60nm Gold Nanostars: LSPR peak 900-950nm, core diameter 60nm, branches

NanoBrand offers Gold Nanostars products line with the peak of absorbance available in the range of 600-1100nm. By changing the core diameter to branch length ratio, we can create customized Nanostars products for our clients. Gold Nanostars are distributed in Milli-Q water and their surface is coated with a surface coating agent (e.g. PVP, chitosan, etc. ) for increased stability. Evaluation of the nanostars average core diameter and average length of the branches is made based on the analysis of TEM images specifically for each lot. Estimations of the nanoparticles mass and concentration are based on a representation of a nanostar as a solid spherical nanoparticle having an equivalent diameter D_equiv, which is assumed to be equal to the diameter of the nanoparticles core D_core plus 1/2 of the average branches lengths L_br.: D_equiv = D_core +2*L_br/2

NanoBrand Gold Nanostars offer several key advantages for Life Science applications:

Consistent Optical Properties: The uniform size distribution results in consistent and predictable optical properties, crucial for many sensing and imaging applications.

Absence of Additional Stabilizing Agents: Our nanoparticles are reactant free. The nanoparticles are dispersed in Milli-Q water (18.1 MΩ-cm) and have long-term dispersion stabilities, without any need for additional stabilizers, which may be potentially interfering. Alternatively, the nanoparticles available on the market are often dispersed in various stabilizers such as Tweens, PBS or proprietary stabilizers of unknown formulation.

Precise Reproducibility of the Lots: Consistent nanoparticles properties are essential for meeting regulatory standards in biomedical and pharmaceutical applications. In commercial products, such as lateral flow assays, batch-to-batch variations can affect product performance and reliability. In research, inconsistent nanoparticles properties between batches also affect research validity and can lead to irreproducible results.

Eco-friendly Synthesis: Our Green Chemistry approach minimizes the use of harsh reagents and reduces the environmental impact of nanoparticle production, aligning with sustainable research practices.

Please note that NanoBrand Gold Nanostars having sharp anisotropic spikes extending from a central core, are not equivalent to Gold Nanourchins, having rounded raspberry-like morphology. Both nanostructures leverage plasmonic enhancements, but cater to different niches in nanotechnology-driven biomedicine and sensing.

Storage: Store at 4-25grad C away from light - DO NOT FREEZE. Shake the bottle before use. Storage at lower temperatures is preferable for increasing the shelf life. During storage, the LSPR peak may slightly change its position within the specified range (e.g. 800-850nm), moving to the side of shorter wavelengths.

Expiration: Gold Nanostars Products keep their properties for at least six months. If kept longer, the peak of absorbtion may move out of the specified LSPR peak range. Measurement of UV-vis spectra is recommended to confirm products stability.

Safety and Handling: NanoBrand does not guarantee the suitability of its products for any particular application. It is the customer’s sole responsibility, prior to use, to determine that the product is suitable and permitted for the customer’s intended use and application. Please consult our Terms and Conditions.

For Gold Nanostars products, customized morphologies/ LSPR peak positions/ concentrations/ surface coatings are available on request.