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Related Concept Videos

Raman Spectroscopy: Overview01:20

Raman Spectroscopy: Overview

298
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...
298
Spectroscopy of Carboxylic Acid Derivatives01:26

Spectroscopy of Carboxylic Acid Derivatives

2.2K
Infrared spectroscopy is primarily used to determine the types of bonds and functional groups. In carboxylic acid derivatives, a typical carbonyl bond absorption is observed around 1650–1850 cm−1. For esters, the absorption is recorded at around 1740 cm−1, while acid halides show the absorption at about 1800 cm−1. Another acid derivative, the acid anhydrides, exhibit two carbonyl absorption around 1760 cm−1 and 1820 cm−1, arising from the symmetrical and...
2.2K
NMR Spectroscopy of Benzene Derivatives01:34

NMR Spectroscopy of Benzene Derivatives

7.6K
Simple unsubstituted benzene has six aromatic protons, all chemically equivalent. Therefore, benzene exhibits only a singlet peak at δ 7.3 ppm in the 1H NMR spectrum. The observed shift is far downfield because the aromatic ring current strongly deshields the protons. Any substitution on the benzene ring makes the aromatic protons nonequivalent, and the protons split each other. The peak is, therefore, no longer a singlet and the splitting pattern and their associated coupling...
7.6K
¹H NMR of Conformationally Flexible Molecules: Temporal Resolution00:52

¹H NMR of Conformationally Flexible Molecules: Temporal Resolution

800
At room temperature, the chair conformer of cyclohexane undergoes rapid ring flipping between two equivalent chair conformers at a rate of approximately 105 times per second. These two chair conformers are in equilibrium. The rapid ring flipping results in the interconversion of the axial proton to an equatorial proton and an equatorial to the axial proton. Such interconversions are too rapid and cannot be detected on the NMR timescale. Hence, the NMR spectrometer cannot distinguish between the...
800
UV–Vis Spectroscopy: Woodward–Fieser Rules01:29

UV–Vis Spectroscopy: Woodward–Fieser Rules

23.7K
UV–Visible absorption spectra of conjugated dienes arise from the lowest energy π → π* transitions. The light-absorbing part of the molecule is called the chromophore, and the substituents directly attached to the chromophore are called auxochromes. A strong correlation exists between the absorption maxima, λmax, and the structure of a conjugated π system. The Woodward–Fieser rules predict the value of λmax for a given...
23.7K
¹H NMR of Conformationally Flexible Molecules: Variable-Temperature NMR01:15

¹H NMR of Conformationally Flexible Molecules: Variable-Temperature NMR

1.0K
The axial and equatorial protons in cyclohexane can be distinguished by performing a variable-temperature NMR experiment. In this process, except for one proton, the remaining eleven protons are replaced by deuterium. The deuterium substitution avoids the possible peak splitting caused by the spin-spin coupling between the adjacent protons. The remaining proton flips between the axial and equatorial positions.
1.0K

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Related Experiment Video

Updated: May 28, 2025

Preparation and Characterization of C60/Graphene Hybrid Nanostructures
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Preparation and Characterization of C60/Graphene Hybrid Nanostructures

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Raman Spectroscopy of Fullerenes: From C60 to Functionalized Derivatives.

Yifan Qin1,2, Jilian Xu1,2, Zhewen Liang1,2

  • 1State Key Laboratory of Luminescence Science and Technology, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China.

Molecules (Basel, Switzerland)
|February 13, 2025
PubMed
Summary
This summary is machine-generated.

Raman spectroscopy is a powerful tool for studying fullerenes and their derivatives. Advanced techniques like SERS and TERS provide high sensitivity and resolution for detailed structural and property analysis.

Keywords:
RamanSERSTERSfullerenefullerene derivatives

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Area of Science:

  • Materials Science
  • Spectroscopy
  • Nanotechnology

Background:

  • Fullerenes, a unique allotrope of carbon, are extensively studied for their diverse applications.
  • Raman spectroscopy is a key non-destructive technique for analyzing molecular vibrations and structures.

Purpose of the Study:

  • To review the application of Raman spectroscopy in characterizing fullerenes and their derivatives.
  • To highlight advanced Raman techniques for enhanced fullerene analysis.

Main Methods:

  • Utilizing Raman spectroscopy to probe vibrational properties of fullerenes.
  • Employing enhanced Raman spectroscopy, SERS, and TERS for high-sensitivity characterization.
  • Analyzing structural and electronic changes due to functionalization and environmental factors.

Main Results:

  • Raman spectroscopy reveals structural and physicochemical characteristics of various fullerenes.
  • Functionalization and environmental conditions (solvents, temperature) impact fullerene properties.
  • Advanced Raman methods offer high sensitivity and spatial resolution for detailed analysis.

Conclusions:

  • Raman spectroscopy is indispensable for fullerene research, providing deep insights.
  • Advanced Raman techniques significantly expand the scope and detail of fullerene characterization.
  • This review underscores the utility of Raman spectroscopy in advancing fullerene science.