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Related Concept Videos

Nucleophilic Aromatic Substitution of Aryldiazonium Salts: Aromatic SN101:14

Nucleophilic Aromatic Substitution of Aryldiazonium Salts: Aromatic SN1

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Treating arylamines with nitrous acid gives aryldiazonium salts that are effective substrates in nucleophilic aromatic substitution reactions. The diazonio group in these salts can be easily displaced by different nucleophiles, yielding a wide variety of substituted benzenes. The leaving group departs as nitrogen gas, and this easy elimination is the driving force for the substitution reaction.
In the Sandmeyer reaction, for example, the diazonio group is replaced by a chloro, bromo,...
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Functional Groups02:45

Functional Groups

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Functional groups are a group of atoms with characteristic properties, which when linked to the carbon skeleton of a molecule, alter the properties of that molecule. For example, the presence of certain functional groups on a molecule will make them hydrophilic, whereas others will make them hydrophobic. These functional groups are an indispensable part of organic chemistry and important components of biological molecules, such as carbohydrates, proteins, lipids, and nucleic acids. Each...
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Aromatic Compounds: Overview01:25

Aromatic Compounds: Overview

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In general, the term ‘aromatic’ indicates a pleasant smell or fragrance from fresh flowers, freshly prepared coffee, etc. In the early history of organic chemistry, many benzene derivatives were isolated from the pleasant odor oils of the plants. For example, vanillin was isolated from the oil of vanilla, methyl salicylate from the oil of wintergreen, and cinnamaldehyde from the oil of cinnamon. They all had a pleasant odor; hence the name aromatic was given.
In 1825, Faraday isolated...
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Basicity of Aromatic Amines01:18

Basicity of Aromatic Amines

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The basicity of aromatic amines is much weaker than that of aliphatic amines due to the involvement of the lone pair of electrons over the N atom in resonance with the aryl rings. Generally, the electron-donating ability of any substituents on the aryl ring of aromatic amines increases the basicity of the amine by increasing electron density, and hence the availability of lone pair on the nitrogen. On the other hand, electron-withdrawing functional groups on the aryl ring of amines decrease the...
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Nomenclature of Aromatic Compounds with a Single Substituent01:23

Nomenclature of Aromatic Compounds with a Single Substituent

10.0K
Benzene is the simplest aromatic hydrocarbon or arene. The IUPAC names for simple monosubstituted benzene derivatives are derived by adding the substituent's name as a prefix to the parent benzene. For example, halobenzene, where the halogen could be fluoro (F), chloro (Cl), bromo (Br), and iodo (I).
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Five-Membered Heterocyclic Aromatic Compounds: Overview01:13

Five-Membered Heterocyclic Aromatic Compounds: Overview

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Heterocyclic aromatic compounds are cyclic compounds that are aromatic and have one or more heteroatoms—atoms other than carbon, in the ring. Depending upon the number of atoms present in the ring, they can be either five or six-membered. Examples of five-membered heterocyclic aromatic compounds include pyrrole, furan, thiophene, and imidazole. Pyrrole consists of one nitrogen atom having one lone pair of electrons. Furan and thiophene have one oxygen and one sulfur heteroatom,...
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Bioorthogonal Chemical Imaging of Cell Metabolism Regulated by Aromatic Amino Acids
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Functional Aromatic Polyamides.

José A Reglero Ruiz1, Miriam Trigo-López2, Félix C García3

  • 1Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Plaza de Misael Bañuelos s/n, 09001 Burgos, Spain. jareglero@ubu.es.

Polymers
|April 11, 2019
PubMed
Summary

Aromatic polyamides, or aramids, are high-performance polymers with exceptional thermal and mechanical properties. Recent research focuses on leveraging these characteristics for advanced applications in transport, smart materials, and beyond.

Keywords:
advanced materialsaramidsaromatic polyamidesfunctional polymershigh-performance polymers

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Area of Science:

  • Polymer Science and Engineering
  • Materials Science
  • Organic Chemistry

Background:

  • Aromatic polyamides (aramids) are high-performance polymers known for exceptional thermal and mechanical properties.
  • These materials are commercially utilized in fibers for advanced composites, protective garments, and specialty paper.
  • Significant research has explored their potential in demanding applications.

Purpose of the Study:

  • To review the state-of-the-art in aromatic polyamide research over the past eight years.
  • To highlight advancements in utilizing aramid properties for novel applications.
  • To identify future research directions for enhanced material performance.

Main Methods:

  • Comprehensive literature review of scientific publications from the last 8 years.
  • Analysis of research trends in aramid polymer science and engineering.
  • Synthesis of information on commercial applications and emerging fields.

Main Results:

  • Aromatic polyamides exhibit superior thermal stability and mechanical strength.
  • Key applications include high-strength fibers for protective gear and advanced composites.
  • Emerging research areas focus on electroactive, optically active, and smart material functionalities.

Conclusions:

  • Aromatic polyamides remain a critical class of high-performance materials.
  • Continued research is expanding their utility into sophisticated technological domains.
  • Future developments aim to further enhance their already remarkable properties.