Search research articles

ACERCA DE JoVE

Visión General Liderazgo Blog Centro de Ayuda JoVE

AUTORES

Proceso de Publicación Consejo Editorial Alcance y Políticas Revisión por Pares Preguntas Frecuentes Enviar

BIBLIOTECARIOS

Testimonios Suscripciones Acceso Recursos Consejo Asesor de Bibliotecas Preguntas Frecuentes

INVESTIGACIÓN

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archivo

EDUCACIÓN

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Centro de Recursos para Profesores Sitio de Profesores

Términos y Condiciones de Uso

Política de Privacidad

Videos de Conceptos Relacionados

Van der Waals Interactions

Van der Waals Interactions

Atoms and molecules interact with each other through intermolecular forces. These electrostatic forces arise from attractive or repulsive interactions between particles with permanent, partial, or temporary charges. The intermolecular forces between neutral atoms and molecules are ion–dipole, dipole–dipole, and dispersion forces, collectively known as van der Waals forces.Polar molecules have a partial positive charge on one end and a partial negative charge on the other end of the molecule,...

Lewis Structures of Molecular Compounds and Polyatomic Ions

Lewis Structures of Molecular Compounds and Polyatomic Ions

To draw Lewis structures for complicated molecules and molecular ions, it is helpful to follow a step-by-step procedure as outlined:

Intermolecular Forces

Intermolecular Forces

Atoms and molecules interact through bonds (or forces): intramolecular and intermolecular. The forces are electrostatic as they arise from interactions (attractive or repulsive) between charged species (permanent, partial, or temporary charges) and exist with varying strengths between ions, polar, nonpolar, and neutral molecules. The different types of intermolecular forces are ion–dipole, dipole–dipole, hydrogen bonds, and dispersion; among these, dipole–dipole, hydrogen bonds, and dispersion...

Noncovalent Attractions in Biomolecules

Noncovalent Attractions in Biomolecules

Noncovalent attractions are associations within and between molecules that influence the shape and structural stability of complexes. These interactions differ from covalent bonding in that they do not involve sharing of electrons.
Four types of noncovalent interactions are hydrogen bonds, van der Waals forces, ionic bonds, and hydrophobic interactions.
Hydrogen bonding results from the electrostatic attraction of a hydrogen atom covalently bonded to a strong-electronegative atom like oxygen,...

Solubility

Solubility

Solution, Solubility, and Solubility Equilibrium
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules, atoms, and/or ions)...

Surface Active Agents

Surface Active Agents

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...

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por

Same author

How cation and diluent determine nanostructure in surface-active ionic liquids.

Journal of colloid and interface science·2026

Same author

Water doping sodium battery electrolyte controls nanostructure, interactions, and electrochemical properties.

Science advances·2026

Same author

Nanostructure of Polyoxometalate-Ionic Liquids: Effects of Anion Geometry and Cation Chain Length.

The journal of physical chemistry letters·2026

Same author

From Salt-in-Water to Water-in-Salt: How Ion Identity Governs Surfactant Self-Assembly in Salt-Water-Nonionic Surfactant Mixtures.

The journal of physical chemistry letters·2025

Same author

Electrochemistry and structure of locally concentrated surface-active ionic liquids.

Journal of colloid and interface science·2025

Same author

Surfactant self-assembly in water-in-salt electrolytes.

Journal of colloid and interface science·2025

Search research articles

Video Experimental Relacionado

Updated: Jul 14, 2026

A Technique to Functionalize and Self-assemble Macroscopic Nanoparticle-ligand Monolayer Films onto Template-free Substrates

A Technique to Functionalize and Self-assemble Macroscopic Nanoparticle-ligand Monolayer Films onto Template-free Substrates

Published on: May 9, 2014

El autoensamblaje de un tensioactivo no iónico en la interfaz líquido grafito/iónico.

Rob Atkin¹, Gregory G Warr

¹School of Chemistry, The University of Sydney, NSW 2006, Australia. r.atkin@chem.usyd.edu.au

Journal of the American Chemical Society

|August 25, 2005

Resumen

Los tensioactivos no iónicos forman estructuras hemicilíndricas en la interfaz líquido grafito-iónico. Este autoensamblaje requiere colas de surfactante más largas y concentraciones más altas en comparación con los sistemas acuosos.

Más Videos Relacionados

Covalent Immobilization of Proteins for the Single Molecule Force Spectroscopy

Covalent Immobilization of Proteins for the Single Molecule Force Spectroscopy

Published on: August 20, 2018

Multiscale Structures Aggregated by Imprinted Nanofibers for Functional Surfaces

Multiscale Structures Aggregated by Imprinted Nanofibers for Functional Surfaces

Published on: September 11, 2018

Videos de Experimentos Relacionados

Last Updated: Jul 14, 2026

A Technique to Functionalize and Self-assemble Macroscopic Nanoparticle-ligand Monolayer Films onto Template-free Substrates

A Technique to Functionalize and Self-assemble Macroscopic Nanoparticle-ligand Monolayer Films onto Template-free Substrates

Published on: May 9, 2014

Covalent Immobilization of Proteins for the Single Molecule Force Spectroscopy

Covalent Immobilization of Proteins for the Single Molecule Force Spectroscopy

Published on: August 20, 2018

Multiscale Structures Aggregated by Imprinted Nanofibers for Functional Surfaces

Multiscale Structures Aggregated by Imprinted Nanofibers for Functional Surfaces

Published on: September 11, 2018

Área de la Ciencia:

Química de las superficies.
Ciencia de los materiales Ciencia de los materiales.
Nanotecnología La nanotecnología es la nanotecnología.

Sus antecedentes:

Los tensioactivos no iónicos son cruciales en varias aplicaciones.
Comprender el autoensamblaje en las interfaces es clave para el diseño de materiales.
Los líquidos iónicos ofrecen propiedades únicas de disolvente.

Objetivo del estudio:

Para investigar el autoensamblaje de los tensioactivos no iónicos en la interfaz líquido grafito-iónico.
Para comparar el comportamiento de autoensamblaje en líquidos iónicos versus sistemas acuosos.
Para caracterizar las estructuras agregadas resultantes.

Principales métodos:

Se emplearon imágenes de microscopía de fuerza atómica (AFM, por sus siglas en inglés).
El estudio se centró en la interfaz entre el grafito y el nitrato de etilamonio (un líquido iónico a temperatura ambiente).
Se analizaron la adsorción y la agregación de agentes tensioactivos.

Principales resultados:

Los tensioactivos no iónicos se autoensamblan en agregados hemicilíndricos.
La adsorción de surfactante sigue una disposición de monocapa cola a cola a lo largo de los ejes de simetría del grafito.
La formación de hemicilindros en líquidos iónicos requiere colas de tensioactivos más largas y concentraciones más altas que en el agua.

Conclusiones:

La interfaz de líquido iónico a temperatura ambiente de grafito soporta el autoensamblaje de surfactante no iónico en hemicilindros.
Los factores ambientales como la polaridad y la viscosidad del disolvente influyen en la cinética y la estructura del autoensamblaje.
Los hallazgos proporcionan información sobre los fenómenos interfaciales relevantes para la nanotecnología y la ciencia de los materiales.