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

Photoluminescence: Applications01:14

Photoluminescence: Applications

456
Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
456
Photoluminescence: Fluorescence and Phosphorescence01:23

Photoluminescence: Fluorescence and Phosphorescence

2.2K
Photoluminescence is a process where a molecule absorbs light energy and re-emits it in the form of light. This phenomenon occurs when a substance absorbs photons, promoting its electrons to higher energy level excited states, followed by a relaxation process in which the electrons return to their original ground state energy levels and emit light. Photoluminescence is widely observed in various materials, including semiconductors, and organic and inorganic compounds.
A pair of electrons in a...
2.2K
Variables Affecting Phosphorescence and Fluorescence01:26

Variables Affecting Phosphorescence and Fluorescence

563
Fluorescence and phosphorescence are essential phenomena in fields like analytical chemistry, biological imaging, and materials science, where they detect molecular properties and visualize cellular structures. Understanding the variables that influence these luminescent behaviors is crucial for maximizing accuracy and efficiency in their applications. These variables can broadly be grouped into chemical structure, solvent properties, and external conditions, each playing a distinct role in...
563
Fluorescence and Phosphorescence: Instrumentation01:25

Fluorescence and Phosphorescence: Instrumentation

670
Fluorometers and spectrofluorometers are two types of instruments used for measuring molecular fluorescence. These instruments differ in how they select excitation and emission wavelengths and the type of light sources they utilize. Fluorometers use absorption interference filters to choose excitation and emission wavelengths. The excitation source in a fluorometer is typically a low-pressure mercury vapor lamp that emits intense lines distributed throughout the ultraviolet and visible regions.
670
Photoreceptors and Plant Responses to Light02:00

Photoreceptors and Plant Responses to Light

20.5K
Light plays a significant role in regulating the growth and development of plants. In addition to providing energy for photosynthesis, light provides other important cues to regulate a range of developmental and physiological responses in plants.
20.5K

También podría leer

Artículos Relacionados

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

Ordenar por
Same author

Targeting 15-PGDH/15-oxoETE to mitigate inflammation and senescence in asthma.

Biochimica et biophysica acta. Molecular basis of disease·2026
Same author

Mechanochemically Coupled Multidimensional Modulation of Calcium Overload.

ACS nano·2026
Same author

Treatment of gastrocnemius spasms induced by foot injury using negative pressure wound therapy: A case report.

SAGE open medical case reports·2026
Same author

Lipopolysaccharide hydrolysis-targeting nano-chimeras detoxify endotoxin through specific adsorption and efficient degradation.

Nature communications·2026
Same author

Intracranial-implanted coupled electrode tumor treating fields (ICE-TTF) enable efficient and directionally tunable electric-field delivery for glioma.

Brain stimulation·2026
Same author

Adaptive Cavity-Enabled Crystalline Chirality in Nanocarbon Cages.

Angewandte Chemie (International ed. in English)·2026

Video Experimental Relacionado

Updated: Jul 31, 2025

Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core
08:51

Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core

Published on: October 24, 2017

9.6K

Pilar sensible al sustrato [1] Fosforescencia orgánica a temperatura ambiente basada en areno

Huangtianzhi Zhu1,2, Junkai Liu3, Yitao Wu1

  • 1Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China.

Journal of the American Chemical Society
|May 8, 2023
PubMed
Resumen

Los investigadores desarrollaron un nuevo sistema de moléculas pequeñas que exhibe fosforescencia a temperatura ambiente (RTP). Este sistema, un derivado del pillarareno, muestra una mayor emisión al interactuar con haluros de alquilo, allanando el camino para nuevos materiales luminiscentes.

Más Videos Relacionados

Time-resolved Photophysical Characterization of Triplet-harvesting Organic Compounds at an Oxygen-free Environment Using an iCCD Camera
06:08

Time-resolved Photophysical Characterization of Triplet-harvesting Organic Compounds at an Oxygen-free Environment Using an iCCD Camera

Published on: December 27, 2018

9.0K
Using Cyclic Voltammetry, UV-Vis-NIR, and EPR Spectroelectrochemistry to Analyze Organic Compounds
11:44

Using Cyclic Voltammetry, UV-Vis-NIR, and EPR Spectroelectrochemistry to Analyze Organic Compounds

Published on: October 18, 2018

26.6K

Videos de Experimentos Relacionados

Last Updated: Jul 31, 2025

Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core
08:51

Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core

Published on: October 24, 2017

9.6K
Time-resolved Photophysical Characterization of Triplet-harvesting Organic Compounds at an Oxygen-free Environment Using an iCCD Camera
06:08

Time-resolved Photophysical Characterization of Triplet-harvesting Organic Compounds at an Oxygen-free Environment Using an iCCD Camera

Published on: December 27, 2018

9.0K
Using Cyclic Voltammetry, UV-Vis-NIR, and EPR Spectroelectrochemistry to Analyze Organic Compounds
11:44

Using Cyclic Voltammetry, UV-Vis-NIR, and EPR Spectroelectrochemistry to Analyze Organic Compounds

Published on: October 18, 2018

26.6K

Área de la Ciencia:

  • Química fotofísica
  • Química supramolecular
  • Ciencias de los materiales

Sus antecedentes:

  • La fosforescencia a temperatura ambiente (RTP) es un fenómeno de emisión de larga duración.
  • La RTP se observa en proteínas y polímeros debido a la comunicación electrónica a través del espacio.
  • Las moléculas pequeñas con capacidades intrínsecas de RTP y comunicación electrónica a través del espacio son escasas.

Objetivo del estudio:

  • Diseñar e investigar un nuevo sistema de moléculas pequeñas que muestre fosforescencia a temperatura ambiente sensible al haluro de alquilo (RTP).
  • Explorar el mecanismo de transferencia de carga a través del espacio (TSCT) dentro de un marco pilar.
  • Comprender los requisitos estructurales para lograr la RTP en moléculas pequeñas.

Principales métodos:

  • Síntesis de derivados del pilar meta-formilfenilo[5]
  • Investigación de las propiedades de la RTP tras el tratamiento con bromoetano (un haluro de alquilo).
  • Análisis estructural mediante difracción de rayos X de un solo cristal.
  • Cálculos químicos cuánticos para aclarar la estructura electrónica y las vías fotofísicas.

Principales resultados:

  • Un derivado de areno con meta-formilfenilo demostró una mejora significativa de la RTP después de la adición de bromoetano.
  • Un derivado isomérico de pilar para-formilfenilo[5]areno no exhibió RTP.
  • Los análisis estructurales y computacionales revelaron que el TSCT dentro de la cavidad del pilareno es crucial para RTP.
  • Se identificaron los factores clave que influyen en el TSCT, las brechas energéticas y el cruce entre sistemas.

Conclusiones:

  • El derivado de pillarareno desarrollado funciona como un sistema RTP eficaz que responde a los haluros de alquilo.
  • La transferencia de carga a través del espacio dentro de la cavidad del pilareno es esencial para el RTP observado.
  • Este estudio proporciona una base para el diseño de nuevas moléculas pequeñas con características RTP sintonizables.