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

Search research articles

Related Experiment Video

Updated: May 16, 2026

Advances in Nanoscale Infrared Spectroscopy to Explore Multiphase Polymeric Systems

Advances in Nanoscale Infrared Spectroscopy to Explore Multiphase Polymeric Systems

Published on: June 23, 2023

Understanding Wavelength-Dependent Photopolymerizations via Nano-Second Resolved Transient Spectroscopy.

Jisu Kim^1,2,3,4, Sarah L Walden^1,5, Joshua A Carroll^1,2

¹School of Chemistry and Physics, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD 4000, Australia.

Journal of the American Chemical Society

|May 14, 2026

Summary

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

Uncovering Aggregation-Induced Emission in Carbon Dots for Color-Changing Hydrogels and Information Encryption.

Angewandte Chemie (International ed. in English)·2026

Same author

Macromolecules with Tunable Fluorescence via Photochemical Step-Growth Polymerization.

ACS macro letters·2026

Same author

Following the formation of single-chain nanoparticles generated by interblock crosslinking within diblock copolymers: a Monte Carlo simulation study with adjustable interaction strength between the blocks.

Soft matter·2026

Same author

Wavelength-Dependent 3D Printing: Introducing 3D Printed Action Plots.

Advanced materials (Deerfield Beach, Fla.)·2026

Same author

Wavelength-resolved heterodimer [2 + 2] photocycloadditions for reversible surface grafting.

Chemical science·2026

Same author

Solar Flow Synthesis of Polymer Nanoparticles: Scaling Local Experiments to Global Potential.

Angewandte Chemie (International ed. in English)·2026

Same journal

A Lithium Superionic Conductor Softened by Nonmetal-Chlorine Chemical Bonds.

Journal of the American Chemical Society·2026

Same journal

A Ferrocene Metal-Ligand Triplet Diradical with a Terminal Iminyl Group Discovered by Time-Resolved Mid-Infrared Spectroscopy.

Journal of the American Chemical Society·2026

Same journal

Regulating Li-Ion Transport via Solvent and Ion Clustering Using Ternary Salts in Nonfluorinated Solvents for Extended Cyclability of Zero-Excess Lithium-Metal Batteries.

Journal of the American Chemical Society·2026

Same journal

Terahertz-Field-Induced Dissociation of Frenkel Excitons in Organic Semiconductors.

Journal of the American Chemical Society·2026

Same journal

Interplay between Slow Chirality Inversion and Slow Guest Uptake in a Triple-Helical Closed-Cage Metallocryptand.

Journal of the American Chemical Society·2026

Same journal

Controlled Sulfane Sulfur Delivery via Allyl Disulfide Rearrangement-Mediated Thiosulfoxide Formation.

Journal of the American Chemical Society·2026

See all related articles

This summary is machine-generated.

Photoinitiator performance depends on more than just light absorption. This study reveals how excited-state dynamics and radical persistence influence polymerization efficiency across different wavelengths.

Area of Science:

Polymer Chemistry
Photochemistry
Materials Science

Background:

Wavelength-dependent photopolymerization studies show absorption spectra alone don't predict radical generation or monomer conversion.
High polymerization efficiencies are observed even when exciting photoinitiators in their weak absorption tails.
This suggests postexcitation processes significantly impact photoinitiator performance, challenging traditional evaluation methods based solely on spectral overlap and molar absorptivity.

Purpose of the Study:

Investigate the wavelength-dependent behavior of photoinitiators.
Utilize a type I germanium-based photoinitiator, Ivocerin (bis(4-methoxybenzoyl)diethylgermanium), as a model system.
Quantify the roles of radical formation probability and radical persistence in polymerization efficiency across the spectrum.

More Related Videos

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals

Published on: May 29, 2018

Related Experiment Videos

Last Updated: May 16, 2026

Advances in Nanoscale Infrared Spectroscopy to Explore Multiphase Polymeric Systems

Advances in Nanoscale Infrared Spectroscopy to Explore Multiphase Polymeric Systems

Published on: June 23, 2023

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals

Published on: May 29, 2018

Main Methods:

Combined steady-state monomer conversion analysis with time-resolved spectroscopy.
Employed kinetic modeling to analyze wavelength-dependent photopolymerization.
Investigated the transient excited-state dynamics of Ivocerin.

Main Results:

Demonstrated a direct correlation between Ivocerin's excited-state dynamics and its macroscopic polymerization efficiency.
Observed enhanced polymerization efficiency at longer wavelengths.
Identified the interplay of radical generation and lifetime as key factors for this enhanced efficiency.

Conclusions:

Postexcitation processes and radical dynamics are critical for understanding wavelength-dependent photopolymerization.
The study provides a mechanistic framework explaining discrepancies between molar absorptivity and reactivity.
This offers a more accurate approach to evaluating photoinitiator performance across various wavelengths.