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Related Concept Videos

Polymers02:34

Polymers

36.0K
The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the...
36.0K
Olefin Metathesis Polymerization: Overview01:13

Olefin Metathesis Polymerization: Overview

2.2K
Recently, the development of olefin metathesis polymerization advanced the field of polymer synthesis. Simply put, the reorganization of substituents on their double bonds between two olefins in the presence of a catalyst is known as the olefin metathesis reaction. The use of metathesis reaction for polymer synthesis is called olefin metathesis polymerization.
Ruthenium-based Grubbs catalyst is the most commonly used catalyst for olefin metathesis polymerization. Grubbs catalyst consists...
2.2K
Olefin Metathesis Polymerization: Ring-Opening Metathesis Polymerization (ROMP)01:16

Olefin Metathesis Polymerization: Ring-Opening Metathesis Polymerization (ROMP)

2.7K
Ring-opening metathesis polymerization or ROMP involves strained cycloalkenes as starting materials. The mechanism of ROMP proceeds by reacting cycloalkene with Grubbs catalyst to give metallacyclobutane intermediate which undergoes a ring-opening reaction to form new carbene. The new carbene reacts with another molecule of cycloalkene. Repetition of these steps leads to the formation of an unsaturated open-chain polymer product. All these steps are reversible, however, relieving the ring...
2.7K
Anionic Chain-Growth Polymerization: Overview01:20

Anionic 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
Characteristics and Nomenclature of Homopolymers01:00

Characteristics and Nomenclature of Homopolymers

3.1K
Polymers that are made up of identical monomer units are called homopolymers. Only one repeating unit is involved in the construction of the homopolymer structure. For example, as depicted in Figure 1, polypropylene is a homopolymer constituted of propylene monomers. Here, the only repeating unit in the polymer chain is propylene.
3.1K

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Electroactive Polymer Nanoparticles Exhibiting Photothermal Properties
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Porphyrin-based supramolecular polymers.

Hosoowi Lee1, Hyunjun Park1, Du Yeol Ryu2

  • 1Department of Chemistry, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, 03722, Seoul, Republic of Korea. wdjang@yonsei.ac.kr.

Chemical Society Reviews
|February 14, 2023
PubMed
Summary
This summary is machine-generated.

Porphyrin derivatives form one-dimensional supramolecular polymers through various interactions. This review details their design, growth, and applications in areas like energy and biomedicine.

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Area of Science:

  • Supramolecular Chemistry
  • Materials Science
  • Organic Chemistry

Background:

  • Porphyrin derivatives are vital in biological systems, involved in oxygen transport, photosynthesis, and catalysis.
  • Their unique chemical and physical properties make them attractive research subjects for diverse scientific disciplines.
  • Porphyrin derivatives serve as versatile building blocks for supramolecular polymers due to their inherent C4 symmetry.

Purpose of the Study:

  • To review the fabrication of porphyrin-based supramolecular polymers.
  • To highlight novel discoveries in the growth mechanisms of these polymers.
  • To consolidate knowledge on design concepts, growth, analysis, and applications.

Main Methods:

  • Summarizing design concepts for porphyrin-based supramolecular polymers.
  • Reviewing the growth mechanisms and analytical techniques.
  • Categorizing polymers based on interaction types: hydrogen bonding, metal coordination, host-guest complexation.

Main Results:

  • Porphyrin derivatives enable the symmetrical introduction of self-assembling motifs.
  • One-dimensional fibrous supramolecular polymer structures are the primary focus.
  • Diverse interaction types facilitate the formation of these complex structures.

Conclusions:

  • Porphyrin-based supramolecular polymers offer a versatile platform for advanced materials.
  • Their applications span molecular recognition, energy conversion, sensors, and biomedicine.
  • Future perspectives focus on further exploration of their unique properties and applications.