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Related Concept Videos

IR Spectroscopy: Molecular Vibration Overview01:24

IR Spectroscopy: Molecular Vibration Overview

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When Infrared (IR) radiation passes through a covalently bonded molecule, the bonds transition from lower to higher vibrational levels. The fundamental vibrational motions that result in infrared absorption can be classified as stretching or bending vibrations.
Stretching vibrations are vibrational motions that occur along the bond line, changing the bond length or distance between two bonded atoms. They are further distinguished as symmetric or asymmetric. In symmetric stretching, the...
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Ultraviolet and Visible (UV–Vis) Spectroscopy: Overview01:02

Ultraviolet and Visible (UV–Vis) Spectroscopy: Overview

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Ultraviolet–visible (UV–visible or UV–Vis) spectroscopy is an analytical technique that investigates the interaction between matter and UV–Vis light within the electromagnetic spectrum. This method is widely used for its versatility, simplicity, and relatively quick data acquisition, making it valuable for both qualitative and quantitative analysis. When UV–Vis radiation passes through a material,  molecules absorb light depending on the energy required for...
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Applications of IR Spectroscopy: Overview01:11

Applications of IR Spectroscopy: Overview

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The non-destructive nature and ability to provide valuable chemical information make IR spectroscopy a versatile technique with broad applications in various scientific and industrial fields. IR spectroscopy is commonly used to identify and characterize organic and inorganic compounds. It provides information about the functional groups present in a molecule and the bonding between atoms. This helps in the structural elucidation of compounds during organic synthesis, pharmaceutical research,...
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Infrared (IR) Spectroscopy: Overview01:09

Infrared (IR) Spectroscopy: Overview

6.4K
When electromagnetic radiation passes through a material, atoms or molecules transition from a lower to a higher energy state by absorbing radiation corresponding to the energy difference between the two states. The absorption of infrared (IR) radiation causes transitions between vibrational energy levels in a molecule. Therefore, IR spectroscopy is a useful analytical tool for determining the molecular structure of molecules.
Different compounds display unique properties due to their...
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Raman Spectroscopy: Overview01:20

Raman Spectroscopy: Overview

2.1K
The underlying principle of Raman spectroscopy is based on the interaction between light and matter, specifically molecules' inelastic scattering of photons. When a monochromatic beam of light, typically from a laser source, interacts with a sample, most scattered light has the same frequency as the incident light. This is known as Rayleigh scattering.
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
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UV–Vis Spectroscopy: Molecular Electronic Transitions01:16

UV–Vis Spectroscopy: Molecular Electronic Transitions

3.3K
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...
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Related Experiment Video

Updated: Mar 10, 2026

A Multimodal Wide-Field Fourier-Transform Raman Microscope
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An Introduction to Coherent Multidimensional Spectroscopy.

Peter C Chen

    Applied Spectroscopy
    |December 13, 2016
    PubMed
    Summary
    This summary is machine-generated.

    Coherent multidimensional spectroscopy offers advanced optical analysis, analogous to nuclear magnetic resonance imaging. This technique enhances spectral resolution and reveals relationships between peaks for deeper scientific insight.

    Keywords:
    2D-IR3DTwo-dimensional infraredentanglementnonlinear spectroscopythree-dimensional

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    Area of Science:

    • Optics and Spectroscopy
    • Physical Chemistry

    Background:

    • Coherent multidimensional spectroscopy (CMD) is an advanced optical technique.
    • It serves as an optical analog to multidimensional nuclear magnetic resonance (NMR) imaging.
    • CMD techniques analyze optical signals based on multiple pulsed laser frequencies.

    Purpose of the Study:

    • To provide a general introduction to coherent multidimensional spectroscopy.
    • To offer an overview of current experimental approaches in CMD.
    • To discuss emerging developments in the field of CMD.

    Main Methods:

    • Utilizing pulsed laser frequencies to generate optical signals.
    • Collecting spectral data in either the frequency or time domain.
    • Analyzing the relationships between different spectral peaks.

    Main Results:

    • Improved spectral resolution and reduced spectral congestion.
    • Enhanced ability to investigate correlations between spectral features.
    • Demonstration of CMD's utility in complex spectral analysis.

    Conclusions:

    • Coherent multidimensional spectroscopy is a powerful tool for optical analysis.
    • The field is rapidly developing with new experimental approaches and applications.
    • CMD provides unique insights into molecular and material properties through spectral relationships.