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

IR Spectroscopy: Hooke's Law Approximation of Molecular Vibration01:16

IR Spectroscopy: Hooke's Law Approximation of Molecular Vibration

1.3K
A covalently bonded heteronuclear diatomic molecule can be modeled as two vibrating masses connected by a spring. The vibrational frequency of the bond can be expressed using an equation derived from Hooke's law, which describes how the force applied to stretch or compress a spring is proportional to the displacement of the spring. In this case, the atoms behave like masses, and the bond acts like a spring.
According to Hooke's law, the vibrational frequency is directly proportional to...
1.3K
π Electron Effects on Chemical Shift: Overview01:27

π Electron Effects on Chemical Shift: Overview

1.1K
An applied magnetic field causes loosely bound π-electrons in organic molecules to circulate, producing a local or induced diamagnetic field over a large spatial volume. As the molecules tumble in solution, the field generated by π-electrons in spherical substituents results in a zero net field. However, the net field generated by π-electrons in non-spherical substituents is not zero. The effect of this induced field depends on the orientation of the molecule with respect to B0,...
1.1K
Energy Bands in Solids01:01

Energy Bands in Solids

817
Isolated atoms have discrete energy levels that are well described by the Bohr model. And, it quantifies the energy of an electron in a hydrogen atom as En. Higher quantum numbers 'n' yield less negative, closer electron energy levels.
 Band Formation:
When atoms are brought close together, as in a solid, these discrete energy levels begin to split due to the overlap of electron orbitals from adjacent atoms. This split occurs because of the Pauli exclusion principle, which states...
817
UV–Vis Spectroscopy: Molecular Electronic Transitions01:16

UV–Vis Spectroscopy: Molecular Electronic Transitions

1.4K
In Ultraviolet–Visible (UV–Vis) spectroscopy, the absorption of electromagnetic radiation is used to probe the electronic structure of molecules. This technique provides insights into molecular electronic transitions, particularly the movement of electrons between different molecular orbitals. Radiation is absorbed if the energy of the electromagnetic radiation passing through the molecule is precisely equal to the energy difference between the excited and ground states. During this...
1.4K
Energy Associated With a Charge Distribution01:21

Energy Associated With a Charge Distribution

1.5K
The work done to bring a charge through a distance r is given by the potential difference between the initial and the final position. To assemble a collection of point charges, the total work done can be expressed in terms of the product of each pair of charges divided by their separation distance, defined with respect to a suitable origin. Solving this expression gives the energy stored in a point charge distribution.
1.5K
Spin–Spin Coupling Constant: Overview01:08

Spin–Spin Coupling Constant: Overview

904
In bromoethane, the three methyl protons are coupled to the two methylene protons that are three bonds away. In accordance with the n+1 rule, the signal from the methyl protons is split into three peaks with 1:2:1 relative intensities. The methylene protons appear as a quartet, with the relative intensities of 1:3:3:1.
Qualitatively, any spin plus-half nucleus polarizes the spins of its electrons to the minus-half state. Consequently, the paired electron in the hydrogen–carbon bond must...
904

You might also read

Related Articles

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

Sort by
Same author

Time-Reversal Symmetry-Protected Coherent Control of Ultracold Molecular Collisions.

The journal of physical chemistry letters·2025
Same author

Machine Learning Optimization of Non-Kasha Behavior and of Transient Dynamics in Model Retinal Isomerization.

The journal of physical chemistry letters·2024
Same author

Population Oscillations and Ubiquitous Coherences in Multilevel Quantum Systems Driven by Incoherent Radiation.

The journal of physical chemistry letters·2024
Same author

Interference is in the eye of the beholder: Application to the coherent control of collisional processes.

The Journal of chemical physics·2024
Same author

Quantum to Classical Cavity Chemistry Electrodynamics.

The journal of physical chemistry letters·2023
Same author

Signatures of Non-universal Quantum Dynamics of Ultracold Chemical Reactions of Polar Alkali Dimer Molecules with Alkali Metal Atoms: Li(<sup>2</sup>S) + NaLi(<i>a</i><sup>3</sup>Σ<sup>+</sup>) → Na(<sup>2</sup>S) + Li<sub>2</sub>(<i>a</i><sup>3</sup>Σ<sub></sub><sup>+</sup>).

The journal of physical chemistry letters·2023

Related Experiment Video

Updated: Jun 19, 2025

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
10:40

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

Published on: June 28, 2016

7.5K

Frequency-Dependent Vibronic Effects in Steady State Energy Transport.

Leonardo F Calderón1,2, Paul Brumer1

  • 1Chemical Physics Theory Group, Department of Chemistry, and Center for Quantum Information and Quantum Control, University of Toronto, Toronto, Ontario M5S 3H6, Canada.

The Journal of Physical Chemistry. B
|July 25, 2024
PubMed
Summary

Vibrational frequencies in light-harvesting systems do not significantly enhance energy transport in natural nonequilibrium states. Optimizing energy transfer may involve increasing harvesting time at the reaction center.

More Related Videos

Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids
08:04

Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids

Published on: May 27, 2020

8.4K
Measurement of Coherence Decay in GaMnAs Using Femtosecond Four-wave Mixing
15:58

Measurement of Coherence Decay in GaMnAs Using Femtosecond Four-wave Mixing

Published on: December 3, 2013

5.8K

Related Experiment Videos

Last Updated: Jun 19, 2025

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
10:40

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

Published on: June 28, 2016

7.5K
Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids
08:04

Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids

Published on: May 27, 2020

8.4K
Measurement of Coherence Decay in GaMnAs Using Femtosecond Four-wave Mixing
15:58

Measurement of Coherence Decay in GaMnAs Using Femtosecond Four-wave Mixing

Published on: December 3, 2013

5.8K

Area of Science:

  • Photosynthesis
  • Biophysics
  • Quantum Biology

Background:

  • Natural light-harvesting systems utilize electronic and vibrational energy transfer.
  • Previous research suggested vibrational frequency differences enhance energy transport.
  • The role of vibrational frequencies in nonequilibrium steady states remains unclear.

Purpose of the Study:

  • To analyze how intramolecular vibrational frequencies affect excitation energy transport.
  • To compare energy transport in nonequilibrium steady states versus equilibrium conditions.
  • To investigate mechanisms for optimizing energy transfer in natural light-harvesting.

Main Methods:

  • Theoretical analysis of excitation energy transport.
  • Modeling of donor-acceptor vibrational frequencies.
  • Simulation of nonequilibrium steady states and equilibrium cases.
  • Inclusion of biologically relevant parameters for photosynthetic complexes.

Main Results:

  • In equilibrium, higher acceptor vibrational frequencies increase acceptor population.
  • This increase is negligible in the nonequilibrium steady state.
  • Vibrational frequency differences do not significantly enhance energy transport in natural light-harvesting under incoherent excitation.
  • Harvesting time at the reaction center is identified as a potential optimization mechanism.

Conclusions:

  • Intramolecular vibrational frequencies have a limited impact on energy transport efficiency in natural light-harvesting nonequilibrium steady states.
  • Optimizing energy transfer may depend on factors beyond vibrational frequency matching, such as extended harvesting times.
  • Findings provide insight into the dynamics of natural light-harvesting complexes.