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

Heterogeneous Catalysis01:22

Heterogeneous Catalysis

Heterogeneous catalysis involves a catalyst in a different phase from the reactants. It is a process where the catalyst and the reactants are in distinct phases, typically solid and gas or liquid.Most heterogeneous catalysts are metals, metal oxides, or acids. The list includes transition metals like iron (Fe), cobalt (Co), nickel (Ni), palladium (Pd), platinum (Pt), chromium (Cr), manganese (Mn), tungsten (W), silver (Ag), and copper (Cu). These metals possess partially vacant d orbitals that...
Ziegler–Natta Chain-Growth Polymerization: Overview01:17

Ziegler–Natta Chain-Growth Polymerization: Overview

Ziegler–Natta polymerization is another form of addition or chain‐growth polymerization used for synthesizing linear polymers over branched polymers. The catalyst used for polymerization is the Ziegler–Natta catalyst, named after Karl Ziegler and Giulio Natta, who developed it in 1953. This catalyst is an organometallic complex of titanium tetrachloride and triethyl aluminum, with the active form of the catalyst being an alkyl titanium compound. Using the Ziegler–Natta catalyst, high molecular...
Metal-Ligand Bonds02:51

Metal-Ligand Bonds

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...
Cationic Chain-Growth Polymerization: Mechanism00:57

Cationic Chain-Growth Polymerization: Mechanism

The cationic polymerization mechanism consists of three steps: initiation, propagation, and termination. In the initiation step of the polymerization process, the π bond of a monomer gets protonated by the Lewis acid catalyst, which is formed from boron trifluoride and water. The protonation of the π bond generates a carbocation stabilized by the electron‐donating group. In the propagation step, the π bond of the second monomer acts as a nucleophile and attacks the generated carbocation,...
Properties of Organometallic Compounds01:23

Properties of Organometallic Compounds

Organometallic compounds are compounds that contain a carbon–metal bond. Carbon belongs to an organyl group like alkyl, aryl, allyl, or benzyl groups. The metal can be from Group I or Group II of the periodic table, a transition metal, or a semimetal.
Olefin Metathesis Polymerization: Overview01:13

Olefin Metathesis Polymerization: Overview

Recently, the development of olefin metathesis polymerization advanced the field of polymer synthesis. Simply put, the reorganization of substituents on their double bonds between two olefins in the presence of a catalyst is known as the olefin metathesis reaction. The use of metathesis reaction for polymer synthesis is called olefin metathesis polymerization.
Ruthenium-based Grubbs catalyst is the most commonly used catalyst for olefin metathesis polymerization. Grubbs catalyst consists of a...

You might also read

Related Articles

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

Sort by
Same author

Selective Nitrone Synthesis via Cascade Hydrogenative Coupling of Nitro Compounds and Aldehydes Catalyzed by Single-Atom Platinum on N,P-Doped Carbon.

Journal of the American Chemical Society·2026
Same author

Operating room workflow across orthopaedic subspecialties: a retrospective analysis with implications for efficiency improvement.

International orthopaedics·2026
Same author

Investigation of Intraoperative Bacterial Contamination in Surgical Instruments Used for Total Hip Arthroplasty.

Arthroplasty today·2026
Same author

Continuous-flow carbonyl hydrogenation under subatmospheric to atmospheric hydrogen pressure enabled by robust heterogeneous Pt-Fe catalysts.

Beilstein journal of organic chemistry·2026
Same author

Bead mill-driven acceleration in catalytic methanolysis reaction of poly(ethylene terephthalate) toward low-energy chemical recycling of polymers.

Chemical science·2026
Same author

Continuous-Flow Synthesis of the Fungicide Tetraconazole: Unprecedented Selectivity in Aldol Condensation and Mechanistic Insights via In-Line 200 MHz <sup>1</sup>H NMR.

JACS Au·2026

Related Experiment Video

Updated: Jun 8, 2026

Preparation of Highly Porous Coordination Polymer Coatings on Macroporous Polymer Monoliths for Enhanced Enrichment of Phosphopeptides
10:27

Preparation of Highly Porous Coordination Polymer Coatings on Macroporous Polymer Monoliths for Enhanced Enrichment of Phosphopeptides

Published on: July 14, 2015

Polymer-incarcerated metal(0) cluster catalysts.

Shū Kobayashi1, Hiroyuki Miyamura

  • 1Department of Chemistry, School of Science and Graduate School of Pharmaceutical Sciences, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan. shu_kobayashi@chem.s.u-tokyo.ac.jp

Chemical Record (New York, N.Y.)
|September 28, 2010
PubMed
Summary

New polymer-incarcerated metal nanocluster catalysts offer stable and reusable options for redox reactions. These catalysts demonstrate efficient immobilization and prevent metal leaching, showing potential for enhanced reactivity.

More Related Videos

Ethylene Polymerizations Using Parallel Pressure Reactors and a Kinetic Analysis of Chain Transfer Polymerization
07:28

Ethylene Polymerizations Using Parallel Pressure Reactors and a Kinetic Analysis of Chain Transfer Polymerization

Published on: November 27, 2015

In Situ SIMS and IR Spectroscopy of Well-defined Surfaces Prepared by Soft Landing of Mass-selected Ions
10:22

In Situ SIMS and IR Spectroscopy of Well-defined Surfaces Prepared by Soft Landing of Mass-selected Ions

Published on: June 16, 2014

Related Experiment Videos

Last Updated: Jun 8, 2026

Preparation of Highly Porous Coordination Polymer Coatings on Macroporous Polymer Monoliths for Enhanced Enrichment of Phosphopeptides
10:27

Preparation of Highly Porous Coordination Polymer Coatings on Macroporous Polymer Monoliths for Enhanced Enrichment of Phosphopeptides

Published on: July 14, 2015

Ethylene Polymerizations Using Parallel Pressure Reactors and a Kinetic Analysis of Chain Transfer Polymerization
07:28

Ethylene Polymerizations Using Parallel Pressure Reactors and a Kinetic Analysis of Chain Transfer Polymerization

Published on: November 27, 2015

In Situ SIMS and IR Spectroscopy of Well-defined Surfaces Prepared by Soft Landing of Mass-selected Ions
10:22

In Situ SIMS and IR Spectroscopy of Well-defined Surfaces Prepared by Soft Landing of Mass-selected Ions

Published on: June 16, 2014

Area of Science:

  • Materials Science
  • Catalysis
  • Nanotechnology

Background:

  • Developing stable and reusable catalysts is crucial for efficient chemical transformations.
  • Metal nanoclusters offer high surface area and activity but often suffer from aggregation and leaching.
  • Polymer-based supports present a promising strategy for nanocluster stabilization.

Purpose of the Study:

  • To develop polymer-incarcerated metal(0) nanocluster catalysts using microencapsulation and cross-linking techniques.
  • To investigate the immobilization efficiency and stability of various metal nanoclusters (Pd, Au, Pt, bimetallic) on polymers.
  • To evaluate the catalytic performance and reusability of these nanocluster catalysts in redox reactions.

Main Methods:

  • Synthesis of metal(0) nanoclusters encapsulated within polymers via microencapsulation and cross-linking.
  • Characterization of nanocluster size, distribution, and stability within the polymer matrix.
  • Testing catalytic activity in redox reactions utilizing molecular hydrogen and oxygen.
  • Assessing catalyst reusability and metal leaching over multiple reaction cycles.

Main Results:

  • Efficient immobilization of subnanometer- to nanometer-sized Pd, Au, Pt, and bimetallic nanoclusters on polymers containing benzene rings.
  • Catalysts demonstrated high stability, with no observed aggregation or metal leaching during redox reactions.
  • The polymer-incarcerated nanocluster catalysts were successfully reused multiple times without significant loss of activity.
  • Modification of polymer supports and incorporation of inorganic materials sometimes led to increased catalytic reactivity.

Conclusions:

  • Polymer-incarcerated metal nanocluster catalysts provide a robust platform for stable and reusable heterogeneous catalysis.
  • The developed methods allow for efficient control over nanocluster size and immobilization, crucial for catalytic performance.
  • These catalysts show significant potential for applications in various redox reactions, offering an environmentally friendly and cost-effective alternative.