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

Chirality02:25

Chirality

29.7K
Chirality is a term that describes the lack of mirror symmetry in an object. In other words, chiral objects cannot be superposed on their mirror images. For example, our feet are chiral, as the mirror image of the left foot, the right foot, cannot be superposed on the left foot.
Chiral objects exhibit a sense of handedness when they interact with another chiral object. For example, our left foot can only fit in the left shoe and not in the right shoe. Achiral objects — objects that have...
29.7K
Chirality in Nature02:30

Chirality in Nature

17.3K
Chirality is the most intriguing yet essential facet of nature, governing life’s biochemical processes and precision. It can be observed from a snail shell pattern in a macroscopic world to an amino acid, the minutest building block of life. Most of the snails around the world have right-coiled shells because of the intrinsic chirality in their genes. All the amino acids present in the human body exist in an enantiomerically pure state, except for glycine - the sole achiral amino acid.
17.3K
Chirality at Nitrogen, Phosphorus, and Sulfur02:30

Chirality at Nitrogen, Phosphorus, and Sulfur

7.0K
Chirality is most prevalent in carbon-based tetrahedral compounds, but this important facet of molecular symmetry extends to sp3-hybridized nitrogen, phosphorus and sulfur centers, including trivalent molecules with lone pairs. Here, the lone pair behaves as a functional group in addition to the other three substituents to form an analogous tetrahedral center that can be chiral.
A consequence of chirality is the need for enantiomeric resolution. While this is theoretically possible for all...
7.0K
Molecules with Multiple Chiral Centers02:25

Molecules with Multiple Chiral Centers

15.1K
Molecules that possess multiple chiral centers can afford a large number of stereoisomers. For instance, while some molecules like 2-butanol have one chiral center, defined as a tetrahedral carbon atom with four different substituents attached, several molecules like butane-2,3-diol have multiple chiral centers. A simple formula to predict the number of stereoisomers possible for a molecule with n chiral centers is 2n. However, there can be a lower number where some of the stereoisomers are...
15.1K
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

30.9K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
30.9K
Structures of Solids02:22

Structures of Solids

18.0K
Solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern are known as crystalline solids. Metals and ionic compounds typically form ordered, crystalline solids. A crystalline solid has a precise melting temperature because each atom or molecule of the same type is held in place with the same forces or energy. Amorphous solids or non-crystalline solids (or, sometimes, glasses) which lack an ordered internal structure and are randomly arranged. Substances that...
18.0K

También podría leer

Artículos Relacionados

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

Ordenar por
Same author

Diethylene glycol poisoning identified in the emergency department: A case report.

The American journal of emergency medicine·2026
Same author

Point-of-Care Ultrasound M-Mode Analysis Using M.mode.ify: An External Validation Study for E-point Septal Separation Measurement.

Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine·2026
Same author

Role of structural isomerism in the properties of imine-based organic hole-transporting materials.

Physical chemistry chemical physics : PCCP·2026
Same author

Topotactic conversion of Ni<sub>3</sub>CuN into Ni<sub>3</sub>Cu with anti-perovskite structure reveals the role of nitrogen on electrocatalytic properties.

Chemical communications (Cambridge, England)·2026
Same author

Interaction of Polymer of Intrinsic Microporosity PIM‑1 with Explosive Analytes at the Molecular Level: Combined Experiment and Computational Modeling.

The journal of physical chemistry. C, Nanomaterials and interfaces·2026
Same author

Phytochemical-Loaded Biodegradable Nanoemulsions for Eradication of Fungal Biofilms.

Nanomaterials (Basel, Switzerland)·2026

Video Experimental Relacionado

Updated: Feb 8, 2026

Assembly of Gold Nanorods into Chiral Plasmonic Metamolecules Using DNA Origami Templates
09:17

Assembly of Gold Nanorods into Chiral Plasmonic Metamolecules Using DNA Origami Templates

Published on: March 5, 2019

9.2K

Probe de campos plasmónicos quirales Orden estructural de las biointerfaces

Christopher Kelly1, Ryan Tullius1, Adrian J Lapthorn1

  • 1School of Chemistry , Joseph Black Building, University of Glasgow , Glasgow G12 8QQ , United Kingdom.

Journal of the American Chemical Society
|June 19, 2018
PubMed
Resumen

La superciralidad, campos plasmónicos mejorados, ahora pueden monitorear el orden estructural de capas complejas de proteínas. Este avance permite el estudio de interfaces biológicas reales sin necesidad de composiciones conocidas.

Más Videos Relacionados

Colloidal Synthesis of Nanopatch Antennas for Applications in Plasmonics and Nanophotonics
09:12

Colloidal Synthesis of Nanopatch Antennas for Applications in Plasmonics and Nanophotonics

Published on: May 28, 2016

11.7K
Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy
10:28

Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy

Published on: May 27, 2018

9.5K

Videos de Experimentos Relacionados

Last Updated: Feb 8, 2026

Assembly of Gold Nanorods into Chiral Plasmonic Metamolecules Using DNA Origami Templates
09:17

Assembly of Gold Nanorods into Chiral Plasmonic Metamolecules Using DNA Origami Templates

Published on: March 5, 2019

9.2K
Colloidal Synthesis of Nanopatch Antennas for Applications in Plasmonics and Nanophotonics
09:12

Colloidal Synthesis of Nanopatch Antennas for Applications in Plasmonics and Nanophotonics

Published on: May 28, 2016

11.7K
Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy
10:28

Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy

Published on: May 27, 2018

9.5K

Área de la Ciencia:

  • La biofísica
  • Ciencias de la superficie
  • Espectroscopia

Sus antecedentes:

  • El orden estructural de los biopolímeros en las interfaces es crítico para las interacciones biológicas.
  • Los métodos espectroscópicos existentes se limitan a sistemas simples de un solo componente y a menudo requieren etiquetas.
  • Las capas biológicas complejas y multicomponentes tienen firmas espectrales desafiantes.

Objetivo del estudio:

  • Demostrar la sensibilidad de los campos plasmónicos superquirales al orden de orientación global en las capas de proteínas.
  • Validar el método mediante simulaciones numéricas y sistemas de modelos.
  • Establecer la superciralidad como una herramienta para analizar las interfaces biológicas complejas.

Principales métodos:

  • Utilizando campos plasmónicos superquirales para sondear las capas de proteínas.
  • Monitoreo de la evolución del orden de orientación en las capas de inmunoglobulina G.
  • Análisis de los cambios de orden estructural en las capas de proteínas séricas sin conocimiento previo de la composición.

Principales resultados:

  • La superciralidad detecta respuestas anisotrópicas dipolo eléctrico-magnético, lo que indica el orden estructural.
  • El método monitoreó con éxito el orden de orientación tanto en capas de proteínas modelo como complejas.
  • Los cambios cualitativos en la composición de la capa proteica del suero sanguíneo se correlacionaron con alteraciones en el orden estructural.

Conclusiones:

  • La superciralidad es sensible al orden de orientación global en las capas de proteínas.
  • Esta técnica supera las limitaciones de los métodos tradicionales para las interfaces biológicas complejas.
  • La superciralidad ofrece una nueva y poderosa herramienta para estudiar la dinámica estructural en sistemas biológicos reales.