Related Experiment Video
Updated: Jun 28, 2025
09:34
Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly
Published on: February 6, 2020
7.2K
Post-Assembly Polymerization of Discrete Anion-Coordinated Triple Helicate
Jie Zhao1, Ruying Lv2, Fen Zhao2
1School of Chemistry and Chemical Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055.
Chempluschem
|April 9, 2024
Summary
Researchers developed a novel self-healing gel using anion-coordination-driven assembly and post-assembly polymerization. This adaptable material demonstrates excellent surface compatibility, expanding possibilities for smart gel applications.
Area of Science:
- Supramolecular Chemistry
- Materials Science
- Polymer Chemistry
Background:
- Hierarchical self-assembly is key for anion-coordination-driven gels.
- Post-assembly modification offers efficient functionalization but hasn't been applied to these gels.
Purpose of the Study:
- To report the first anion-coordination-driven gel material utilizing post-assembly polymerization.
- To explore the properties and applications of this novel gel.
Main Methods:
- Construction of anion-coordination-driven gel via post-assembly polymerization.
- Characterization of the gel's self-healing and surface compatibility properties.
Main Results:
- Successfully synthesized an anion-coordination-driven gel cross-linked by an 'aniono' triple helicate.
- The gel exhibits self-healing capabilities.
- Demonstrated excellent adhesion to diverse surfaces (glass, rubber, leaf, PP, metal).
Conclusions:
- Post-assembly polymerization is a viable and efficient strategy for creating functional anion-coordination-driven supramolecular materials.
- The developed viscoelastic gel expands the toolkit for constructing advanced smart materials.
Related Concept Videos
00:57Cationic Chain-Growth Polymerization: Mechanism
2.3K
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...
2.3K
01:04Anionic Chain-Growth Polymerization: Mechanism
2.0K
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...
2.0K
01:03Step-Growth Polymerization: Overview
3.5K
Step-growth or condensation polymerization is a stepwise reaction of bi or multifunctional monomers to form long-chain polymers. As all the monomers are reactive, most of the monomers are consumed at the early stages of the reaction to form small chains of reactive oligomers, which then combine to form long polymer chains in the late stages. Hence, the reaction has to proceed for a long time to achieve high molecular weight polymers.
Many natural and synthetic polymers are produced by...
Many natural and synthetic polymers are produced by...
3.5K
01:20Anionic Chain-Growth Polymerization: Overview
2.1K
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,...
2.1K
01:09Radical Chain-Growth Polymerization: Mechanism
2.5K
The radical chain-growth polymerization mechanism consists of three steps: initiation, propagation, and termination of polymerization. The polymerization initiates when a free radical generated from the radical initiator adds to the unsaturated bond in the monomer. The unpaired electron of the free radical and one π electron in the unsaturated bond creates a σ bond between the free radical and the monomer. As a result, the other π electron in the unsaturated bond converts this...
2.5K
01:17Ziegler–Natta Chain-Growth Polymerization: Overview
3.3K
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...
3.3K