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Related Concept Videos

UV–Vis Spectroscopy: Molecular Electronic Transitions01:16

UV–Vis Spectroscopy: Molecular Electronic Transitions

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 process,...
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Updated: Jun 23, 2026

Scanning-probe Single-electron Capacitance Spectroscopy
10:53

Scanning-probe Single-electron Capacitance Spectroscopy

Published on: July 30, 2013

Two-dimensional electronic spectroscopy with a continuum probe.

Patrick F Tekavec1, Jeffrey A Myers, Kristin L M Lewis

  • 1Department of Physics and Biophysics, University of Michigan, Ann Arbor, Michigan 48109, USA.

Optics Letters
|May 5, 2009
PubMed
Summary
This summary is machine-generated.

We developed a new 2D Fourier transform electronic spectroscopy method using a continuum probe. This technique reveals vibrational wavepacket dynamics and vibronic cross peaks in dye systems.

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Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations
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Scanning-probe Single-electron Capacitance Spectroscopy
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Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations
13:56

Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations

Published on: October 12, 2019

Area of Science:

  • Physical Chemistry
  • Spectroscopy
  • Chemical Physics

Background:

  • Two-dimensional electronic spectroscopy (2D ES) is a powerful technique for studying ultrafast dynamics.
  • Traditional 2D ES methods often have limited spectral coverage.
  • Broadband probing is essential for capturing complex electronic and vibrational coherences.

Purpose of the Study:

  • To develop and demonstrate a broadband 2D Fourier transform electronic spectroscopy method.
  • To probe vibrational wavepacket dynamics in a dye system.
  • To observe vibronic cross peaks in 2D electronic spectra.

Main Methods:

  • Utilized a pump-continuum probe setup.
  • Incorporated an acousto-optic pulse shaper in the pump arm.
  • Acquired 2D electronic spectra over a broad spectral range.

Main Results:

  • Successfully implemented 2D Fourier transform electronic spectroscopy with a continuum probe.
  • Observed vibrational wavepacket dynamics modulating peak shapes in the 2D spectra.
  • Identified and analyzed vibronic cross peaks due to the broad spectral coverage.

Conclusions:

  • The developed method provides enhanced spectral resolution for 2D electronic spectroscopy.
  • This technique is effective for studying coupled electronic-vibrational dynamics.
  • Broadband probing enables comprehensive analysis of molecular excited-state processes.