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

The Supercomplexes in the Crista Membrane01:41

The Supercomplexes in the Crista Membrane

The mitochondrial cristae membrane is the primary site for the oxidative phosphorylation (OXPHOS) process of energy conversion mediated through respiratory complexes I to V. These complexes have been widely studied for decades, and it has been proven that they form supramolecular structures called respiratory supercomplexes (SC). These higher-order complexes may be crucial in maintaining the biochemical structure and improving the physiological activity of the individual complexes while...
Mechanisms of Membrane Domain Formation00:59

Mechanisms of Membrane Domain Formation

Different physical properties of lipids and proteins allow them to localize and form distinct islands or domains in the membrane. Some membrane domains are formed due to protein-protein interactions, whereas others are formed due to the presence of specific lipids such as sphingolipids and sterols—for example, large proteins, such as bacteriorhodopsin, aggregate and create distinct domains.
Another mechanism for membrane domain formation involves membrane proteins interacting with cytoskeletal...
Structure of Porins01:21

Structure of Porins

Mitochondria, chloroplasts, and gram-negative bacteria have transmembrane, beta-barrel proteins called porins to mediate the free diffusion of ions and metabolites across the membrane. Mitochondrial porin precursors contain conserved amino acid sequences called beta signals at their C-terminal. Beta signals have a  motif of PoXGXXHyXHy (Po-Polar, X-Any amino acid, G-Glycine, Hy-LargeHydrophobic), which are crucial for precursor recognition to initiate precursor assembly. Beta-barrel precursors...
Tight Junctions01:29

Tight Junctions

Tight junctions are molecular seals between cells that prevent the leaking of fluids, ions, and other small solutes across cavities and compartments in multicellular organisms. They are mainly composed of claudin and occludin transmembrane proteins, and other proteins such as tricellulin and JAM (junctional adhesion molecule). All these proteins are 4-pass transmembrane proteins, except JAM, which is a single-pass transmembrane protein belonging to the immunoglobulin superfamily. The...
Imperfections in Crystal Structure: Stoichiometric Point Defects01:26

Imperfections in Crystal Structure: Stoichiometric Point Defects

Schottky defects arise when some lattice points in a crystal, such as those in NaCl, remain unoccupied, creating lattice vacancies without disturbing the overall electrical neutrality of the crystal. This defect is common in ionic crystals where the positive and negative ions are similar in size, as seen in sodium chloride and cesium chloride. The presence of Schottky defects enables the crystal to conduct electricity to a small extent through an ionic mechanism. Electric fields cause nearby...

También podría leer

Artículos Relacionados

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

Ordenar por
Same author

Single-particle atomic-scale strain-gradient engineering for high-performance fuel cells.

Nature communications·2026
Same author

Interfacial Lewis Acid Chemistry Enabled by Mesoporous MOFs Toward High-Performance Four-Electron Zinc-Iodine Batteries.

Angewandte Chemie (International ed. in English)·2026
Same author

Efficient Hydrogen Production from Aqueous Methanol Driven by Microdroplet Interfaces.

Journal of the American Chemical Society·2026
Same author

Modulating the interfacial solvation structure to promote hydroxyl migration for alkaline hydrogen oxidation.

Nature communications·2026
Same author

Versatile interfacial-energy-driven emulsion assembly synthesis of large-pore mesoporous covalent organic frameworks for accelerated Zn<sup>2+</sup> desolvation in aqueous battery.

National science review·2026
Same author

Mechanochemically Coupled Multidimensional Modulation of Calcium Overload.

ACS nano·2026

Video Experimental Relacionado

Updated: Jun 22, 2026

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes
07:45

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes

Published on: August 16, 2018

10.1K

Construir superestructuras únicas de carbono mesoporoso a través de ensamblaje confinado de interfaz de monomicela

Zaiwang Zhao1, Linlin Duan1, Yujuan Zhao2

  • 1Department of Chemistry, Laboratory of Advanced Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, iChEM and State Key Laboratory of Molecular Engineering of Polymers, College of Chemistry and Materials, Fudan University, Shanghai 200433, P. R. China.

Journal of the American Chemical Society
|June 22, 2022
PubMed
Resumen

Los investigadores desarrollaron una nueva superestructura de carbono mesoporoso N-dopado en 3D utilizando un ensamblaje de interfaz de monomicela. Este material ofrece una gran superficie y un excelente rendimiento para las reacciones de reducción de oxígeno (ORR).

Más Videos Relacionados

Surface Properties of Synthesized Nanoporous Carbon and Silica Matrices
09:31

Surface Properties of Synthesized Nanoporous Carbon and Silica Matrices

Published on: March 27, 2019

9.6K
Author Spotlight: Exploring Self-Assembled MOF-Polymer Composites
06:48

Author Spotlight: Exploring Self-Assembled MOF-Polymer Composites

Published on: June 14, 2024

1.9K

Videos de Experimentos Relacionados

Last Updated: Jun 22, 2026

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes
07:45

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes

Published on: August 16, 2018

10.1K
Surface Properties of Synthesized Nanoporous Carbon and Silica Matrices
09:31

Surface Properties of Synthesized Nanoporous Carbon and Silica Matrices

Published on: March 27, 2019

9.6K
Author Spotlight: Exploring Self-Assembled MOF-Polymer Composites
06:48

Author Spotlight: Exploring Self-Assembled MOF-Polymer Composites

Published on: June 14, 2024

1.9K

Área de la Ciencia:

  • Ciencias de los materiales
  • Nanotecnología
  • La electroquímica

Sus antecedentes:

  • Las mesostructuras jerárquicas 3D con porosidad y funcionalidad controladas son difíciles de sintetizar.
  • Los materiales existentes a menudo carecen de suficiente superficie y redes de poros interconectados.

Objetivo del estudio:

  • Desarrollar una nueva superestructura de carbono mesoporoso en 3D con propiedades ajustables.
  • Para explorar su potencial como un material electrocatalítico avanzado.

Principales métodos:

  • Enfoque de ensamblaje confinado con interfaz de monomicela.
  • Fabricación de estructuras jerárquicas con huecos centrales y mesoporos esféricos.
  • Caracterización de la estructura de los poros, la superficie y la morfología.

Principales resultados:

  • Se ha logrado una superestructura de carbono mesoporo 3D sin precedentes con poros interconectados.
  • Superficie accesible muy alta expuesta (685 m2 g−1).
  • Se ha demostrado que se puede controlar el número de mesoporos, el tamaño de las partículas y el grosor de la cáscara.
  • Se obtienen otras configuraciones como nanovesículas huecas en 3D y nanohojas en 2D.

Conclusiones:

  • La superestructura desarrollada se muestra prometedora como un electrocatalizador avanzado para la reacción de reducción de oxígeno (ORR).
  • Se obtiene un potencial de media onda de 0,82 V (vs RHE), comparable al Pt/C comercial.
  • Exhibió una notable durabilidad para ORR, destacando su potencial en aplicaciones energéticas.