Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Polymers02:34

Polymers

41.0K
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...
41.0K
Polymers02:34

Polymers

23.3K
23.3K
Fineness of Cement01:15

Fineness of Cement

522
The fineness of cement directly influences the rate of hydration, as the hydration begins at the surface of the cement particles. In addition to hydration, the fineness of cement is vital for various properties of concrete including workability, gypsum requirement, and long-term behavior. The fineness of cement is represented in terms of the specific surface of cement which is typically measured in square meters per kilogram, with several methods available for this determination.
Direct...
522
Fineness Modulus01:19

Fineness Modulus

1.5K
The fineness modulus (FM) of aggregate is a numerical index that measures the coarseness or fineness of the particles. It is calculated by adding the cumulative percentages of aggregate retained on each of a specified series of sieves and dividing the sum by 100.
Consider performing sieve analysis on sand through a set of ASTM sieves. The weight of aggregate retained in each sieve and pan placed at the bottom is recorded, as given in Column B of Table 1.
To determine the fineness modulus of...
1.5K
Protein and Protein Structure02:15

Protein and Protein Structure

88.2K
Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Proteins may be structural, regulatory, contractile, or protective. They may serve in transport, storage, or membranes; or they may be toxins or enzymes. Their structures, like their functions, vary greatly. They are all, however, amino acid polymers arranged in a linear sequence.
A protein's shape is critical to its function. For example, an enzyme...
88.2K
Antibody Structure01:10

Antibody Structure

65.6K
Overview
Antibodies, also known as immunoglobulins (Ig), are essential players of the adaptive immune system. These antigen-binding proteins are produced by B cells and make up 20 percent of the total blood plasma by weight. In mammals, antibodies fall into five different classes, which each elicits a different biological response upon antigen binding.
The Y-Shaped Structure of Antibodies Consists of Four Polypeptide Chains
Antibodies consist of four polypeptide chains: two identical heavy...
65.6K

You might also read

Related Articles

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

Sort by
Same author

Investigating the Fracture Initiation Mechanisms of High-Angle Well Fracturing in Deep Offshore Reservoirs.

ACS omega·2026
Same author

Thickening Supercritical CO₂ with π-Stacked Co-Polymers: Molecular Insights into the Role of Intermolecular Interaction.

Polymers·2019
Same author

[Association between genetic polymorphism of tumor necrosis factor and chronic severe hepatitis B in patients].

Zhonghua yi xue za zhi·2007
Same author

In vivo translational inaccuracy in Escherichia coli: missense reporting using extremely low activity mutants of Vibrio harveyi luciferase.

Biochemistry·2007
Same author

[Construction of recombinant adenovirus vector expressing extracellular domain of TbetaR-II-RANTES fusion gene and its anti-tumor effects].

Zhonghua zhong liu za zhi [Chinese journal of oncology]·2007
Same author

[Characteristics, evolution and variation of M genes of human avian H5N1 strains in Guangdong].

Bing du xue bao = Chinese journal of virology·2007

Related Experiment Video

Updated: Feb 7, 2026

Depolymerizable Olefinic Polymers Based on Fused-Ring Cyclooctene Monomers
08:12

Depolymerizable Olefinic Polymers Based on Fused-Ring Cyclooctene Monomers

Published on: December 16, 2022

3.9K

Ultrasensitive (Co)polymers Based on Poly(methacrylamide) Structure with Fining-Tunable pH Responsive Value.

Haiming Fan1, Po Li2, Wei Li3

  • 1Shandong Provincial Key Laboratory of Oilfield Chemistry, School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China. Haimingfan@126.com.

Molecules (Basel, Switzerland)
|August 1, 2018
PubMed
Summary

Novel pH-responsive copolymers were developed using 2-(dialkylamino)ethyl methacrylate monomers. These ultrasensitive polymers can be fine-tuned for biomedical applications by adjusting the hydrophobic monomer ratio.

Keywords:
fine-tuningpH responsivephase transitionpoly(methacrylamide)s

More Related Videos

A Polymer-based Piezoelectric Vibration Energy Harvester with a 3D Meshed-Core Structure
09:51

A Polymer-based Piezoelectric Vibration Energy Harvester with a 3D Meshed-Core Structure

Published on: February 20, 2019

25.9K
Vapor Phase Deposition of Electroactive Poly(3,4-ethylenedioxythiophene) onto Electrospun Commodity Polymer Nanofibers
08:28

Vapor Phase Deposition of Electroactive Poly(3,4-ethylenedioxythiophene) onto Electrospun Commodity Polymer Nanofibers

Published on: March 7, 2025

1.9K

Related Experiment Videos

Last Updated: Feb 7, 2026

Depolymerizable Olefinic Polymers Based on Fused-Ring Cyclooctene Monomers
08:12

Depolymerizable Olefinic Polymers Based on Fused-Ring Cyclooctene Monomers

Published on: December 16, 2022

3.9K
A Polymer-based Piezoelectric Vibration Energy Harvester with a 3D Meshed-Core Structure
09:51

A Polymer-based Piezoelectric Vibration Energy Harvester with a 3D Meshed-Core Structure

Published on: February 20, 2019

25.9K
Vapor Phase Deposition of Electroactive Poly(3,4-ethylenedioxythiophene) onto Electrospun Commodity Polymer Nanofibers
08:28

Vapor Phase Deposition of Electroactive Poly(3,4-ethylenedioxythiophene) onto Electrospun Commodity Polymer Nanofibers

Published on: March 7, 2025

1.9K

Area of Science:

  • Polymer Chemistry
  • Materials Science
  • Biomedical Engineering

Background:

  • pH-responsive polymers are crucial for targeted drug delivery and diagnostics.
  • Developing polymers with tunable pH sensitivity remains a key challenge in materials science.

Purpose of the Study:

  • To synthesize novel pH-responsive copolymers with tunable sensitivity.
  • To investigate the structure-property relationships of these copolymers in aqueous solutions.

Main Methods:

  • Free radical polymerization of 2-(dialkylamino)ethyl methacrylate monomers.
  • Characterization using titration, transmittance measurements, and proton nuclear magnetic resonance (NMR) spectroscopy.
  • Tuning pH responsiveness by adjusting the hydrophobic monomer ratio.

Main Results:

  • Synthesized pH-responsive copolymers exhibiting tunable sensitivity from pH 7.4 to 4.8.
  • Demonstrated pH-dependent solubility: polymers soluble at low pH and aggregated at higher pH values (above pKa).
  • Confirmed the role of electrostatic repulsion and hydrophobic effects in pH-responsive behavior.

Conclusions:

  • Developed a novel approach for creating ultrasensitive, tunable pH-responsive polymers.
  • These copolymers show significant potential for advanced biomedical material applications.
  • The fine-tuning capability offers precise control for targeted delivery systems.