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

Measuring Reaction Rates

Measuring Reaction Rates

Polarimetry finds application in chemical kinetics to measure the concentration and reaction kinetics of optically active substances during a chemical reaction. Optically active substances have the capability of rotating the plane of polarization of linearly polarized light passing through them—a feature called optical rotation. Optical activity is attributed to the molecular structure of substances. Normal monochromatic light is unpolarized and possesses oscillations of the electrical...

You might also read

Related Articles

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

Sort by

Same author

Development of zwitterionic hydrogel thin film coatings of cochlear implant electrode arrays that reduce intracochlear inflammation and electrode impedance.

Hearing research·2026

Same author

The Evaluation of (1<i>R</i>,4<i>R</i>,7<i>R</i>,10<i>R</i>)-α,α',α″,α‴-Tetramethyl-1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic Acid (DOTMA) as a Chelator for Zirconium-89.

Molecules (Basel, Switzerland)·2025

Same author

Structure-reactivity based control of radical-mediated degradation in thiol-Michael hydrogels.

Journal of materials chemistry. B·2025

Same author

Dimensionality-Controlled Confinement Effects for Tunable Optoelectronic Properties in Quasi-1D Hybrid Perovskites.

ACS nano·2025

Same author

Enhancing Mucus Flow and Clearance by Grafting Zwitterionic Hydrogel Films to Luminal Surfaces.

Laryngoscope investigative otolaryngology·2025

Same author

Inositol trisphosphate and ryanodine receptor signaling distinctly regulate neurite pathfinding in response to engineered micropatterned surfaces.

PloS one·2024

Same journal

Multitargeted Degradation of Cell Surface Receptors by Modular Glyco-Nanosheets.

ACS macro letters·2026

Same journal

Vinyl Ether Maleic Anhydride Copolymers: Efficient and Reusable Sorbents for Removing Heavy Metals from Water.

ACS macro letters·2026

Same journal

Topology-Preserving Elastic Deformation Augmentation Enables Robust Defect Detection in Data-Scarce Industrial Imagery.

ACS macro letters·2026

Same journal

Flexible Porous Organic Polymers with α,β-Enone-Linkage via AlCl<sub>3</sub>-Catalyzed Horner-Wadsworth-Emmons Polymerization for Pd Recovery.

ACS macro letters·2026

Same journal

Light-Controlled Topology Switching Enables Continuous Modulation of Thermally Induced Phase Behavior in Polymer Solutions.

ACS macro letters·2026

Same journal

Correction to "Light-Induced Transformation from Covalent to Supramolecular Polymer Networks".

ACS macro letters·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Sep 19, 2025

In situ Photo-rheology Monitors Viscoelastic Changes in Photo-responsive Polymer Networks

In situ Photo-rheology Monitors Viscoelastic Changes in Photo-responsive Polymer Networks

Published on: June 20, 2025

In Situ NMR to Monitor Bulk Photopolymerization Kinetics.

Luis L Jessen¹, Kameron R Hansen¹, George B Crull²

¹Department of Chemical and Biochemical Engineering, The University of Iowa, Iowa City, Iowa 52242, United States.

ACS Macro Letters

|June 4, 2025

Summary

This summary is machine-generated.

This study introduces an in situ NMR spectroscopy method for accurately measuring photopolymerization kinetics. This technique offers high spectral resolution, enabling precise monitoring of bulk polymerization reactions and material properties.

More Related Videos

Controlled Photoredox Ring-Opening Polymerization of O-Carboxyanhydrides Mediated by Ni/Zn Complexes

Controlled Photoredox Ring-Opening Polymerization of O-Carboxyanhydrides Mediated by Ni/Zn Complexes

Published on: November 21, 2017

Real-time Monitoring of Reactions Performed Using Continuous-flow Processing: The Preparation of 3-Acetylcoumarin as an Example

Real-time Monitoring of Reactions Performed Using Continuous-flow Processing: The Preparation of 3-Acetylcoumarin as an Example

Published on: November 18, 2015

Related Experiment Videos

Last Updated: Sep 19, 2025

In situ Photo-rheology Monitors Viscoelastic Changes in Photo-responsive Polymer Networks

In situ Photo-rheology Monitors Viscoelastic Changes in Photo-responsive Polymer Networks

Published on: June 20, 2025

Controlled Photoredox Ring-Opening Polymerization of O-Carboxyanhydrides Mediated by Ni/Zn Complexes

Controlled Photoredox Ring-Opening Polymerization of O-Carboxyanhydrides Mediated by Ni/Zn Complexes

Published on: November 21, 2017

Real-time Monitoring of Reactions Performed Using Continuous-flow Processing: The Preparation of 3-Acetylcoumarin as an Example

Real-time Monitoring of Reactions Performed Using Continuous-flow Processing: The Preparation of 3-Acetylcoumarin as an Example

Published on: November 18, 2015

Area of Science:

Polymer Chemistry
Spectroscopy
Materials Science

Background:

Precise measurement of photopolymerization kinetics is crucial for controlling material properties.
Traditional methods like real-time Fourier-transform infrared spectroscopy (RT-IR) have limitations in spectral resolution and broadening mechanisms.

Purpose of the Study:

To present an in situ NMR spectroscopy technique for monitoring bulk photopolymerization.
To demonstrate the utility of this technique for determining kinetic parameters and monomer conversion.

Main Methods:

Utilized in situ NMR spectroscopy with a capillary insert to isolate the bulk reaction system.
Employed LED-coupled fiber optics for photoexcitation of the polymer system.
Determined relative rate constants (kp') and ultimate monomer conversion for various systems.

Main Results:

Successfully monitored bulk photopolymerization reactions using in situ NMR.
Achieved high spectral resolution and rich chemical information for kinetic analysis.
Quantified kinetic data for neat hexyl acrylate, isobornyl methacrylate, N,N-dimethylacrylamide, and a cross-linked system.

Conclusions:

In situ NMR photopolymerization is a valuable complementary technique to conventional methods like RT-IR.
This method provides precise kinetic data for bulk photopolymer materials.
The technique facilitates better control over curing characteristics and material properties.