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Related Concept Videos

Surface Active Agents01:27

Surface Active Agents

83
Surfactants, named for their behavior at interfaces, positively adsorb at the interfaces of two phases, reducing interfacial tension. Their versatility as emulsifiers, detergents, and foaming agents stems from this ability. Surfactants, often termed amphiphiles, share the property of amphipathy, with molecules having both hydrophilic and hydrophobic portions. The hydrophilic part is called the head, and the hydrophobic part, including an elongated alkyl substituent, forms the tail.Surfactants...
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Preparation and Reactions of Sulfides02:26

Preparation and Reactions of Sulfides

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Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
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Aldehydes and Ketones to Alkenes: Wittig Reaction Mechanism01:14

Aldehydes and Ketones to Alkenes: Wittig Reaction Mechanism

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The Wittig reaction, which converts aldehydes or ketones to alkenes using phosphorus ylides, proceeds through a nucleophilic addition‒elimination process.
The reaction begins with the nucleophilic addition between a phosphorus ylide and the carbonyl compound. Due to its carbanionic character,  phosphorus ylide acts as a strong nucleophile and attacks the electrophilic carbonyl group. This generates a charge-separated dipolar intermediate called betaine. The negatively charged oxygen atom and...
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Micelles01:30

Micelles

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Micelle formation is an intricate process that hinges on the properties of amphiphilic or amphipathic molecules and the conditions of the system in which they are found. Amphiphilic molecules, which have both hydrophilic (water-attracting) and hydrophobic (water-repelling) parts, play a critical role in this process.In aqueous environments, these molecules arrange themselves such that their hydrophilic heads are turned towards the water phase, while their hydrophobic tails are oriented away...
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Regioselectivity of Electrophilic Additions-Peroxide Effect02:35

Regioselectivity of Electrophilic Additions-Peroxide Effect

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In the presence of organic peroxides, the addition of hydrogen bromide to an alkene yields the isomer that is not predicted by Markovnikov’s rule. For example, the addition of hydrogen bromide to 2-methylpropene in the presence of peroxides gives 1-bromo-2-methylpropane. This addition reaction proceeds via a free radical mechanism, which reverses the regioselectivity. The free radical reaction mechanism involves three stages: initiation, propagation, and termination.
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Carboxylic Acids to Acid Chlorides01:18

Carboxylic Acids to Acid Chlorides

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Carboxylic acids react with SOCl2 or PCl5 to form acid chlorides. Amongst the carboxylic acid derivatives, acid chlorides are the most reactive and synthetically important derivatives. They are useful reagents for Friedel–Crafts acylation of some aromatic compounds.
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Related Experiment Video

Updated: Mar 25, 2026

Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of PhosphorusI
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Phosphine oxide surfactants revisited.

Cosima Stubenrauch1, Natalie Preisig1, Robert G Laughlin2

  • 1Institute of Physical Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany.

Advances in Colloid and Interface Science
|February 13, 2016
PubMed
Summary

This review covers alkyl dimethyl (C(n)DMPO) and alkyl diethyl (C(n)DEPO) phosphine oxide (PO) surfactants, detailing their synthesis, properties, and applications. These versatile PO surfactants offer excellent performance for various industrial uses.

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Area of Science:

  • Chemistry
  • Materials Science
  • Surface Science

Background:

  • Nonionic surfactants are crucial in various industrial applications.
  • Phosphine oxide (PO) surfactants, specifically alkyl dimethyl (C(n)DMPO) and alkyl diethyl (C(n)DEPO), possess unique properties.
  • A comprehensive understanding of these PO surfactants is needed.

Purpose of the Study:

  • To review current knowledge on C(n)DMPO and C(n)DEPO phosphine oxide surfactants.
  • To consolidate information on their synthesis, properties, and applications.
  • To encourage wider adoption of PO surfactants in academia and industry.

Main Methods:

  • Literature review of studies on PO surfactants.
  • Analysis of synthesis and general properties.
  • Examination of interfacial properties (surface tension, rheology, adsorption).
  • Review of studies on thin liquid films, foams, and self-assembly (liquid crystals, microemulsions).

Main Results:

  • Detailed overview of PO surfactant synthesis and general characteristics.
  • Comprehensive analysis of interfacial behavior, including surface tension and adsorption.
  • Discussion of PO surfactants' role in stabilizing thin liquid films and foams.
  • Exploration of PO surfactant self-assembly into lyotropic liquid crystals and microemulsions.

Conclusions:

  • PO surfactants exhibit a broad range of excellent properties.
  • These surfactants demonstrate significant potential in diverse applications.
  • Further research and industrial implementation of PO surfactants are encouraged.