{"product_id":"pvp-modified-gold-nanoparticles","title":"PVP modified gold nanoparticles","description":"\u003cp\u003eProduct Name PVP modified gold nanoparticles Product Overview PVP (Polyvinylpyrrolidone) is the most commonly used polymer coating agent, which relies on the coordination adsorption of carbonyl groups on the pyrrolidone ring and the surface of gold to stabilize gold nanoparticles through steric hindrance effect. Compared with sodium citrate modified gold nanoparticles, PVP AuNPs have colloidal stability, amphiphilicity, and good biocompatibility, making them important plasma nanomaterials in materials, catalysis, and biomedical fields. This product is coated with PVP on the basis of XFJ60. For the parameters of gold nanoparticles, please refer to XFJ60. Technical Parameter Concentration:0.05 mg\/mL Solvent:Water,Methanol,Ethanol Diameter 5 nm,10 nm,15 nm,20 nm,25 nm,30 nm,40 nm,50 nm,60 nm,70 nm,80 nm,90 nm,100 nm Stabilizer:PVP Appearance:Wine red solution Zeta Au NPs : -34.8 mV PVP-Au NPs : -2.88 mV Product Features 1) Excellent colloidal stability: The PVP polymer layer provides steric hindrance and is not easily agglomerated in high salt and wide pH environments; Different from the electrostatic stability of citrate ions, it has stronger tolerance to ion strength and is suitable for high ion strength buffers. 2) Amphiphilicity: Pyrrolidone groups are hydrophilic, alkyl carbon chains are hydrophobic; It is soluble in aqueous phase and can also be transferred to organic solvents such as methanol and ethanol, suitable for aqueous\/organic phase reaction systems. 3) Good biocompatibility: PVP is a polymer with good biocompatibility, and its modified gold nanoparticles can effectively resist non-specific adsorption of proteins in the blood, thereby avoiding rapid clearance by the immune system and prolonging circulation time in the body. Cell experiments have also confirmed its negligible cytotoxicity. Application Fields 1) Composite materials: PVP modified gold nanoparticles can be used as functional fillers, uniformly dispersed in polymer matrices such as epoxy resins, to prepare transparent nanocomposites with uniform color and adjustable optical properties, which can be used to develop new optical devices. 2) In the field of catalysis, gold nanoparticles themselves have catalytic activity, and PVP modification not only improves their stability, but also provides possibilities for their application in catalytic degradation of organic dyes and other reactions.\u003c\/p\u003e","brand":"xfnano","offers":[{"title":"10 mL D: 5 nm, C: 0.05 mg\/ml, Solvent: water 111160 \/ Store at 4°C refrigerated \/ 180days","offer_id":57280576487802,"sku":"111160","price":203.13,"currency_code":"USD","in_stock":true},{"title":"10 mL D: 8 nm, C: 0.05 mg\/ml, Solvent: water 111161 \/ Store at 4°C refrigerated \/ 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