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

You might also read

Related Articles

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

Sort by
Same author

Transient Activation Windows Program Adaptive Photochemical Responses.

Angewandte Chemie (International ed. in English)·2026
Same author

From Dynamic Chirality to Stable Enantiomers: Conformational Locking via Synergistic Methylation and Macrocyclization.

ChemPlusChem·2026
Same author

Single-molecule electrical characterization of photoinduced aggregation evolution.

Nature communications·2026
Same author

Biomimetic Supramolecular Assemblies With Programmable Structural and Chiroptical Dynamics.

Angewandte Chemie (International ed. in English)·2026
Same author

Aromatic phosphonate-based luminophores: universal building blocks for ultralong room-temperature phosphorescence and multifunctional applications.

Chemical science·2026
Same author

Harmonizing High Phosphorescence Efficiency and Stretchability in Flexible Afterglow Materials Through Microphase Engineering.

Advanced materials (Deerfield Beach, Fla.)·2026

Related Experiment Video

Updated: Jan 5, 2026

Controlled Synthesis and Fluorescence Tracking of Highly Uniform PolyN-isopropylacrylamide Microgels
11:34

Controlled Synthesis and Fluorescence Tracking of Highly Uniform PolyN-isopropylacrylamide Microgels

Published on: September 8, 2016

10.7K

Measuring the Microphase Separation Scale of Polyurethanes with a Vibration-Induced Emission-Based Ratiometric

Yiyao Zhang1, Yiru Li1, Huan Wang1

  • 1Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering , East China University of Science & Technology , 130 Meilong Road , Shanghai 200237 , P. R. China.

ACS Applied Materials & Interfaces
|October 12, 2019
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel fluorimetry method using fluorescent rulers to measure polyurethane microphase separation. This technique monitors changes in polymer structure with temperature, offering a facile approach to understanding material properties.

Keywords:
fluorescent rulermicrophase separationpolyurethaneratiometricvibration-induced emission (VIE)

More Related Videos

In situ Photo-rheology Monitors Viscoelastic Changes in Photo-responsive Polymer Networks
07:14

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

Published on: June 20, 2025

778
Author Spotlight: Advances in Nanoscale Infrared Spectroscopy to Explore Multiphase Polymeric Systems
06:54

Author Spotlight: Advances in Nanoscale Infrared Spectroscopy to Explore Multiphase Polymeric Systems

Published on: June 23, 2023

1.3K

Related Experiment Videos

Last Updated: Jan 5, 2026

Controlled Synthesis and Fluorescence Tracking of Highly Uniform PolyN-isopropylacrylamide Microgels
11:34

Controlled Synthesis and Fluorescence Tracking of Highly Uniform PolyN-isopropylacrylamide Microgels

Published on: September 8, 2016

10.7K
In situ Photo-rheology Monitors Viscoelastic Changes in Photo-responsive Polymer Networks
07:14

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

Published on: June 20, 2025

778
Author Spotlight: Advances in Nanoscale Infrared Spectroscopy to Explore Multiphase Polymeric Systems
06:54

Author Spotlight: Advances in Nanoscale Infrared Spectroscopy to Explore Multiphase Polymeric Systems

Published on: June 23, 2023

1.3K

Area of Science:

  • Polymer Science
  • Materials Chemistry
  • Spectroscopy

Background:

  • Polyurethanes (PUs) exhibit unique mechanical properties due to microphase separation between soft and hard segments.
  • Understanding this microphase separation is crucial for PU performance but challenging due to complex internal structures.

Purpose of the Study:

  • To develop a facile method for measuring and monitoring microphase separation in polyurethanes.
  • To utilize novel fluorescent molecules as built-in "fluorescent rulers" to quantify microphase separation.

Main Methods:

  • Incorporation of N,N'-disubstituted-dihydrophenazine (DPAC) derivatives into polyurethane films.
  • Monitoring temperature-dependent fluorescence changes of DPAC within the PU matrix.
  • Validation using small-angle X-ray scattering (SAXS) analysis and polydisperse hard sphere model.

Main Results:

  • DPAC fluorescence intensity ratio correlated with temperature-induced changes in PU microphase separation.
  • SAXS data confirmed microstructural changes in the 0.02 to 0.15 Å-1 q-range with temperature variation.
  • A defined relationship was found between hard sphere volume fraction and fluorescence intensity ratio.

Conclusions:

  • DPAC derivatives serve as effective ratiometric fluorescent rulers for quantifying polyurethane microphase separation.
  • This fluorimetry method provides a novel and facile approach for in-situ monitoring of polymer microstructures.
  • The findings offer a new tool for tailoring polyurethane properties through controlled microphase separation.