Video Experimental Relacionado

Updated: Jan 27, 2026

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

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

Published on: November 15, 2016

Fotoconversión in situ de luminiscencia multicolor y emisión de luz blanca pura basada en ensamblaje supramolecular

Huang Wu^1,2, Yong Chen¹, Xianyin Dai¹

¹College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry , Nankai University , 94 Weijin Road , Nankai District, Tianjin 300071 , P.R. China.

Journal of the American Chemical Society

|March 13, 2019

Resumen

Los investigadores desarrollaron un nuevo ensamblaje supramolecular para la fotoluminiscencia multicolor. Este material permite la conversión de color controlada por foto in situ, lo que permite la emisión de luz ajustable para aplicaciones avanzadas.

Área de la Ciencia:

Ciencias de los materiales
Química supramolecular
La fotofísica

Sus antecedentes:

El desarrollo de materiales fotoluminiscentes multicolores con control de estímulos externos es un desafío.
La regulación fotocontrolada in situ de la salida luminiscente multicolor es poco común.

Objetivo del estudio:

Describir un conjunto supramolecular fotoluminiscente con salida de amplio espectro de fotoajuste in situ.
Para demostrar el cambio reversible de la intensidad de fluorescencia y la conversión del color.

Principales métodos:

Preparación de un conjunto supramolecular fotoluminiscente de dos etapas.
Utilizando el fotocambio de diarileto y la complejación huésped-invitado de cucurbita.
Formación de conjuntos supramoleculares ternarios con puntos de carbono aniónicos.

Principales resultados:

Una molécula invitada de diarileto modificada con estirilpiridinio exhibe un encendido/apagado reversible controlado por la luz.
La complejación con cucurbita[8]uril mejora la intensidad de fluorescencia y permite el apagado / recuperación inducido por la luz reversible.
Los conjuntos ternales muestran un cambio de color eficiente controlado por foto in situ de amarillo a azul, lo que permite la emisión de luz blanca pura.

Conclusiones:

El conjunto supramolecular desarrollado ofrece una nueva plataforma para la fotoluminiscencia multicolor regulada por la luz.
Este enfoque ofrece oportunidades para diseñar materiales avanzados contra la falsificación e instrumentos de visualización.

Más Videos Relacionados

Enhanced Electron Injection and Exciton Confinement for Pure Blue Quantum-Dot Light-Emitting Diodes by Introducing Partially Oxidized Aluminum Cathode

Enhanced Electron Injection and Exciton Confinement for Pure Blue Quantum-Dot Light-Emitting Diodes by Introducing Partially Oxidized Aluminum Cathode

Published on: May 31, 2018

Directed Assembly of Elastin-like Proteins into defined Supramolecular Structures and Cargo Encapsulation In Vitro

Directed Assembly of Elastin-like Proteins into defined Supramolecular Structures and Cargo Encapsulation In Vitro

Published on: April 8, 2020

Videos de Conceptos Relacionados

Emission Spectra

Emission Spectra

When solids, liquids, or condensed gases are heated sufficiently, they radiate some of the excess energy as light. Photons produced in this manner have a range of energies, and thereby produce a continuous spectrum in which an unbroken series of wavelengths is present.

The Carbon Cycle

The Carbon Cycle

Carbon is the basis of all organic matter on Earth, and is recycled through the ecosystem in two primary processes: one in which carbon is exchanged among living organisms, and one in which carbon is cycled over long periods of time through fossilized organic remains, weathering of rocks, and volcanic activity. Human activities, including increased agricultural practices and the burning of fossil fuels, has greatly affected the balance of the natural carbon cycle.

Carbon Skeletons

Carbon Skeletons

Life on Earth is carbon-based, as all macromolecules that make up living organisms contain carbon atoms. All organic compounds have a carbon backbone. Each carbon atom is tetravalent and can bond with four other atoms, making it an extraordinarily flexible component of biological molecules. Because carbon’s valence electrons are stable, it rarely becomes an ion. As the carbon chain increases in length, structural modifications such as ring structures, double bonds, and branching side...

Dot Product

Dot Product

The dot product is an essential concept in mathematics and physics.
In engineering, the dot product of any two vectors is the product of the magnitudes of the vectors and the cosine of the angle between them. It is denoted by a dot symbol between the two vectors.
Consider a vehicle pulling an object along the ground using a rope. If the rope makes an angle with the horizontal axis, the work done can be calculated using the dot product of the force applied and the object's displacement.
The dot...

Self-Help Support Groups

Self-Help Support Groups

Self-help support groups are voluntary, community-based organizations that provide a platform for individuals with shared concerns to exchange support, insights, and practical strategies for coping with life challenges. Typically led by group members or paraprofessionals, these groups form a cornerstone of mental health care, especially in reaching populations that are underserved by traditional healthcare systems.
Accessibility and Cost-Effectiveness
One of the primary strengths of self-help...

Need for Obtaining Pure Cultures

Need for Obtaining Pure Cultures

Pure cultures, defined as the growth of a single microorganism species isolated from mixed populations, are fundamental tools in microbiological research and practical applications. These cultures ensure genetic and physiological uniformity, allowing researchers to study microbial traits under controlled conditions.Isolation and Maintenance of Pure CulturesObtaining a pure culture involves isolating a single microbial type from a mixed sample through techniques such as serial dilutions, streak...