Video Experimental Relacionado

Updated: Jan 24, 2026

Synthesis of Near-Infrared Emitting Gold Nanoclusters for Biological Applications

Synthesis of Near-Infrared Emitting Gold Nanoclusters for Biological Applications

Published on: March 22, 2020

Montaje de nanocúmulos de plata de precisión atómica en marcos basados en nanocúmulos

Mohammad J Alhilaly¹, Ren-Wu Huang, Rounak Naphade

¹Department of Physics, College of Sciences , Imam Mohammad Ibn Saud Islamic University (IMSIU) , Riyadh , 11623 , Saudi Arabia.

Journal of the American Chemical Society

|May 29, 2019

Resumen

Los investigadores sintetizaron nanoagrupaciones de tiolato de plata utilizando plantillas de cloruro. El control preciso sobre el tamaño y la estructura de los nanoclusters permite materiales de marco sintonizables basados en clusters con propiedades mejoradas.

Área de la Ciencia:

Ciencias de los materiales
Nanotecnología
Química supramolecular

Sus antecedentes:

Los nanocúmulos de tiolato de plata están surgiendo como bloques de construcción para materiales avanzados.
El control de la síntesis y el ensamblaje de nanoclusters es crucial para el desarrollo de marcos funcionales.
La plantilla aniónica ofrece una vía para el control preciso de la estructura del nano racimo.

Objetivo del estudio:

Demostrar un método para sintetizar y caracterizar nanocúmulos de tiolato de plata atómicamente precisos.
Investigar el papel de las plantillas de aniones en el control de la nuclealidad del nanocúmulo.
Explorar cómo las variaciones de tamaño de los nanocúmulos influyen en la dimensionalidad y las propiedades de los marcos resultantes.

Principales métodos:

Síntesis con plantilla de aniones de nanocúmulos de tiolato de plata.
Caracterización estructural mediante técnicas avanzadas.
El ensamblaje de los nanocúmulos en marcos extendidos utilizando enlaces de bipiridina.

Principales resultados:

Con éxito sintetizó tres nanocúmulos de tiolato de plata atómicamente precisos.
Demostró el papel crítico de las plantillas de cloruro (Cl-) en el control preciso de la nuclealidad.
Se observó que una sola diferencia de átomo de Ag en el tamaño del nano racimo dicta la dimensionalidad del marco, las propiedades ópticas y la estabilidad térmica.
Dos nanocúmulos formaron marcos basados en nanocúmulos 1D y 2D (NCF).

Conclusiones:

Los nanocúmulos atómicamente precisos pueden sintetizarse y caracterizarse de manera confiable.
La plantilla de aniones es una herramienta poderosa para controlar el ensamblaje de nanocúmulos.
Los nanoclusters controlados por tamaño son bloques de construcción versátiles para materiales de marco basados en clústeres ajustables.
Estos NCF exhiben propiedades ópticas moduladas y una mejor estabilidad térmica.

Más Videos Relacionados

Synthesis of Immunotargeted Magneto-plasmonic Nanoclusters

Synthesis of Immunotargeted Magneto-plasmonic Nanoclusters

Published on: August 22, 2014

Picometer-Precision Atomic Position Tracking through Electron Microscopy

Picometer-Precision Atomic Position Tracking through Electron Microscopy

Published on: July 3, 2021

Videos de Conceptos Relacionados

Atomic Orbitals

Atomic Orbitals

An atomic orbital represents the three-dimensional regions in an atom where an electron has the highest probability to reside. The radial distribution function indicates the total probability of finding an electron within the thin shell at a distance r from the nucleus. The atomic orbitals have distinct shapes which are determined by l, the angular momentum quantum number. The orbitals are often drawn with a boundary surface, enclosing densest regions of the cloud.

Atomic Structure

Atomic Structure

Atomic Mass

Atomic Mass

Atoms — and the protons, neutrons, and electrons that compose them — are extremely small. For example, a carbon atom weighs less than 2 × 10−23 g. When describing the properties of tiny objects such as atoms, we use appropriately small units of measure, such as the atomic mass unit (amu). The amu was originally defined based on hydrogen, the lightest element, then later in terms of oxygen. Since 1961, it has been defined with regard to the most abundant isotope of carbon, atoms of which...

The Quantum-Mechanical Model of an Atom

The Quantum-Mechanical Model of an Atom

Shortly after de Broglie published his ideas that the electron in a hydrogen atom could be better thought of as being a circular standing wave instead of a particle moving in quantized circular orbits, Erwin Schrödinger extended de Broglie’s work by deriving what is now known as the Schrödinger equation. When Schrödinger applied his equation to hydrogen-like atoms, he was able to reproduce Bohr’s expression for the energy and, thus, the Rydberg formula governing hydrogen spectra.

The Atomic Theory of Matter

The Atomic Theory of Matter

The earliest recorded discussion of the basic structure of matter comes from ancient Greek philosophers. Leucippus and Democritus argued that all matter was composed of small, finite particles that they called atomos, meaning “indivisible.” Later, Aristotle and others came to the conclusion that matter consisted of various combinations of the four “elements” — fire, earth, air, and water — and could be infinitely divided. Interestingly, these philosophers...

Hybridization of Atomic Orbitals I

Hybridization of Atomic Orbitals I

The mathematical expression known as the wave function, ψ, contains information about each orbital and the wavelike properties of electrons in an isolated atom. When atoms are bound together in a molecule, the wave functions combine to produce new mathematical descriptions that have different shapes. This process of combining the wave functions for atomic orbitals is called hybridization and is mathematically accomplished by the linear combination of atomic orbitals. The new orbitals that...