Description
Gold Nanorods, PEG Coated are nanoscale structures composed of gold with an elongated rod-like shape. Gold nanorods are nanostructures with distinct optical and electronic properties arising from their unique shape and size. The longitudinal surface plasmon resonance (SPR) of gold nanorods, which occurs due to the collective oscillation of free electrons along the long axis of the rods, leads to strong absorbance and scattering of light in the visible to near-infrared (NIR) region. This property makes them particularly useful in various biomedical and nanotechnology applications, including imaging, sensing, and therapy. PEG is a hydrophilic polymer commonly used to coat nanoparticles to improve their stability, biocompatibility, and circulation time in biological systems. PEG coating prevents nonspecific protein adsorption onto the nanoparticle surface, reduces recognition and clearance by the immune system, and minimizes aggregation and toxicity. Additionally, PEGylation can enhance the colloidal stability of nanoparticles in physiological environments and promote their accumulation in tumors via the enhanced permeability and retention (EPR) effect.