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

UV–Vis Spectroscopy of Conjugated Systems

UV–Vis Spectroscopy of Conjugated Systems

Organic compounds with conjugated double bonds show strong absorption features in the UV–visible region of the electromagnetic spectrum attributed to π&VeryThinSpace;→&VeryThinSpace;π* electronic excitations. Generally, a UV–vis absorption spectrum is recorded as a plot of absorbance vs wavelength. The wavelength of maximum absorbance, which manifests as a peak in the absorption spectrum, is denoted as λmax.
One of the factors influencing λmax is the extent of conjugation in the...

Protein Dynamics in Living Cells

Protein Dynamics in Living Cells

Different fluorescence-based techniques are used to study the protein dynamics in living cells. These techniques include FRAP, FRET, and PET.
Fluorescent recovery after photobleaching (FRAP) is a fluorescent-protein-based detection technique used to quantify protein movement rates within the cell. This method exposes a small portion of the cell to an intense laser beam. The laser beam causes permanent photobleaching of the fluorophore-tagged proteins in the exposed region. As the bleached...

You might also read

Related Articles

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

Sort by

Same author

SELUN: a high-speed X-ray photon counting detector for coherent imaging applications.

Journal of synchrotron radiation·2025

Same author

Long-term trajectories of densely reported depressive symptoms during an extended period of the COVID-19 pandemic in Switzerland: Social worries matter.

Comprehensive psychiatry·2024

Same author

Defining infertility: a qualitative interview study of patients and physicians.

Journal of reproductive and infant psychology·2023

Same author

Highly luminescent scintillating hetero-ligand MOF nanocrystals with engineered Stokes shift for photonic applications.

Nature communications·2022

Same author

Synergies of THESEUS with the large facilities of the 2030s and guest observer opportunities.

Experimental astronomy·2022

Same author

Development and Validation of a Risk-Adapted Scoring Model for Metachronous Upper Tract Urothelial Carcinoma following Radical Cystectomy.

The Journal of urology·2021

Search research articles

Related Experiment Video

Updated: Jul 11, 2026

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level

Published on: September 26, 2016

Chromophore localization in conjugated polymers: molecular dynamics simulation.

S Grimm¹, D Tabatabai, A Scherer

¹Department of Chemistry and Biochemistry, Center for Nanoscience and Nanosystems Initiative Munich, Ludwig Maximilians University Munich, 81337 Munich, Germany.

The Journal of Physical Chemistry. B

|October 6, 2007

Summary

Simulating poly(phenylene vinylene) at zero temperature shows delocalized chromophores. Finite temperature simulations reveal chromophore localization, matching experimental observations and highlighting temperature

More Related Videos

Monitoring the Effects of Illumination on the Structure of Conjugated Polymer Gels Using Neutron Scattering

Monitoring the Effects of Illumination on the Structure of Conjugated Polymer Gels Using Neutron Scattering

Published on: December 21, 2017

Fabrication and Characterization of Disordered Polymer Optical Fibers for Transverse Anderson Localization of Light

Fabrication and Characterization of Disordered Polymer Optical Fibers for Transverse Anderson Localization of Light

Published on: July 29, 2013

Related Experiment Videos

Last Updated: Jul 11, 2026

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level

Published on: September 26, 2016

Monitoring the Effects of Illumination on the Structure of Conjugated Polymer Gels Using Neutron Scattering

Monitoring the Effects of Illumination on the Structure of Conjugated Polymer Gels Using Neutron Scattering

Published on: December 21, 2017

Fabrication and Characterization of Disordered Polymer Optical Fibers for Transverse Anderson Localization of Light

Fabrication and Characterization of Disordered Polymer Optical Fibers for Transverse Anderson Localization of Light

Published on: July 29, 2013

Area of Science:

Polymer science
Quantum chemistry
Materials science

Background:

Undistorted poly(phenylene vinylene) chains exhibit chromophores delocalized across the entire polymer at absolute zero.
Experimental data suggests chromophore localization in these polymers.

Purpose of the Study:

To investigate the influence of temperature on chromophore localization in poly(phenylene vinylene) chains.
To reconcile theoretical calculations with experimental findings regarding chromophore behavior.

Main Methods:

Quantum chemical calculations were employed to model undistorted polymer chains at zero temperature.
Molecular dynamics simulations were utilized to simulate the system at finite temperatures.
The dependence of chromophore localization on temperature was systematically investigated.

Main Results:

Quantum chemical calculations at zero temperature predicted fully delocalized chromophores.
Molecular dynamics simulations at finite temperatures demonstrated chromophore localization.
The degree of localization was found to be temperature-dependent, aligning with experimental observations.

Conclusions:

Finite temperature is crucial for achieving realistic chromophore localization in poly(phenylene vinylene).
Molecular dynamics simulations provide a valuable tool for understanding polymer behavior under varying thermal conditions.
The study bridges the gap between theoretical predictions and experimental realities in polymer photophysics.