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

Ferromagnetism01:31

Ferromagnetism

2.4K
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...
2.4K
Properties of Enantiomers and Optical Activity02:24

Properties of Enantiomers and Optical Activity

17.0K
It is essential to understand the difference between chiral and achiral interactions and the implications thereof in optical activity and their applications. Just as our feet, which are chiral, interact uniquely with chiral objects, such as a pair of shoes, but identically with achiral socks, enantiomers of a molecule exhibit different properties only when they interact with other chiral media. An example of a significant implication from this facet is the phenomenon known as optical activity,...
17.0K
Stereoisomerism02:52

Stereoisomerism

11.8K
Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...
11.8K
Colors and Magnetism03:02

Colors and Magnetism

11.6K
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...
11.6K
Dielectric Polarization in a Capacitor01:31

Dielectric Polarization in a Capacitor

4.7K
The presence of a dielectric medium in a capacitor not only changes the voltage and capacitance but also affects the electric field. In general, dielectrics can be of two types: polar and nonpolar. In a polar dielectric, the positive and negative charges in the molecules are separated by a distance and hence have a permanent dipole moment. In contrast, no such charge separation exists in a nonpolar dielectric, however the nonpolar molecules get polarized in the presence of an external electric...
4.7K
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

26.4K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
26.4K

You might also read

Related Articles

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

Sort by
Same author

Molecular Dipole Engineering in Layered Perovskite Ferroelectrics Enables Large Rashba-Dresselhaus Spin Splitting and Persistent Spin Texture for UV Circularly Polarized Light Detection.

Journal of the American Chemical Society·2026
Same author

Coupled ferroelectricity and phonon chirality.

Nature communications·2026
Same author

Mixing of Spacer Cations in 2D Halide Perovskites.

Journal of the American Chemical Society·2026
Same author

Stereochemically Active Lone Pair Effect of Cations Triggers Giant Rashba-Dresselhaus Spin Splitting in Ferroelectric Semiconductors for Circularly Polarized Light Detection.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

Molecular Symmetry and Geometry Engineering for High-Temperature Ferroelectricity and Low Coercive Field in Hybrid Metal Halides.

Angewandte Chemie (International ed. in English)·2025
Same author

N-Methylation and Fluorination of the Arylammonium Cation Enable Melting Point Suppression in Layered Hybrid Metal Halides.

Small (Weinheim an der Bergstrasse, Germany)·2025

Related Experiment Video

Updated: Jun 26, 2025

Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals
07:03

Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals

Published on: August 15, 2018

8.8K

Coupled Ferroelectricity and Optical Activity in Optically Active Ferroelectrics.

Xiang-Bin Han1, Wen Zhang1

  • 1Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics and School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China.

The Journal of Physical Chemistry Letters
|May 8, 2024
PubMed
Summary
This summary is machine-generated.

This study introduces optically active ferroelectrics, exploring the link between chirality and electric polarization. It reveals how electric fields can control both properties, enabling new applications in chiral materials.

More Related Videos

Bulk and Thin Film Synthesis of Compositionally Variant Entropy-stabilized Oxides
09:41

Bulk and Thin Film Synthesis of Compositionally Variant Entropy-stabilized Oxides

Published on: May 29, 2018

9.5K
A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy
10:40

A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy

Published on: April 8, 2018

8.2K

Related Experiment Videos

Last Updated: Jun 26, 2025

Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals
07:03

Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals

Published on: August 15, 2018

8.8K
Bulk and Thin Film Synthesis of Compositionally Variant Entropy-stabilized Oxides
09:41

Bulk and Thin Film Synthesis of Compositionally Variant Entropy-stabilized Oxides

Published on: May 29, 2018

9.5K
A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy
10:40

A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy

Published on: April 8, 2018

8.2K

Area of Science:

  • Solid State Physics
  • Crystallography
  • Materials Science

Background:

  • Ferroelectricity was first observed in the chiral compound Rochelle salt.
  • The relationship between ferroelectricity and optical activity in chiral and polar materials is not fully understood.
  • Chiral ferroelectrics derived from achiral units present an underexplored area.

Purpose of the Study:

  • To propose a new concept of optically active ferroelectrics.
  • To investigate the mechanism linking ferroelectricity and optical activity in chiral systems.
  • To explore applications in generating chiral and polar isomers.

Main Methods:

  • Theoretical proposal of optically active ferroelectrics in seven specific point groups.
  • Elucidation of the mechanism involving coupled chirality and polarity flipping.
  • Demonstration of applications for in situ generation of enantiomers and isomers.

Main Results:

  • A novel concept of optically active ferroelectrics is introduced.
  • The mechanism of coupled ferroelectricity and optical activity is explained via electric field-induced effects.
  • Potential for in situ generation of chiral enantiomers and polar isomers is demonstrated.

Conclusions:

  • This work advances the understanding of ferroelectricity and optical activity in chiral materials.
  • The proposed concept opens new avenues for research in chiral/polar systems.
  • Applications in generating specific isomers are highlighted for the chiral/polar research community.