Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Polymer Classification: Architecture

Polymer Classification: Architecture

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...

Characteristics and Nomenclature of Copolymers

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...

Radical Chain-Growth Polymerization: Chain Branching

Radical Chain-Growth Polymerization: Chain Branching

The skeletal structure of polymers synthesized via radical polymerization is always branched. For example, the polymerization of ethylene by radical polymerization results in a low-density grade of polyethylene with a heavily branched skeletal structure. Here, the radical site abstracts hydrogen from the growing chain, and the radical site shifts from the end (a primary carbon center) to anywhere within the growing chain (a secondary carbon center). Consequently, the part of the chain from the...

Polymers

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,...

Characteristics and Nomenclature of Homopolymers

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.

Anionic Chain-Growth Polymerization: Overview

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,...

You might also read

Related Articles

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

Sort by

Same author

Vertically stacked immobilized photocatalyst devices towards land-efficient solar hydrogen production.

Nature communications·2026

Same author

Future directions and emerging trends of sustainable energy harvesting: innovations in photovoltaic and thermoelectric systems.

RSC advances·2026

Same author

Factors associated with hospital transport in emergency medical services-attended out-of-hospital cardiac arrest.

Resuscitation·2026

Same author

The Impact of Insomnia on Dementia Risk in Hypertensive Individuals.

In vivo (Athens, Greece)·2026

Same author

Bifidobacterium breve promotes growth and lipid alteration in Trichomonas vaginalis transiently through transcriptomic reprogramming.

Scientific reports·2026

Same author

Beyond Cartilage-Inspired Supramolecular Polyurethane for Adaptive Impact-Resistant Protection with Robustness, Self-Healing, and Recyclability.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026

Search research articles

Related Experiment Video

Updated: Jun 21, 2026

Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly

Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly

Published on: February 6, 2020

Polymeric ladderphanes.

Chih-Ming Chou¹, Shern-Long Lee, Chih-Hsien Chen

¹Department of Chemistry, National Taiwan University, Taipei, Taiwan 106.

Journal of the American Chemical Society

|August 14, 2009

Summary

This summary is machine-generated.

Researchers synthesized novel polymeric ladderphanes with unique double-stranded skeletons and oligoaryl linkers. These advanced polymers exhibit distinct photophysical properties and self-assemble into ordered 2D arrays, showcasing their potential in materials science.

More Related Videos

Stabilizing Hepatocellular Phenotype Using Optimized Synthetic Surfaces

Stabilizing Hepatocellular Phenotype Using Optimized Synthetic Surfaces

Published on: September 26, 2014

Generating a Fractal Microstructure of Laminin-111 to Signal to Cells

Generating a Fractal Microstructure of Laminin-111 to Signal to Cells

Published on: September 28, 2020

Related Experiment Videos

Last Updated: Jun 21, 2026

Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly

Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly

Published on: February 6, 2020

Stabilizing Hepatocellular Phenotype Using Optimized Synthetic Surfaces

Stabilizing Hepatocellular Phenotype Using Optimized Synthetic Surfaces

Published on: September 26, 2014

Generating a Fractal Microstructure of Laminin-111 to Signal to Cells

Generating a Fractal Microstructure of Laminin-111 to Signal to Cells

Published on: September 28, 2020

Area of Science:

Polymer Chemistry
Materials Science
Supramolecular Chemistry

Background:

Polymeric ladderphanes represent a novel class of macromolecules.
Understanding their structure-property relationships is crucial for advanced materials development.

Purpose of the Study:

To synthesize and characterize new polymeric ladderphanes with double-stranded polybinorbornene skeletons and multilayer planar oligoaryl linkers.
To investigate the photophysical properties and self-assembly behavior of these novel polymers.

Main Methods:

Synthesis of polymeric ladderphanes.
Spectroscopic techniques for structural determination (e.g., NMR, UV-Vis).
Photophysical studies including time-resolved fluorescence spectroscopy.
Scanning tunneling microscopy (STM) for morphological analysis.

Main Results:

Successful synthesis of polymeric ladderphanes with defined structures.
Strong interactions observed between chromophore linkers, leading to characteristic photophysical phenomena like Soret band splitting, fluorescence quenching, and excimer emission.
Polymers 12b and d displayed ladder-like morphology and formed two-dimensional ordered supramolecular assemblies on graphite surfaces.

Conclusions:

Polymeric ladderphanes exhibit unique photophysical properties driven by linker interactions.
These polymers demonstrate self-assembly capabilities, forming ordered supramolecular structures.
The findings open avenues for designing functional polymers with tailored optical and self-assembly characteristics.