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Characteristics and Nomenclature of Copolymers01:24

Characteristics and Nomenclature of Copolymers

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Copolymers are the products obtained from the polymerization of multiple monomer species. So, in a polymer chain itself, there can be multiple repeating units that come from different monomers. The process of synthesizing a polymer from different monomer species is called copolymerization. When two monomers are involved, the polymer is known as a bipolymer. Polymers with three and four monomers are termed terpolymers and quaterpolymers, respectively. Figure 1 depicts the copolymerization of...
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Polymer Classification: Architecture01:14

Polymer Classification: Architecture

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Polymers are classified as linear or branched on the basis of their chain architecture. The polymer chains in linear polymers have a long chain-like structure with minimal to no branching at all. Even if a polymer features large substituent groups on the monomer, which appear as branches to the skeleton, it is not considered a branched polymer. A branched polymer contains secondary polymer chains that arise from the main polymer chain. The branching occurs when the polymer growth shifts from...
4.0K
Polymers02:34

Polymers

41.8K
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...
41.8K
Polymers02:34

Polymers

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23.4K
Step-Growth Polymerization: Overview01:03

Step-Growth Polymerization: Overview

4.5K
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...
4.5K
Characteristics and Nomenclature of Homopolymers01:00

Characteristics and Nomenclature of Homopolymers

4.2K
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.
4.2K

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

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複雑な二次構造を持つ超分子マルチブロック共ポリマー

Elizabeth Elacqua1, Kylie B Manning1, Diane S Lye1

  • 1Department of Chemistry and Molecular Design Institute, New York University , New York, New York 10003, United States.

Journal of the American Chemical Society
|August 24, 2017
PubMed
まとめ
この要約は機械生成です。

この研究は,直角組成を用いてタンパク質構造を模倣する新しい合成ポリマーを作成します. これらの高度な材料は 多様な二次構造を持つ複雑なポリマー構造の 精密な設計を可能にします

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

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Controlling the Size, Shape and Stability of Supramolecular Polymers in Water
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Controlling the Size, Shape and Stability of Supramolecular Polymers in Water

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Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives
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Synthesis of Monodisperse Cylindrical Nanoparticles via Crystallization-driven Self-assembly of Biodegradable Block Copolymers
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Controlling the Size, Shape and Stability of Supramolecular Polymers in Water
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科学分野:

  • ポリマー化学
  • 超分子化学
  • 材料科学

背景:

  • タンパク質は,機能のために多様な二次構造 (例えば,α-ヘリク,β-シート) を利用する.
  • 合成ポリマーには 通常このような複雑で定義された二次構造が欠けています
  • 合成材料でタンパク質の二次構造を模倣することは 重要な課題です

研究 の 目的:

  • 定義された二次構造を持つ主鎖の超分子ブロックコポリマーを設計する.
  • タンパク質α/βおよびα+βの合成模倣を開発する.
  • 正確なポリマー構造のための直角的自己組み立て戦略を活用する.

主な方法:

  • ヘテロテレケリックポリー (p-フェニレンビニレン) (PPVs) のためのイテラティブ・ワンポット・クロス・メタテシス・リング・オープニング・メタテシス・ポリメリゼーション (CM-ROMP).
  • 金属の協調と水素結合による正方形の自己組み立て
  • PPVの超分子組立は,螺旋およびコイル形成ポリマー (例えば,poly ((norbornene)) による.

主要な成果:

  • PPVを使用した平行および反平行πシート構造の成功合成.
  • 螺旋状やコイル状のポリマーモチーフとの高信頼性関連が実証されています.
  • ヘリックス・シート・ヘリックスとヘリックス・シート・コイル・アセンブリを,ヘリシティを損なうことなく達成した.
  • タンパク質二次構造の合成模倣を 自然にインスパイアした

結論:

  • メインチェーン・オートゴーナル・アセンブリは,多様な二次構造を持つマルチブロックコポリマー・スキャフォールドの設計を可能にします.
  • このアプローチにより,タンパク質の構造を模倣した合成材料の設計が可能です.
  • 開発された戦略は,タンパク質のような複雑さを持つ高度な機能的材料を作成するための経路を提供します.