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Related Concept Videos

Aryldiazonium Salts to Azo Dyes: Diazo Coupling01:11

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The reaction of weakly electrophilic aryldiazonium (also called arenediazonium) salts with highly activated aromatic compounds leads to the formation of products with an —N=N— link, called an azo linkage. This reaction, presented in Figure 1, is known as diazo coupling and occurs without the loss of the nitrogen atoms of the aryldiazonium salt. Highly activated aromatic compounds such as phenols or arylamines favor the diazo coupling reaction. The coupling generally occurs at the...
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The Hinsberg test is a method to identify primary, secondary and tertiary amines, named after its pioneer, Oscar Hinsberg. Here, amines are treated with benzenesulfonyl chloride, also known as the Hinsberg reagent, in the presence of an excess of aqueous base, followed by acidification. Based on the nature of the amines, different changes are observed.
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Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
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Qualitative Identification of Carboxylic Acids, Boronic Acids, and Amines Using Cruciform Fluorophores
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Sulfonamides as Optical Chemosensors.

Madeeha Batool1, Zartashia Afzal1, Hafiz Muhammad Junaid1

  • 1School of Chemistry, University of the Punjab, Lahore, Pakistan.

Critical Reviews in Analytical Chemistry
|August 4, 2022
PubMed
Summary
This summary is machine-generated.

Sulfonamides are versatile chemosensors that optically detect ionic species through various binding interactions. Their cost-effectiveness and green nature make them valuable tools for analytical chemists.

Keywords:
Sulfonamidecolorimetic sensingfluorescent sensingnaked eye sensingoptical sensing

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Area of Science:

  • Analytical Chemistry
  • Chemical Sensing

Background:

  • Sulfonamides exhibit versatile binding capabilities with ionic species.
  • These interactions result in detectable optical signals (UV-Vis, fluorescence).
  • Sulfonamides are recognized for being inexpensive, robust, and environmentally friendly.

Purpose of the Study:

  • To review the application of sulfonamides as optical chemosensors.
  • To highlight their utility in detecting various ionic species.

Main Methods:

  • Review of literature on sulfonamide-based chemosensors.
  • Analysis of sensing mechanisms (complexation, charge transfer, proton transfer).
  • Examination of optical detection methods (UV-Vis, fluorescence spectroscopy).

Main Results:

  • Sulfonamides demonstrate sensitivity and selectivity towards diverse anionic and cationic species.
  • Optical changes serve as reliable detection signals.
  • The review covers various applications in forensic, environmental, and biochemical analyses.

Conclusions:

  • Sulfonamides are effective and promising optical chemosensors for ionic species.
  • Their favorable properties support their widespread use in analytical laboratories.