gold nanocube aqueous

Product Name Gold nanocube aqueous Product Overview This product (Code: XFJ294) is a monodisperse gold nanocube aqueous solution modified with CTAB, using ultrapure water as the dispersion solvent. It features regular particle morphology, uniform and controllable size without irregular particles or agglomerated impurities. Prepared by a precise aqueous directional growth process, the product is coated with a cetyltrimethylammonium bromide (CTAB) cationic modification layer with positive surface charge. The colloidal dispersion system is uniform and stable, free from sedimentation and delamination during long-term storage. The liquid appears wine-red and transparent macroscopically, with a stable localized surface plasmon resonance (LSPR) characteristic absorption peak in the range of 525–535 nm. It possesses excellent and controllable optical, electrical and surface enhancement effects, as well as good biocompatibility and low cytotoxicity. It is a core scientific research material for frontier fields such as biosensing, SERS detection, optical imaging, nanocatalysis and biomedical labeling. Technical Parameter Particle Size <50 nm Surface Modifier CTAB Surface Charge : Positive Charge Solution Color:Wine-red Characteristic Absorption Peak 525–535 nm(UV-Vis) Product Features • Ultra-small Size and Highly Uniform Morphology: The particle size is strictly controlled within 50 nm. Adopting a directional and controllable growth process, the cubes have clear edges and corners and regular morphology without spherical, rod-shaped and other irregular impurity particles. The excellent monodispersity effectively ensures experimental repeatability and device performance stability. • CTAB Positive Charge Modification with Strong Adaptability: The uniform and stable CTAB cationic modification layer endows particles with stable positive electricity, which can efficiently combine with negatively charged biomolecules, polymer substrates and nanomaterials. It is suitable for various experimental processes such as biological coupling, layer-by-layer self-assembly and thin film deposition with uniform and controllable modification effect. Accurate and Stable Optical Performance: With highly unified size and morphology, the LSPR characteristic absorption peak is stably locked in the narrow range of 525–535 nm with uniform optical signal, sharp peak shape and no miscellaneous peak interference. The excellent plasma enhancement effect makes it a preferred material for high-precision optical detection and sensing experiments. • Pure Water System with Excellent Biocompatibility: Using ultrapure water as the dispersion medium, it has no organic solvent residue, low toxicity and good biocompatibility. It is suitable for biomedical scenarios such as cell experiments, biological labeling and in vivo detection, avoiding experimental interference and biological toxicity caused by organic reagents. • Accurate Concentration and High Batch Stability: The factory concentration is accurately calibrated to 0.05 mg/mL with 10 mL sterile quantitative packaging. The deviation of optical parameters and size between batches is extremely low. The colloid is not easy to settle and agglomerate after long-term standing, which greatly reduces experimental errors and is suitable for long-term scientific research iterative experiments. Application Fields • High-sensitivity SERS Detection Substrate: The unique angular structure of gold nanocubes can produce significant local electromagnetic field enhancement effect. The LSPR response in the visible light band of 525–535 nm is suitable for conventional laser excitation, and it is applied to high-precision SERS sensing scenarios such as trace pollutant detection, pesticide residue analysis, biological small molecule identification and food safety detection. • Biosensing and Biomedical Imaging: With excellent biocompatibility and stable optical signals, it can be used for biomedical research such as biological probe labeling, cell imaging, fluorescence enhancement detection and tumor targeted sensing. The positively charged surface is easier to combine with cell membranes and negatively charged biological macromolecules for higher detection sensitivity. • Optical and Refractive Index Sensors: Relying on the sensitive LSPR wavelength shift response characteristics, it can be used for the R&D and preparation of micro optical sensors, solution refractive index detectors and gas sensing devices, widely applied in environmental monitoring, precision optical detection and micro-nano optoelectronic sensing fields. • Nano Catalysis and Environmental Treatment: The ultra-fine cubic structure within 50 nm has large specific surface area and abundant surface active sites, with excellent photocatalytic and organic catalytic properties. It can be used for scientific research such as organic pollutant degradation, catalytic reaction mechanism research and preparation of new nano catalysts. • Functional Nano Thin Films and Devices: The pure water dispersion system is compatible with spin coating, spraying and self-assembly film-forming processes, and can prepare high-uniformity optoelectronic thin films and conductive nano-coatings, applied to the R&D of micro-nano optoelectronic devices, flexible electronics and intelligent sensing equipment. • Nanocomposite Material Modification: As a functional nano-filler, it can be doped into polymers, gels and thin film materials to significantly improve the optical response, electrical and thermal conductivity and biosensing performance of materials for the R&D of new functional composite materials. Related Information This product is non-toxic, but improper use may cause respiratory tract, eye irritation and direct contact can cause dry skin. Wear masks and gloves when using it. Please e-mail for the detailed characterization data. E-mail:sales@xfnano.com