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

Exceptions to the Octet Rule02:55

Exceptions to the Octet Rule

37.8K
Many covalent molecules have central atoms that do not have eight electrons in their Lewis structures. These molecules fall into three categories:
37.8K
Lewis Symbols and the Octet Rule02:36

Lewis Symbols and the Octet Rule

82.1K
Chemical bonds are complex interactions between two or more atoms or ions, which reduce the potential energy of the molecule. Gilbert N. Lewis developed a model called the Lewis model that simplified the depiction of chemical bond formation and provided straightforward explanations for the chemical bonds seen in most common compounds.
82.1K
π Molecular Orbitals of the Allyl Radical01:27

π Molecular Orbitals of the Allyl Radical

4.6K
Allyl radicals are three-carbon conjugated systems. They are readily formed as intermediates in halogenation reactions of alkenes involving the addition of halogen to the allylic carbon instead of the double bond. As seen in allyl cations and anions, each of the three sp2-hybridized carbon atoms in allyl radicals has an unhybridized p orbital. These orbitals combine to give three π molecular orbitals.
The allyl systems have identical molecular orbitals but differ in the number of π electrons....
4.6K
Polymers02:34

Polymers

41.1K
The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the...
41.1K
Average Acceleration01:30

Average Acceleration

14.3K
The importance of understanding acceleration spans our day-to-day experiences, as well as the vast reaches of outer space and the tiny world of subatomic physics. In everyday conversation, to accelerate means to speed up. For instance, we are familiar with the acceleration of our car; the harder we apply our foot to the gas pedal, the faster we accelerate. The greater the acceleration, the greater the change in velocity over a given time. Acceleration is widely seen in experimental physics. In...
14.3K
Conjugated Proteins02:50

Conjugated Proteins

29.0K
Simple proteins and protein complexes contain only amino acids. In contrast, many other proteins, called conjugated proteins, covalently bond with non-protein moieties.
Nucleoproteins are protein complexes that contain nucleic acids, categorized as deoxyribonucleoproteins (DNPs) or ribonucleoproteins (RNPs) respectively. The nucleosome is a typical example of a DNP where nuclear DNA is associated with histone proteins. The major antigen for the Covid-19 virus SARS-CoV is an RNP that is critical...
29.0K

You might also read

Related Articles

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

Sort by
Same author

Designing n-Type Thermogalvanic TEMPO-Substituted Polyacrylamide via Conformational Entropic Modulation.

ACS macro letters·2026
Same author

Vertical Component Distributions in Organic Solar Cells Controlled by Photocrosslinking and Layer-by-Layer Deposition.

Small (Weinheim an der Bergstrasse, Germany)·2025
Same author

Organic neuromorphics and bioelectronics: general discussion.

Faraday discussions·2024
Same author

Organic thermoelectrics: general discussion.

Faraday discussions·2024
Same author

Organic batteries: general discussion.

Faraday discussions·2024
Same author

Excitonic organic materials for photochemical and optoelectronic applications: general discussion.

Faraday discussions·2024

Related Experiment Video

Updated: Feb 11, 2026

Particles without a Box: Brush-first Synthesis of Photodegradable PEG Star Polymers under Ambient Conditions
06:56

Particles without a Box: Brush-first Synthesis of Photodegradable PEG Star Polymers under Ambient Conditions

Published on: October 10, 2013

40.3K

Average Octet Radical Polymer: A Stable Polyphenoxyl with Star-Shaped π Conjugation.

Hiroyuki Nishide1, Makoto Miyasaka1, Eishun Tsuchida1

  • 1Department of Polymer Chemistry, Waseda University, Tokyo 169-8555 (Japan), Fax: (+81) 3-3209-5522.

Angewandte Chemie (International Ed. in English)
|May 2, 2018
PubMed
Summary

Star-shaped polyradical 1 exhibits a high average spin quantum number of 7/2. This stable, π-conjugated polymer is a promising candidate for creating materials with very high spin concentrations.

Keywords:
EPR spectroscopyMagnetic propertiesPolymersPolyradicalsRadicals

More Related Videos

Shape Memory Polymers for Active Cell Culture
10:53

Shape Memory Polymers for Active Cell Culture

Published on: July 4, 2011

13.9K
Fabrication of a Bioactive, PCL-based "Self-fitting" Shape Memory Polymer Scaffold
09:37

Fabrication of a Bioactive, PCL-based "Self-fitting" Shape Memory Polymer Scaffold

Published on: October 23, 2015

13.5K

Related Experiment Videos

Last Updated: Feb 11, 2026

Particles without a Box: Brush-first Synthesis of Photodegradable PEG Star Polymers under Ambient Conditions
06:56

Particles without a Box: Brush-first Synthesis of Photodegradable PEG Star Polymers under Ambient Conditions

Published on: October 10, 2013

40.3K
Shape Memory Polymers for Active Cell Culture
10:53

Shape Memory Polymers for Active Cell Culture

Published on: July 4, 2011

13.9K
Fabrication of a Bioactive, PCL-based "Self-fitting" Shape Memory Polymer Scaffold
09:37

Fabrication of a Bioactive, PCL-based "Self-fitting" Shape Memory Polymer Scaffold

Published on: October 23, 2015

13.5K

Area of Science:

  • Organic Chemistry
  • Materials Science
  • Quantum Mechanics

Background:

  • π-conjugated polyradicals are of interest for their unique magnetic properties.
  • Achieving high spin states in organic materials is a key challenge in molecular magnetism.

Purpose of the Study:

  • To synthesize and characterize a novel star-shaped, π-conjugated polyradical.
  • To investigate the spin properties and stability of the synthesized polymer.

Main Methods:

  • Synthesis of the star-shaped polyradical (Polymer 1).
  • Characterization of its spin quantum number and spin concentration.
  • Assessment of its thermal stability at room temperature.

Main Results:

  • Polymer 1 displays an average spin quantum number of 7/2.
  • A high spin concentration of 0.8 per monomer unit was observed.
  • The polymer demonstrated stability at room temperature.

Conclusions:

  • The synthesized polyradical is a stable material with a significant average spin quantum number.
  • Polymer 1 represents a viable precursor for developing organic polymers with exceptionally high spin.