Gold Particle Coating
Gold Particle Coating - Related Videos
10:38
Synthesis of Functionalized 10-nm Polymer-coated Gold Particles for Endothelium Targeting and Drug Delivery
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Cited by 8 •
2018
We describe a method of synthesizing biocompatible 10-nm gold nanoparticles, functionalized by coating poly-ethylene glycol onto the surface. These particles can be used in vitro and in vivo for delivering therapeutics to nanoscale cellular and extracellular spaces that are difficult to access with conventional nanoparticle sizes.
05:02
Growth of Gold Dendritic Nanoforests on Titanium Nitride-coated Silicon Substrates
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Cited by 5 •
2019
This study presents a feasible procedure for synthesizing gold dendritic nanoforests on titanium nitride/silicon substrates. The thickness of gold dendritic nanoforests increases linearly within 15 min of a synthesis reaction.
03:37
Subatomic Particles
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2020
Dalton was only partially correct about the particles that make up matter. All matter is composed of atoms, and atoms are composed of three smaller subatomic particles: protons, neutrons, and electrons. These three particles account for the mass and the charge of an atom. The Discovery of the Electron The first clue about the subatomic structure came at the end of the 19th century when J.J. Thomson discovered the electron using a cathode ray tube. This apparatus consisted of a sealed glass...
08:55
Hydroquinone Based Synthesis of Gold Nanorods
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Cited by 11 •
2016
This paper describes a protocol for the synthesis of gold nanorods, based on the use of hydroquinone as reducing agent, plus the different mechanisms for controlling their size and aspect ratio.
06:48
Synthesis and Characterization of Self-Assembled Metal-Organic Framework Monolayers Using Polymer-Coated Particles
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2024
A protocol for the synthesis and characterization of self-assembled metal-organic framework monolayers is provided using polymer-grafted, metal-organic framework (MOF) crystals. The procedure shows that polymer-grafted MOF particles can be self-assembled at an air-water interface resulting in well-formed, free-standing, monolayer structures as evidenced by scanning electron microscopy imaging.
FAQs
The coating’s composition controls which functional groups are presented at the particle surface, while its thickness changes how far those groups extend into the surrounding medium. Together, these features influence particle dispersion, interactions with biomolecules, and contact with cells. Researchers can therefore tune the interface to favor stability, recognition, or biomolecular binding rather than treating the gold surface as fixed.
Adsorption places coating molecules at the gold surface through surface interactions, whereas chemical attachment establishes a more direct chemical connection between the coating and the particle. This distinction affects how the interface is formed and how its properties are controlled. Selecting between these approaches depends on the desired surface behavior, including stability, available functional groups, and biomolecular binding requirements.
Thickness and composition influence different aspects of the particle interface. Composition determines the chemical features available for interactions, while thickness affects the spatial arrangement of those features and the particle’s contact with its surroundings. Adjusting both variables can change how particles disperse, bind biomolecules, interact with cells, and remain compatible with biological media.
A coated surface presents an altered interface to cells and biomolecules, so recognition depends on the molecules and functional groups exposed at that interface. The coating can provide sites for biomolecular binding or change how surrounding biological components interact with the particle. These effects help determine whether particles associate with cells, remain dispersed, or participate selectively in biological processes.
Researchers should match the coating’s composition and thickness to the intended biological function. A suitable design may prioritize compatibility with the surrounding medium, improved dispersion, controlled cellular interaction, or specific functional groups for biomolecular binding. Considering these properties together helps connect the coating choice with the desired outcome, such as sensing, delivery, imaging, or another biological application.
In biosensors, the coating can create or expose sites that support biomolecular binding while controlling how the particle interacts with the surrounding biological medium. This interface helps connect the gold particle with recognition processes relevant to sensing. Coating composition and thickness are therefore important design variables because they can influence binding behavior, particle dispersion, and compatibility within the biological system.
Coated gold particles support targeted delivery and imaging by modifying the surface that interacts with cells and surrounding biomolecules. The coating can improve compatibility, provide functional groups, or support biomolecular recognition, while its thickness helps regulate interactions at the particle boundary. These properties allow researchers to adapt the same gold-particle platform for different biological objectives and experimental contexts.