Star-shaped with tips that enhance electromagnetic fields, ideal for SERS and photothermal applications.
GOLD NANOSTRUCTURES
We produce gold nanostructures—materials composed of gold structured at the nanoscale—that can be developed in various forms, such as spheres, rods, cubes and stars. Each form exhibits unique physical and chemical properties determined by its size and shape.
Gold nanostructures are typically synthesized via chemical reduction methods, where Au³⁺ ions are reduced to Au⁰ atoms. Stabilizing agents like citrate, CTAB, or PVP are used to prevent aggregation and control particle growth. Key synthesis parameters such as temperature, pH, and reactant concentration directly influence the size, shape, and surface chemistry of the resulting nanostructures.
The choice of stabilizer (e.g., citrate, CTAB, PVP) plays a critical role in determining nanoparticle morphology and dispersion. These agents adsorb on the surface of forming nanoparticles, regulating growth direction and preventing agglomeration.
Gold nanostructures exhibit strong light-matter interactions due to localized surface plasmon resonance (LSPR). LSPR arises from the collective oscillation of surface electrons in resonance with incident light, leading to intense scattering and absorption.
The LSPR frequency and optical behavior are highly tunable based on particle size, shape, and the surrounding dielectric environment. This makes gold nanostructures ideal for applications in sensing, imaging, and photothermal therapy.
LSPR in gold nanostructures enables optical responses in the visible to near-infrared spectrum, offering flexibility for various technological and biomedical applications.
By adjusting synthesis parameters, gold nanostructures can be engineered into spheres, rods, stars, or cages, each with distinct optical and physicochemical properties.
APPLICATIONS:
Gold nanostructures have a wide array of applications, made possible by their unique properties:
Due to their excellent electrical conductivity and stability, gold nanostructures are being explored for use in electronic applications, including conductive inks, transistors, and components in data storage devices.
The large surface area and high surface energy of gold nanostructures make them excellent catalysts for various chemical reactions, including those important in environmental and industrial processes.
Gold nanostructures are key components in biosensing techniques for detecting proteins, DNA, and other biomolecules. Their strong surface plasmon resonance enhances signals in surface-enhanced Raman scattering (SERS) and metal-enhanced fluorescence (MEF), which are used for sensitive detection in diagnostic assays.
They are extensively used in biomedical fields for targeted drug delivery systems, where they can be designed to attach to specific cell types and deliver drugs directly into the cells. They are also used in photothermal therapy, where the nanostructures are heated by infrared light to kill cancer cells selectively.
PRODUCTS
Elongated particles favored in photothermal therapy and optical imaging because of their tunable
Spherical structures used in drug delivery and diagnostic assays due to their strong optical absorption and scattering.
Cube-shaped with high surface area, suitable for catalysis and environmental monitoring.
Gold Nanostructure Solutions
Searching for reliable and high-performance gold nanostructures tailored to your research or industrial goals? Our customizable solutions offer precise control over size, shape, and surface chemistry—ideal for applications in biosensing, photothermal therapy, catalysis, electronics, and beyond. Reach out to us today to learn how our gold nanomaterials can empower your next innovation.