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

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,...
Micelles01:30

Micelles

Micelle formation is an intricate process that hinges on the properties of amphiphilic or amphipathic molecules and the conditions of the system in which they are found. Amphiphilic molecules, which have both hydrophilic (water-attracting) and hydrophobic (water-repelling) parts, play a critical role in this process.In aqueous environments, these molecules arrange themselves such that their hydrophilic heads are turned towards the water phase, while their hydrophobic tails are oriented away...
Ionic Crystal Structures02:42

Ionic Crystal Structures

Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
Aromatic Hydrocarbon Anions: Structural Overview01:18

Aromatic Hydrocarbon Anions: Structural Overview

Neutral hydrocarbons like cyclopentadiene with an odd number of carbon atoms and one intervening CH2 group in the ring are not aromatic. Cyclopentadiene with 4 π electrons does not satisfy the 4n + 2 π electron rule. Additionally, the intervening CH2 group is sp3 hybridized and lacks a vacant p orbital, thereby interrupting the overlap of p orbitals in a continuous manner and preventing the delocalization of π electrons throughout the ring.
Due to the absence of continuous overlap of p...
Anionic Chain-Growth Polymerization: Mechanism01:04

Anionic Chain-Growth Polymerization: Mechanism

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 acceptor.
Aromatic Hydrocarbon Cations: Structural Overview01:18

Aromatic Hydrocarbon Cations: Structural Overview

Cycloheptatriene is a neutral monocyclic unsaturated hydrocarbon that consists of an odd number of carbon atoms and an intervening sp3 carbon in the ring. The three double bonds in the ring correspond to 6 π electrons, which is a Huckel number, and therefore satisfies the criteria of 4n + 2 π electrons. However, the intervening sp3 carbon disrupts the continuous overlap of p orbitals. As a result, cycloheptatriene is not aromatic.
Removing one hydrogen from the intervening CH2 group with both...

You might also read

Related Articles

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

Sort by
Same author

Botryolides F and G from the Fungus <i>Bartalinia robillardoides</i> with Anthelmintic Activity.

Journal of natural products·2026
Same author

Design, synthesis, molecular modeling and anti-cancer activity of novel fluorinated naphtho[2,3-<i>b</i>]thiophene-4,9-dione derivatives.

RSC advances·2026
Same author

Mild PIFA-mediated synthesis of benzo[4,5]thiazolo[3,2-<i>a</i>]indoles <i>via</i> oxidative cyclization.

Organic & biomolecular chemistry·2026
Same author

Improved hydrolysis of piperacillin by OXA-48-like R214G variants, a selective advantage under piperacillin-tazobactam exposure.

Antimicrobial agents and chemotherapy·2026
Same author

Base-Promoted Cascade Multicomponent Access to Azatrithiathiophthenes from Cinnamonitriles, Sulfur and Active Methylhetarenes.

Organic letters·2026
Same author

Extended Fused Carbazole-BODIPY, High Brightness NIR Organic Dyes.

Angewandte Chemie (International ed. in English)·2026

Related Experiment Video

Updated: Jun 21, 2026

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
06:44

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding

Published on: March 24, 2018

Ionic liquid crystals formed by self-assembly around an anionic anthracene core.

Jean-Hubert Olivier1, Franck Camerel, Joaquín Barberá

  • 1Laboratoire de Chimie Organique et Spectroscopies Avancées (LCOSA), Ecole Européenne de Chimie, Polymères et Matériaux, CNRS, 25 rue Becquerel, 67087 Strasbourg Cedex 02, France.

Chemistry (Weinheim an Der Bergstrasse, Germany)
|July 14, 2009
PubMed
Summary

New luminescent mesogenic materials were created using ionic self-assembly. These stable materials exhibit columnar mesophases and maintain anthracene

More Related Videos

Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives
09:22

Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives

Published on: February 7, 2017

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

Related Experiment Videos

Last Updated: Jun 21, 2026

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
06:44

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding

Published on: March 24, 2018

Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives
09:22

Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives

Published on: February 7, 2017

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

Area of Science:

  • Materials Science
  • Supramolecular Chemistry
  • Organic Chemistry

Background:

  • Development of novel functional materials with tunable properties is crucial.
  • Mesogenic materials exhibiting luminescence are of significant interest for advanced applications.
  • Ionic self-assembly offers a versatile route for constructing complex molecular architectures.

Purpose of the Study:

  • To design and synthesize modular, mesogenic complexes based on anthracene-2,6-disulfonate and functionalized imidazolium cations.
  • To investigate the self-assembly behavior and mesomorphic properties of these novel complexes.
  • To characterize the luminescence and aggregation behavior of the anthracene core within the mesophase.

Main Methods:

  • Synthesis of anthracene-2,6-disulfonate and trialkoxybenzyl-functionalised imidazolium cations.
  • Crystallization studies with alkylammonium ions, including crystal structure determination.
  • Polarizing optical microscopy and X-ray scattering for mesophase identification.
  • Differential scanning calorimetry (DSC) for thermal analysis of mesomorphic behavior.
  • Fluorescence spectroscopy to study luminescence and aggregate formation.

Main Results:

  • Successful synthesis of modular mesogenic complexes with a rigid anthracene core and flexible imidazolium cations.
  • Identification of columnar mesophases formed by the dianion and cations, stable up to 200°C.
  • Crystal structure revealed intercalation of paraffin chains between anthracene moieties.
  • Anthracene luminescence is preserved in the mesophase, with evidence of J-aggregate formation.

Conclusions:

  • The designed complexes exhibit stable, luminescent mesomorphic properties.
  • Ionic self-assembly provides an effective strategy for engineering these functional materials.
  • The materials demonstrate potential for applications requiring luminescence and ordered structures.