium(III) complex exhibit different magnetic relaxation behaviors. This study demonstrates tuning magnetic properties by crystal polymorphism without altering the ligand.

More Related Videos

Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
06:53

Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks

Published on: June 9, 2023

Paramagnetic Relaxation Enhancement for Detecting and Characterizing Self-Associations of Intrinsically Disordered Proteins
07:24

Paramagnetic Relaxation Enhancement for Detecting and Characterizing Self-Associations of Intrinsically Disordered Proteins

Published on: September 23, 2021

Related Experiment Videos

Last Updated: Jun 1, 2026

Optimized Setup and Protocol for Magnetic Domain Imaging with In Situ Hysteresis Measurement
09:43

Optimized Setup and Protocol for Magnetic Domain Imaging with In Situ Hysteresis Measurement

Published on: November 7, 2017

Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
06:53

Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks

Published on: June 9, 2023

Paramagnetic Relaxation Enhancement for Detecting and Characterizing Self-Associations of Intrinsically Disordered Proteins
07:24

Paramagnetic Relaxation Enhancement for Detecting and Characterizing Self-Associations of Intrinsically Disordered Proteins

Published on: September 23, 2021

Area of Science:

  • Inorganic Chemistry
  • Materials Science
  • Magnetochemistry

Background:

  • Dysprosium(III) complexes are investigated for single-molecule magnet properties.
  • Polymorphism, the ability of a compound to crystallize in multiple structures, can influence material properties.
  • Controlling magnetic properties at the molecular level is crucial for developing advanced magnetic materials.

Purpose of the Study:

  • To investigate the impact of polymorphism on the magnetic relaxation dynamics of a neutral Dy(III) complex.
  • To demonstrate a novel method for tuning magnetic properties through crystal engineering.
  • To establish a structure-property relationship in Dy(III) based magnetic materials.

Main Methods:

  • Synthesis and characterization of two distinct polymorphs of a Dy(III) complex.
  • Single-crystal X-ray diffraction analysis to determine the local coordination environment of Dy(III) in each polymorph.
  • Magnetic susceptibility measurements (DC and AC) to probe the slow magnetic relaxation behavior.

Main Results:

  • Two polymorphs of the Dy(III) complex were successfully isolated and structurally characterized.
  • Distinct local environments of the Dy(III) ion were observed in the two crystal structures.
  • The two polymorphs exhibited significantly different slow magnetic relaxation behaviors, indicating a modulation of magnetic dynamics.
  • The observed differences in magnetic behavior correlate with the variations in the Dy(III) local environment.

Conclusions:

  • The crystal structure (polymorphism) of Dy(III) complexes plays a critical role in determining their magnetic relaxation dynamics.
  • Tuning magnetic properties can be achieved by controlling the crystalline form of the material, even with an identical molecular structure and ligand.
  • This work provides a new strategy for designing and optimizing lanthanide-based single-molecule magnets through crystal engineering.