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

Anionic Chain-Growth Polymerization: Overview01:20

Anionic Chain-Growth Polymerization: Overview

2.2K
The polymerization process that involves carbanion as an intermediate is called anionic polymerization. It is also a type of addition or chain-growth polymerization. Anionic polymerization gets initiated by a strong nucleophile such as an organolithium or a Grignard reagent. The most commonly used initiator for anionic polymerization is butyl lithium. Monomers involved in anionic polymerization must possess a vinyl group bonded to one or two electron-withdrawing groups. For instance,...
2.2K
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

You might also read

Related Articles

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

Sort by
Same author

Research on Density Prediction of Laser Powder Bed Fusion Process Parameters for IN718 Nickel-Based Superalloy Based on Machine Learning.

Materials (Basel, Switzerland)·2026
Same author

Permanently Reprocessable Highly Cross-Linked Thiourethane Networks Derived from Isocyanate-Reactive Amine Catalyst.

ACS applied polymer materials·2026
Same author

Switchable Pressure-Sensitive Adhesion in Nematic Side-Chain Liquid Crystal Elastomers.

Macromolecules·2026
Same author

Machine Learning-Based Fatigue Life Prediction for E36 Steel Welded Joints.

Materials (Basel, Switzerland)·2025
Same author

Free energy of self-avoiding polymer chain confined between parallel walls.

The Journal of chemical physics·2025
Same author

Stiffening Liquid Crystal Elastomers with Liquid Crystal Inclusions.

Advanced materials (Deerfield Beach, Fla.)·2025
Same journal

Nanopore sequencing with proteins: synchronization and dischronization of molecular dynamics simulations with laboratory and industrial developments.

Soft matter·2026
Same journal

Catanionics from biosurfactants and regular surfactants: miscibility and structure.

Soft matter·2026
Same journal

Adhesives with a thickness smaller than the fractocohesive length enhance adhesion.

Soft matter·2026
Same journal

Non-equilibrium phase transitions in hybrid Voronoi models of cell colonies.

Soft matter·2026
Same journal

Effects of methoxy substituents on self-assembly and gelation performance of benzamide-based organogelators.

Soft matter·2026
Same journal

Rheology of <i>Escherichia coli</i> suspensions with various bacterial morphologies and motion characteristics.

Soft matter·2026
See all related articles

Related Experiment Video

Updated: Sep 7, 2025

Synthesis of Programmable Main-chain Liquid-crystalline Elastomers Using a Two-stage Thiol-acrylate Reaction
11:17

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

Published on: January 19, 2016

22.0K

Thiol-acrylate side-chain liquid crystal elastomers.

Hongye Guo1, Mohand O Saed1, Eugene M Terentjev1

  • 1Cavendish Laboratory, University of Cambridge, J. J. Thomson Avenue, Cambridge, CB3 0HE, UK. emt1000@cam.ac.uk.

Soft Matter
|June 17, 2022
PubMed
Summary
This summary is machine-generated.

Liquid crystalline elastomers with smectic-A phase were synthesized using click chemistry. These materials exhibit shape-memory properties and unique semi-crystalline behaviors influenced by mesogen structure.

More Related Videos

Preparation of Monodomain Liquid Crystal Elastomers and Liquid Crystal Elastomer Nanocomposites
12:21

Preparation of Monodomain Liquid Crystal Elastomers and Liquid Crystal Elastomer Nanocomposites

Published on: February 6, 2016

12.8K
Microfluidic Preparation of Liquid Crystalline Elastomer Actuators
12:04

Microfluidic Preparation of Liquid Crystalline Elastomer Actuators

Published on: May 20, 2018

9.1K

Related Experiment Videos

Last Updated: Sep 7, 2025

Synthesis of Programmable Main-chain Liquid-crystalline Elastomers Using a Two-stage Thiol-acrylate Reaction
11:17

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

Published on: January 19, 2016

22.0K
Preparation of Monodomain Liquid Crystal Elastomers and Liquid Crystal Elastomer Nanocomposites
12:21

Preparation of Monodomain Liquid Crystal Elastomers and Liquid Crystal Elastomer Nanocomposites

Published on: February 6, 2016

12.8K
Microfluidic Preparation of Liquid Crystalline Elastomer Actuators
12:04

Microfluidic Preparation of Liquid Crystalline Elastomer Actuators

Published on: May 20, 2018

9.1K

Area of Science:

  • Polymer Chemistry
  • Materials Science
  • Liquid Crystals

Background:

  • Polysiloxane backbone polymers offer tunable properties.
  • Liquid crystalline elastomers (LCEs) combine polymer elasticity with liquid crystal order.
  • Click chemistry provides efficient routes for polymer functionalization.

Purpose of the Study:

  • To synthesize smectic-A liquid crystalline elastomers by grafting mesogenic groups onto a polysiloxane backbone.
  • To investigate the structure-property relationships of these LCEs based on varying mesogen structures.
  • To explore the shape-memory behavior and unique characteristics of the synthesized LCEs.

Main Methods:

  • Michael addition 'click' chemistry for polymer modification.
  • Synthesis of LCEs with acrylate-terminated mesogens and thiol-functionalized polysiloxane.
  • Characterization using X-ray diffraction, calorimetry, and dynamic mechanical analysis.

Main Results:

  • All synthesized LCEs exhibited the smectic-A phase.
  • Unusual semi-crystalline nature observed in LCEs with non-polar mesogens.
  • Polar mesogens showed side-by-side dimerization, increasing smectic layer spacing.
  • Shape-memory properties were confirmed.
  • Two distinct responses to uniaxial stretching were identified: Helfrich-Hurault texture and stripe domains.

Conclusions:

  • The molecular structure of mesogenic side groups significantly influences the structure and properties of smectic LCEs.
  • Mesogen dimerization plays a crucial role in layer spacing and material behavior.
  • The synthesized LCEs demonstrate tunable responses to mechanical stress, relevant for advanced material applications.