Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

Ionic Radii03:10

Ionic Radii

33.9K
Ionic radius is the measure used to describe the size of an ion. A cation always has fewer electrons and the same number of protons as the parent atom; it is smaller than the atom from which it is derived. For example, the covalent radius of an aluminum atom (1s22s22p63s23p1) is 118 pm, whereas the ionic radius of an Al3+ (1s22s22p6) is 68 pm. As electrons are removed from the outer valence shell, the remaining core electrons occupying smaller shells experience a greater effective nuclear...
33.9K
Ionic Bonds00:42

Ionic Bonds

132.2K
Overview
When atoms gain or lose electrons to achieve a more stable electron configuration they form ions. Ionic bonds are electrostatic attractions between ions with opposite charges. Ionic compounds are rigid and brittle when solid and may dissociate into their constituent ions in water. Covalent compounds, by contrast, remain intact unless a chemical reaction breaks them.
Opposing Charges Hold Ions Together in Ionic Compounds
Ionic bonds are reversible electrostatic interactions between ions...
132.2K
Ionic Bonding and Electron Transfer02:48

Ionic Bonding and Electron Transfer

49.8K
Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in its valence shell. Compounds composed of ions are called ionic compounds (or salts), and their constituent ions are held together by ionic bonds: electrostatic forces of attraction between oppositely charged cations and anions. 
49.8K
Solubility of Ionic Compounds02:55

Solubility of Ionic Compounds

68.3K
Solubility is the measure of the maximum amount of solute that can be dissolved in a given quantity of solvent at a given temperature and pressure. Solubility is usually measured in molarity (M) or moles per liter (mol/L). A compound is termed soluble if it dissolves in water.
68.3K
Molecular and Ionic Solids02:54

Molecular and Ionic Solids

20.3K
Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
20.3K
Ionic Crystal Structures02:42

Ionic Crystal Structures

17.9K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
17.9K

También podría leer

Artículos Relacionados

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

Ordenar por
Same author

Customizing Ionic Micelles by Dynamic Coassembly of Sequence-Defined Peptoid Block Copolymers.

Macromolecules·2026
Same author

High-throughput profiling of the T cell receptor delta CDR3 repertoire reveals species-specific patterns in cattle (Bos taurus) and water buffalo (Bubalus bubalis).

Frontiers in immunology·2026
Same author

Antibiotic-Loaded Polymethyl Methacrylate Cement Drives Fibroblast-Mediated Angiogenesis via LOXL2 to Accelerate Diabetic Foot Ulcer Healing.

FASEB journal : official publication of the Federation of American Societies for Experimental Biology·2026
Same author

Programmable Electrostatics in Charge-Patterned Polypeptoid Micelles Probed by Small-Angle Neutron Scattering.

Macromolecules·2026
Same author

Corona Chain-Controlled Transition from Ostwald Ripening-Grown Hexagonal Platelets to Screw-Dislocation Spirals in Liquid-Crystalline Polypeptoids.

Nano letters·2026
Same author

Microstructure Control of Polymer Films via Air-Assisted Electrospray for Binderless Electrodes.

ACS applied polymer materials·2026
Same journal

Proton-Gated Torsional Spring for Molecular Energy Storage.

Journal of the American Chemical Society·2026
Same journal

Topologically Programmed Dual-Channel Covalent Organic Frameworks Decouple Gas and Ion Fluxes for Acidic CO<sub>2</sub> Electroreduction.

Journal of the American Chemical Society·2026
Same journal

Plasmonic Re-Excitation Enables Superoxide-Mediated Ethane Conversion to Acetic Acid under Visible Light.

Journal of the American Chemical Society·2026
Same journal

Photocatalytic Controlled Halodefluorination of Perfluoroalkyl Compounds Using <i>N</i>-Arylphenothiazines.

Journal of the American Chemical Society·2026
Same journal

Photoinduced Disproportionation Enables Oxidative Addition of Aryl Iodides at a Gallium(I) Center.

Journal of the American Chemical Society·2026
Same journal

Biocatalytic C3 β-<i>O</i>-Glycosylation of Triterpenes and Sterols to Synthesize Natural and Unnatural Saponins.

Journal of the American Chemical Society·2026
Ver todos los artículos relacionados

Video Experimental Relacionado

Updated: Feb 13, 2026

Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly
09:34

Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly

Published on: February 6, 2020

8.0K

Soluciones autoensambladas de copolímeros de bloque peptídico definidos por secuencia

Garrett L Sternhagen1, Sudipta Gupta1, Yueheng Zhang2

  • 1Department of Chemistry and Macromolecular Studies Group , Louisiana State University , Baton Rouge , Louisiana 70803 , United States.

Journal of the American Chemical Society
|March 7, 2018
PubMed
Resumen
Este resumen es generado por máquina.

Los copolímeros de bloque peptoide iónico se ensamblan a sí mismos en micelas esféricas sintonizables. El control de la posición del monómero iónico dicta con precisión el tamaño y la agregación de la micela, ofreciendo nuevas formas de diseñar nanoestructuras.

Más Videos Relacionados

Synthesis of Monodisperse Cylindrical Nanoparticles via Crystallization-driven Self-assembly of Biodegradable Block Copolymers
11:42

Synthesis of Monodisperse Cylindrical Nanoparticles via Crystallization-driven Self-assembly of Biodegradable Block Copolymers

Published on: June 20, 2019

8.3K
Anionic Polymerization of an Amphiphilic Copolymer for Preparation of Block Copolymer Micelles Stabilized by &#960;-&#960; Stacking Interactions
10:53

Anionic Polymerization of an Amphiphilic Copolymer for Preparation of Block Copolymer Micelles Stabilized by π-π Stacking Interactions

Published on: October 10, 2016

14.6K

Videos de Experimentos Relacionados

Last Updated: Feb 13, 2026

Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly
09:34

Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly

Published on: February 6, 2020

8.0K
Synthesis of Monodisperse Cylindrical Nanoparticles via Crystallization-driven Self-assembly of Biodegradable Block Copolymers
11:42

Synthesis of Monodisperse Cylindrical Nanoparticles via Crystallization-driven Self-assembly of Biodegradable Block Copolymers

Published on: June 20, 2019

8.3K
Anionic Polymerization of an Amphiphilic Copolymer for Preparation of Block Copolymer Micelles Stabilized by &#960;-&#960; Stacking Interactions
10:53

Anionic Polymerization of an Amphiphilic Copolymer for Preparation of Block Copolymer Micelles Stabilized by π-π Stacking Interactions

Published on: October 10, 2016

14.6K

Área de la Ciencia:

  • Química de los polímeros
  • Ciencias de los materiales
  • Nanotecnología

Sus antecedentes:

  • Los copolímeros de bloque anfifílico se autoensamblan en micelas.
  • El control de la estructura de la micela es crucial para las aplicaciones.
  • Los monómeros iónicos introducen carga, lo que influye en el autoensamblaje.

Objetivo del estudio:

  • Sintetiza y caracteriza los copolímeros de bloque peptoide iónico.
  • Investigar el efecto del número y la posición del monómero iónico en la estructura de la micela.
  • Establecer relaciones estructura-propiedad para la formación de micelas a medida.

Principales métodos:

  • Síntesis de submonómeros de copolímeros de bloque.
  • Disolución en agua con pH controlado y autoensamblaje.
  • Dispersión de neutrones de ángulo pequeño (SANS) para el análisis estructural.

Principales resultados:

  • Copolímeros de bloque peptoideos sintetizados con contenido iónico y posición controlados.
  • Se ha observado un autoensamblaje en micelas esféricas (de 5 a 10 nm de radio) con baja concentración micelar crítica (CMC).
  • Descubrió que el número de agregación de micelas y el radio aumentan con la distancia del monómero iónico de la unión, siguiendo las relaciones de la ley de potencia.

Conclusiones:

  • El control preciso de la posición del monómero iónico en los copolímeros de bloque permite ajustar el tamaño y la agregación de la micela.
  • Demostró un método para la ingeniería de nanoestructuras con propiedades específicas.
  • Los resultados son consistentes con los modelos teóricos para polímeros cargados.