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

You might also read

Related Articles

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

Sort by

Same author

Emerging cases of mucormycosis under COVID-19 pandemic in India: Misuse of antibiotics.

Drug development research·2021

Same author

Bracing NK cell based therapy to relegate pulmonary inflammation in COVID-19.

Heliyon·2021

Same author

A 2-fold Approach to Polyoma Virus (BK) Nephropathy in Kidney Transplants: Distinguishing Direct Virus Effects From Cognate T Cell-mediated Inflammation.

Transplantation·2021

Same author

Goniotomy for initial and re-surgery for childhood glaucoma in Northern India.

Indian journal of ophthalmology·2021

Same author

Analysis of the parental satisfaction for retinopathy of prematurity screening using binocular indirect ophthalmoscopy versus wide field retinal imaging.

Indian journal of ophthalmology·2021

Same author

Effects of curcumin-loaded poly(lactic-co-glycolic acid) nanoparticles in MDA-MB231 human breast cancer cells.

Nanomedicine (London, England)·2021

Same journal

Therapeutic potential of crude protein extracts from two Egyptian freshwater snails Lanistes carinatus and Bellamya unicolor.

Scientific reports·2026

Same journal

Microbial contamination of donor corneas and post-keratoplasty endophthalmitis: a comparison between Japanese and U.S. eye banks using cold storage.

Scientific reports·2026

Same journal

Prevalence and contributing factors of virological non-suppression among adult patients on first-line antiretroviral therapy in tertiary hospitals in Ethiopia.

Scientific reports·2026

Same journal

An in vitro comparison of color stability between alkasite and different restorative materials in various staining solutions.

Scientific reports·2026

Same journal

Toward accessible mRNA LNP formulation: systematic evaluation of mixing strategies and key parameters.

Scientific reports·2026

Same journal

A network analysis of personality traits, mentalizing, and psychological health in Chinese college students.

Scientific reports·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Dec 14, 2025

Nanosponge Tunability in Size and Crosslinking Density

Nanosponge Tunability in Size and Crosslinking Density

Published on: August 4, 2017

Tuning layered superstructures in precision polymers.

Varun Danke^1,2, Sophie Reimann³, Wolfgang H Binder³

¹Fraunhofer Institute for Microstructure of Materials and Systems IMWS, Walter-Hülse-Straße 1, 06120, Halle (Saale), Germany.

Scientific Reports

|July 23, 2020

Summary

This summary is machine-generated.

Controlling polymer superstructures is achieved by adjusting methylene sequence length in polymers with 2,6-diaminopyridine (DAP) groups. Shorter sequences create larger, highly ordered layered structures up to 110 nm.

More Related Videos

DNA Nanotubes as a Versatile Tool to Study Semiflexible Polymers

DNA Nanotubes as a Versatile Tool to Study Semiflexible Polymers

Published on: October 25, 2017

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Published on: July 5, 2019

Related Experiment Videos

Last Updated: Dec 14, 2025

Nanosponge Tunability in Size and Crosslinking Density

Nanosponge Tunability in Size and Crosslinking Density

Published on: August 4, 2017

DNA Nanotubes as a Versatile Tool to Study Semiflexible Polymers

DNA Nanotubes as a Versatile Tool to Study Semiflexible Polymers

Published on: October 25, 2017

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Published on: July 5, 2019

Area of Science:

Polymer Chemistry
Materials Science
Supramolecular Chemistry

Background:

Linear precision polymers with functional groups like 2,6-diaminopyridine (DAP) can form ordered superstructures.
The arrangement and properties of these superstructures are influenced by the polymer's chemical structure and processing conditions.

Purpose of the Study:

To investigate how varying the methylene sequence length between DAP groups affects the formation and characteristics of layered polymer superstructures.
To understand the underlying mechanisms controlling superstructure periodicity and coherence length.

Main Methods:

Synthesis of linear precision polymers with varying methylene sequence lengths and 2,6-diaminopyridine (DAP) functional groups.
Characterization of the resulting layered superstructures using techniques to determine periodicity and coherence length.
Development of a building block model to explain the observed structural features.

Main Results:

Polymers with shorter methylene sequences (16-18 units) exhibited layered superstructures with a three-monomeric unit periodicity and high coherence lengths up to 110 nm.
Polymers with longer methylene sequences (20 units) showed more conventional single-monomer layered structures.
The formation of different layered structures was dependent on crystallization conditions, methylene sequence length, and functional group type.

Conclusions:

Methylene sequence length is a critical parameter for controlling the self-assembly and periodicity of layered polymer superstructures.
A proposed building block model explains the formation of unusual three-monomeric unit periodicity.
The interplay between hydrogen bonding (DAP groups) and van der Waals forces (methylene groups) governs the observed superstructure diversity.