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

1° Amines to Diazonium or Aryldiazonium Salts: Diazotization with NaNO2 Overview01:26

1° Amines to Diazonium or Aryldiazonium Salts: Diazotization with NaNO2 Overview

3.8K
Nitrous acid and nitric acids are two types of acids containing nitrogen, among which nitrous acid is weaker than nitric acid. Nitrous acid with a pKa value of 3.37 ionizes in water to give a nitrite ion and the hydronium ion.
The nitrous acid is unstable. Hence, it is formed in situ from a solution of sodium nitrite and cold aqueous acids such as hydrochloric or sulfuric acid. In an acidic solution, the –OH group of nitrous acid undergoes protonation to give oxonium ion, followed by...
3.8K
1° Amines to Diazonium or Aryldiazonium Salts: Diazotization with NaNO2 Mechanism01:37

1° Amines to Diazonium or Aryldiazonium Salts: Diazotization with NaNO2 Mechanism

4.7K
Nitrous acid is a relatively weak and unstable acid prepared in situ by the reaction of sodium nitrite and cold, dilute hydrochloric acid. In an acidic solution, the nitrous acid undergoes protonation when it loses water to form a nitrosonium ion—an electrophile. Nitrous acid reacts with primary amines to give diazonium salts. The reaction is called diazotization of primary amines.
4.7K
Aryldiazonium Salts to Azo Dyes: Diazo Coupling01:11

Aryldiazonium Salts to Azo Dyes: Diazo Coupling

3.5K
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 para...
3.5K
Diazonium Group Substitution: –OH and –H01:19

Diazonium Group Substitution: –OH and –H

3.2K
Nitrous acid, a weak acid, is prepared in situ via the reaction of sodium nitrite with a strong acid under cold conditions. This nitrous acid prepared in situ reacts with primary arylamines to form arenediazonium salts. Such reactions are known as diazotization reactions. As shown in Figure 1, the formation of arenediazonium salts begins with the decomposition of nitrous acid in an acidic solution to give nitrosonium ions.
3.2K

You might also read

Related Articles

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

Sort by
Same author

Motor-free hip exosuit via high-output fibrous dielectric elastomer actuators.

Science advances·2026
Same author

Carbon-based nanomaterials with higher specific surface area: more expensive but more effective antimicrobials.

Journal of materials chemistry. B·2025
Same author

Intrinsically Conductive, Optical Transparent, and Underwater Self-healing Ionogel with On-Demand Bonding Triggered by Skin Temperature.

Small (Weinheim an der Bergstrasse, Germany)·2025
Same author

Making large-size fail-safe steel by deformation-assisted tempering process.

Scientific reports·2024
Same author

Graphene Oxide Inhibits Calcium Carbonate Nucleation.

Langmuir : the ACS journal of surfaces and colloids·2024
Same author

Effect of Nb on the Damping Property and Pseudoelasticity of a Porous Ni-Ti Shape Memory Alloy.

Materials (Basel, Switzerland)·2023

Related Experiment Video

Updated: Dec 31, 2025

A Polyaniline-based Sensor of Nucleic Acids
07:58

A Polyaniline-based Sensor of Nucleic Acids

Published on: November 1, 2016

8.4K

Triazine-Based Two-Dimensional Organic Polymer for Selective NO2 Sensing with Excellent Performance.

Kai Yang, Wenjing Yuan, Zhongqiu Hua1

  • 1Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering , Hebei University of Technology , Tianjin 300401 , China.

ACS Applied Materials & Interfaces
|January 1, 2020
PubMed
Summary

Researchers developed a novel organic 2D polymer for highly sensitive and fast gas sensing. This new material, triazine-based 2D polymer (T-2DP), shows great promise for next-generation wearable electronics and environmental monitoring.

Keywords:
covalent triazine frameworkgas sensingorganic synthesissuper-fast responsetriazine based two-dimensional polymer

More Related Videos

Using Cyclic Voltammetry, UV-Vis-NIR, and EPR Spectroelectrochemistry to Analyze Organic Compounds
11:44

Using Cyclic Voltammetry, UV-Vis-NIR, and EPR Spectroelectrochemistry to Analyze Organic Compounds

Published on: October 18, 2018

27.3K
Author Spotlight: Development and Application of SERS Flexible Substrates Using Synthesized AgNPs
03:33

Author Spotlight: Development and Application of SERS Flexible Substrates Using Synthesized AgNPs

Published on: November 17, 2023

3.1K

Related Experiment Videos

Last Updated: Dec 31, 2025

A Polyaniline-based Sensor of Nucleic Acids
07:58

A Polyaniline-based Sensor of Nucleic Acids

Published on: November 1, 2016

8.4K
Using Cyclic Voltammetry, UV-Vis-NIR, and EPR Spectroelectrochemistry to Analyze Organic Compounds
11:44

Using Cyclic Voltammetry, UV-Vis-NIR, and EPR Spectroelectrochemistry to Analyze Organic Compounds

Published on: October 18, 2018

27.3K
Author Spotlight: Development and Application of SERS Flexible Substrates Using Synthesized AgNPs
03:33

Author Spotlight: Development and Application of SERS Flexible Substrates Using Synthesized AgNPs

Published on: November 17, 2023

3.1K

Area of Science:

  • Materials Science
  • Nanotechnology
  • Chemical Sensing

Background:

  • Practical gas sensors require high sensitivity, rapid response, selectivity, and room-temperature operation.
  • Conventional metal oxide semiconductors and inorganic 2D polymers often fail to meet these demanding requirements.

Purpose of the Study:

  • To demonstrate an organic 2D polymer derived from a covalent triazine framework (CTF) for superior gas sensing.
  • To evaluate the gas sensing performance of the triazine-based 2D polymer (T-2DP) for nitrogen dioxide (NO2) detection.

Main Methods:

  • Synthesis of a nanoscale, porous organic 2D polymer (T-2DP) from a CTF.
  • Experimental evaluation of T-2DP's gas sensing properties, including sensitivity, response/recovery times, and selectivity.
  • Fabrication of a flexible NO2 chemiresistor for wearable electronics application.

Main Results:

  • T-2DP exhibited selective NO2 recognition with ultrahigh sensitivity (452.6 ppm⁻¹), surpassing other 2D nanomaterials and its CTF matrix.
  • Achieved superfast (35-47 s) and fully reversible sensing at room temperature.
  • Demonstrated potential for integration into wearable electronics via a flexible NO2 chemiresistor.

Conclusions:

  • Organic 2D polymers offer a promising new avenue for designing high-performance gas sensing materials.
  • T-2DP presents a viable candidate for next-generation wearable electronic devices requiring sensitive and rapid gas detection.