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

Cationic Chain-Growth Polymerization: Mechanism00:57

Cationic Chain-Growth Polymerization: Mechanism

2.4K
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...
2.4K
Ziegler–Natta Chain-Growth Polymerization: Overview01:17

Ziegler–Natta Chain-Growth Polymerization: Overview

3.5K
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...
3.5K
Anionic Chain-Growth Polymerization: Mechanism01:04

Anionic Chain-Growth Polymerization: Mechanism

2.1K
The mechanism for anionic chain-growth polymerization involves initiation, propagation, and termination steps. In the initiation step, a nucleophilic anion, such as butyl lithium, initiates the polymerization process by attacking the π bond of the vinylic monomer. As a result, a carbanion, stabilized by the electron‐withdrawing group, is generated. The resulting carbanion acts as a Michael donor in the propagation step and attacks the second vinylic monomer, which acts as a Michael...
2.1K

You might also read

Related Articles

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

Sort by
Same author

A covalent organic framework membrane with electron-enriched channels for modulating hydrated zinc ion transport.

Chemical communications (Cambridge, England)·2026
Same author

Gradient-Engineered Liquid-Metal Magnetic Hollow Microspheres for Flexible and Broadband Microwave Absorption.

Small (Weinheim an der Bergstrasse, Germany)·2026
Same author

Artificial Crystalline-Amorphous Architecture Enables Continuous Ion Transport in Poly(Vinylidene Fluoride)-Based Solid-State Electrolytes.

Small (Weinheim an der Bergstrasse, Germany)·2026
Same author

An Intelligent Closed-Loop Wound Management Platform Integrated Real-Time Infection Monitoring and On-Demand Therapeutics for Infected Wound Care.

Small (Weinheim an der Bergstrasse, Germany)·2026
Same author

Bidirectional Dynamics of Dual Systems and Problematic Internet Use in Children and Adolescents: A Person-Centered Perspective.

Journal of adolescence·2026
Same author

Fast hydrated-ion transport and desolvation in pyridinyl COF membranes <i>via</i> competitive coordination.

Chemical science·2026

Related Experiment Video

Updated: Sep 22, 2025

Synthesis of Monodisperse Cylindrical Nanoparticles via Crystallization-driven Self-assembly of Biodegradable Block Copolymers
11:42

Synthesis of Monodisperse Cylindrical Nanoparticles via Crystallization-driven Self-assembly of Biodegradable Block Copolymers

Published on: June 20, 2019

7.9K

Polymeric Nanocubes Spontaneously Formed from Poly(ε-caprolactone).

Song Tu1, Bei-Lei Wang1, Yuan-Wei Chen1

  • 1College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, P. R. China.

ACS Macro Letters
|May 24, 2022
PubMed
Summary
This summary is machine-generated.

Researchers developed a simple method to create polymer nanocubes from poly(ε-caprolactone) (PCL). This technique yields numerous 70 nm single-crystal nanocubes, offering new possibilities for nanoparticle fabrication.

More Related Videos

Using Polystyrene-block-polyacrylic acid-coated Metal Nanoparticles as Monomers for Their Homo- and Co-polymerization
09:02

Using Polystyrene-block-polyacrylic acid-coated Metal Nanoparticles as Monomers for Their Homo- and Co-polymerization

Published on: July 9, 2015

12.4K
Functionalization of Single-walled Carbon Nanotubes with Thermo-reversible Block Copolymers and Characterization by Small-angle Neutron Scattering
09:12

Functionalization of Single-walled Carbon Nanotubes with Thermo-reversible Block Copolymers and Characterization by Small-angle Neutron Scattering

Published on: June 1, 2016

9.3K

Related Experiment Videos

Last Updated: Sep 22, 2025

Synthesis of Monodisperse Cylindrical Nanoparticles via Crystallization-driven Self-assembly of Biodegradable Block Copolymers
11:42

Synthesis of Monodisperse Cylindrical Nanoparticles via Crystallization-driven Self-assembly of Biodegradable Block Copolymers

Published on: June 20, 2019

7.9K
Using Polystyrene-block-polyacrylic acid-coated Metal Nanoparticles as Monomers for Their Homo- and Co-polymerization
09:02

Using Polystyrene-block-polyacrylic acid-coated Metal Nanoparticles as Monomers for Their Homo- and Co-polymerization

Published on: July 9, 2015

12.4K
Functionalization of Single-walled Carbon Nanotubes with Thermo-reversible Block Copolymers and Characterization by Small-angle Neutron Scattering
09:12

Functionalization of Single-walled Carbon Nanotubes with Thermo-reversible Block Copolymers and Characterization by Small-angle Neutron Scattering

Published on: June 1, 2016

9.3K

Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Nanotechnology

Background:

  • Polymeric nanoparticles are crucial in various applications.
  • Achieving non-spherical polymer nanostructures like nanocubes is challenging.
  • Poly(ε-caprolactone) (PCL) is a biodegradable polymer with potential for advanced material applications.

Purpose of the Study:

  • To develop a facile and economical method for preparing poly(ε-caprolactone) (PCL) nanocubes.
  • To characterize the morphology, size, and crystallinity of the obtained PCL nanocubes.
  • To investigate the mechanism of nanocube formation and factors influencing their yield and size.

Main Methods:

  • Thermal treatment of poly(ε-caprolactone) (PCL) thin films on glass slides or silicon wafers.
  • Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM) for morphological analysis.
  • High-Resolution Transmission Electron Microscopy (HRTEM) and Fast Fourier Transform (FFT) for crystallographic analysis.

Main Results:

  • Successfully prepared PCL nanocubes with a size of approximately 70 nm.
  • Achieved high yields of nanocubes (up to ~130,000 per cm²).
  • Confirmed the particles were single nanocrystals using HRTEM and FFT.
  • Demonstrated that nanocube size and yield are controllable via polymer solution concentration, architecture, and substrate.

Conclusions:

  • A novel and cost-effective method for fabricating polymer nanocubes from PCL was established.
  • The formation mechanism is proposed to involve dewetting and crystallization.
  • This work advances the understanding of PCL nucleation and crystal growth, and offers a new route for synthesizing nonspherical polymeric nanoparticles.