Related Experiment Video

Updated: Jul 12, 2026

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level
06:55

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level

Published on: September 26, 2016

Direct imaging of the diacetylene solid-state monomer-polymer phase transformation

J Liao, D C Martin

    Science (New York, N.Y.)
    |June 4, 1993
    PubMed

    More Related Videos

    Synthesis of Programmable Main-chain Liquid-crystalline Elastomers Using a Two-stage Thiol-acrylate Reaction11:17

    Synthesis of Programmable Main-chain Liquid-crystalline Elastomers Using a Two-stage Thiol-acrylate Reaction

    Published on: January 19, 2016

    Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals10:35

    Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals

    Published on: May 29, 2018

    Related Concept Videos

    Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)00:53

    Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)

    Acyclic diene metathesis polymerization or ADMET polymerization involves cross-metathesis of terminal dienes, such as 1,8-nonadiene, to give linear unsaturated polymer and ethylene. As ADMET is a reversible process, the formed ethylene gas must be removed from the reaction mixture to complete the polymerization process.
    Similar to cross-metathesis, ADMET also involves the formation of metallacyclobutane intermediate by [2+2] cycloaddition of one of the double bonds of a terminal diene with...
    [4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction01:16

    [4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction

    The Diels–Alder reaction is an example of a thermal pericyclic reaction between a conjugated diene and an alkene or alkyne, commonly referred to as a dienophile. The reaction involves a concerted movement of six π electrons, four from the diene and two from the dienophile, forming an unsaturated six-membered ring. As a result, these reactions are classified as [4+2] cycloadditions.
    Radical Chain-Growth Polymerization: Chain Branching01:17

    Radical Chain-Growth Polymerization: Chain Branching

    The skeletal structure of polymers synthesized via radical polymerization is always branched. For example, the polymerization of ethylene by radical polymerization results in a low-density grade of polyethylene with a heavily branched skeletal structure. Here, the radical site abstracts hydrogen from the growing chain, and the radical site shifts from the end (a primary carbon center) to anywhere within the growing chain (a secondary carbon center). Consequently, the part of the chain from the...