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

Colors and Magnetism03:02

Colors and Magnetism

Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human eye.
Properties of Transition Metals02:58

Properties of Transition Metals

Transition metals are defined as those elements that have partially filled d orbitals. As shown in Figure 1, the d-block elements in groups 3–12 are transition elements. The f-block elements, also called inner transition metals (the lanthanides and actinides), also meet this criterion because the d orbital is partially occupied before the f orbitals.
Formation of Complex Ions03:45

Formation of Complex Ions

A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

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...

También podría leer

Artículos Relacionados

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

Ordenar por
Same author

In situ elucidation of the formation mechanism of donor-acceptor complexes responsible for exciplex generation.

Communications chemistry·2026
Same author

Galectin-9-driven immune evasion constrains radiotherapy-induced systemic antitumor immunity.

Journal for immunotherapy of cancer·2026
Same author

Asymmetric organic NIR chromophores for bioimaging and phototherapy.

Nanoscale·2026
Same author

Planar rotor-enabled quenching-resistant NIR-II fluorophores for high-contrast bioimaging and efficient cancer phototheranostics.

Materials horizons·2026
Same author

Targeting PCK1 to overcome CDK4/6 inhibitor resistance for breast cancer therapy.

Cancer letters·2026
Same author

Interlocked Rotaxane Enables TADF with Distinct Excited-State Structural Relaxation.

Journal of the American Chemical Society·2026

Video Experimental Relacionado

Updated: Jul 7, 2026

Fabrication of White Light-emitting Electrochemical Cells with Stable Emission from Exciplexes
05:51

Fabrication of White Light-emitting Electrochemical Cells with Stable Emission from Exciplexes

Published on: November 15, 2016

Células electroquímicas emisoras de luz blanca en estado sólido que utilizan complejos de metales de transición

Hai-Ching Su1, Hsiao-Fan Chen, Fu-Chuan Fang

  • 1Department of Electrical Engineering, Graduate Institute of Electro-optical Engineering, National Taiwan University, Taipei 10617, Taiwan.

Journal of the American Chemical Society
|February 28, 2008
PubMed
Resumen

Los investigadores desarrollaron células electroquímicas blancas de estado sólido que emiten luz (LEC) utilizando complejos de iridio. Estos dispositivos ofrecen luz blanca eficiente y de alta calidad, lo que sugiere un futuro prometedor para las tecnologías avanzadas de iluminación.

Más Videos Relacionados

A Novel Technique for Generating and Observing Chemiluminescence in a Biological Setting
08:57

A Novel Technique for Generating and Observing Chemiluminescence in a Biological Setting

Published on: March 9, 2017

Vibrational Spectra of a N719-Chromophore/Titania Interface from Empirical-Potential Molecular-Dynamics Simulation, Solvated by a Room Temperature Ionic Liquid
08:54

Vibrational Spectra of a N719-Chromophore/Titania Interface from Empirical-Potential Molecular-Dynamics Simulation, Solvated by a Room Temperature Ionic Liquid

Published on: January 25, 2020

Videos de Experimentos Relacionados

Last Updated: Jul 7, 2026

Fabrication of White Light-emitting Electrochemical Cells with Stable Emission from Exciplexes
05:51

Fabrication of White Light-emitting Electrochemical Cells with Stable Emission from Exciplexes

Published on: November 15, 2016

A Novel Technique for Generating and Observing Chemiluminescence in a Biological Setting
08:57

A Novel Technique for Generating and Observing Chemiluminescence in a Biological Setting

Published on: March 9, 2017

Vibrational Spectra of a N719-Chromophore/Titania Interface from Empirical-Potential Molecular-Dynamics Simulation, Solvated by a Room Temperature Ionic Liquid
08:54

Vibrational Spectra of a N719-Chromophore/Titania Interface from Empirical-Potential Molecular-Dynamics Simulation, Solvated by a Room Temperature Ionic Liquid

Published on: January 25, 2020

Área de la Ciencia:

  • Ciencia de los materiales Ciencia de los materiales.
  • Física del estado sólido Física del estado sólido
  • La fotoquímica es la fotoquímica.

Sus antecedentes:

  • Las tecnologías de iluminación de estado sólido son cruciales para la eficiencia energética.
  • Desarrollar dispositivos eficientes y estables que emitan luz blanca sigue siendo un desafío clave.
  • Los complejos de iridio son conocidos por sus propiedades electroluminiscentes.

Objetivo del estudio:

  • Para demostrar la emisión electroluminiscente blanca de las células electroquímicas emisoras de luz de estado sólido (LEC) de una sola capa.
  • Investigar el rendimiento de los complejos de iridio catiónico huésped-huésped en LEC para la generación de luz blanca.

Principales métodos:

  • Fabricación de células electroquímicas emisoras de luz de estado sólido (LEC) de una sola capa.
  • Utilizando complejos de iridio catiónico huésped-huésped como material emisor.
  • Caracterización de los espectros electroluminiscentes, la eficiencia y la representación del color.

Principales resultados:

  • Demostración exitosa de la emisión electroluminiscente blanca.
  • Se obtuvieron las coordenadas de la Comisión Internacional de l'Eclairage que van desde (0.45, 0.40) a (0.35, 0.39) en 2.9-3.3 V.
  • Indices de renderizado de color altos de hasta 80.
  • Eficiencia cuántica externa máxima del 4% y eficiencia energética máxima de 7,8 lm/W.

Conclusiones:

  • Los complejos de iridio catiónico huésped-huésped son efectivos para generar electroluminiscencia blanca en las LEC.
  • Estos LEC blancos muestran potencial como una alternativa viable para la iluminación de estado sólido.
  • La tecnología desarrollada ofrece una alta eficiencia y una excelente calidad de color.