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Related Concept Videos

Characteristics and Nomenclature of Copolymers01:24

Characteristics and Nomenclature of Copolymers

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...
Characteristics and Nomenclature of Homopolymers01:00

Characteristics and Nomenclature of Homopolymers

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.
Step-Growth Polymerization: Overview01:03

Step-Growth Polymerization: Overview

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...
Polymers02:34

Polymers

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 properties that they exhibit. Additionally,...
Polymers02:34

Polymers

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 properties that they exhibit. Additionally,...
Polymers02:34

Polymers

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 properties that they exhibit. Additionally,...

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Updated: Jun 20, 2026

Synthesis of Monodisperse Cylindrical Nanoparticles via Crystallization-driven Self-assembly of Biodegradable Block Copolymers
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Orthogonally self-assembled multifunctional block copolymers.

Ashootosh V Ambade1, Caroline Burd, Mary Nell Higley

  • 1Molecular Design Institute and Department of Chemistry, New York University, 100 Washington Square East, New York, NY 10003, USA.

Chemistry (Weinheim an Der Bergstrasse, Germany)
|September 24, 2009
PubMed
Summary
This summary is machine-generated.

Researchers created novel functional polymers using ring-opening metathesis polymerization (ROMP). These polymers self-assemble into complex block copolymers, mimicking natural structures with enhanced control over material design.

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Published on: June 1, 2016

Area of Science:

  • Polymer Chemistry
  • Materials Science
  • Supramolecular Chemistry

Background:

  • Ring-opening metathesis polymerization (ROMP) is a versatile method for synthesizing polymers.
  • Noncovalent interactions are crucial for self-assembly in biological systems.
  • Achieving precise control over polymer architecture and functionality remains a challenge.

Purpose of the Study:

  • To synthesize telechelic poly(norbornene) and poly(cyclooctene) homopolymers.
  • To functionalize these polymers and form block copolymers via noncovalent interactions.
  • To demonstrate the orthogonal self-assembly of side-chain and main-chain functionalities.

Main Methods:

  • Ring-opening metathesis polymerization (ROMP).
  • Functionalization of polymer side-chains and terminal ends.
  • Self-assembly of homopolymers into block copolymers.
  • (1)H NMR spectroscopy and isothermal titration calorimetry for characterization.

Main Results:

  • Successfully synthesized telechelic poly(norbornene) and poly(cyclooctene) homopolymers.
  • Achieved formation of side-chain-functionalized AB and ABA block copolymers through self-assembly.
  • Demonstrated orthogonal self-assembly of side-chain and main-chain interactions.
  • Created the first copolymers combining both side- and main-chain self-assembly.

Conclusions:

  • Developed a novel method for creating highly controlled, functional block copolymers.
  • The synthesized materials mimic dynamic self-assembly structures found in nature.
  • This work advances the design of synthetic materials with tunable properties and complex architectures.