{"title":"Grove Nanomaterials","description":"\u003cp\u003eGrove Nanomaterials is a Swansea University spin-out with laboratories in Cardiff. It makes gold colloids by physical deposition of metallic gold in the presence of the stabilising ligand, then disperses them in water. No gold salts, chemical reducing agents, CTAB or CTAC are used. Marixia supplies Grove's four gold colloids worldwide.\u003c\/p\u003e","products":[{"product_id":"grove-gold-pvp-red","title":"Grove Gold-PVP Red ~10 nm","description":"\u003cp\u003eQuasi-spherical gold nanoparticles (~10 nm) with a polyvinylpyrrolidone (PVP) surface, dispersed in water. The absorption peak is at ~525 nm, close to the 514 nm and 532 nm laser lines.\u003c\/p\u003e\n\u003cp\u003ePVP holds on to gold less strongly than thiols do, so thiol-terminated molecules can displace it when you functionalise the particles, though the exchange is not always complete. Grove lists plasmonics, optical assay development, nanoparticle–molecule interaction studies, and catalysis and electrocatalysis as research uses.\u003c\/p\u003e","brand":"Grove Nanomaterials","offers":[{"title":"10 mL at OD 1","offer_id":55481934184790,"sku":"GROVE-PVP-RED-10ML-OD1","price":199.5,"currency_code":"GBP","in_stock":true},{"title":"50 mL at OD 1","offer_id":55507207029078,"sku":"GROVE-PVP-RED-50ML-OD1","price":749.0,"currency_code":"GBP","in_stock":true},{"title":"100 mL at OD 1","offer_id":55507207061846,"sku":"GROVE-PVP-RED-100ML-OD1","price":1399.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1066\/2802\/2614\/files\/grove-gold-pvp-red-vial-v3.png?v=1790634712"},{"product_id":"grove-gold-pvp-blue","title":"Grove Gold-PVP Blue \u003c220 nm","description":"\u003cp\u003eAnisotropic gold platelets (\u0026lt;220 nm across) with a polyvinylpyrrolidone (PVP) surface, dispersed in water. The absorption peak is at ~580 nm and the band stays broad into the red: in Grove's example spectrum, absorbance at 633 nm is ~95% of the peak value, and ~50% at 785 nm.\u003c\/p\u003e\n\u003cp\u003eThat makes it a good starting point for SERS and plasmonic sensing with 633 nm excitation. Grove lists SERS substrate development, plasmonic sensing, optical coupling, morphology-dependent optics, and catalysis and electrocatalysis as research uses.\u003c\/p\u003e","brand":"Grove Nanomaterials","offers":[{"title":"10 mL at OD 1","offer_id":55481944867158,"sku":"GROVE-PVP-BLUE-10ML-OD1","price":199.5,"currency_code":"GBP","in_stock":true},{"title":"50 mL at OD 1","offer_id":55507209453910,"sku":"GROVE-PVP-BLUE-50ML-OD1","price":749.0,"currency_code":"GBP","in_stock":true},{"title":"100 mL at OD 1","offer_id":55507209486678,"sku":"GROVE-PVP-BLUE-100ML-OD1","price":1399.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1066\/2802\/2614\/files\/grove-gold-pvp-blue-vial-v3.png?v=1790634740"},{"product_id":"grove-gold-peg-blue","title":"Grove Gold-PEG Blue \u003c220 nm","description":"\u003cp\u003eAnisotropic gold platelets (\u0026lt;220 nm across) with a polyethylene glycol (PEG) surface, dispersed in water. Its absorption band is the broadest in the range: in Grove's example spectrum, absorbance at 785 nm, the usual near-infrared Raman line, is ~80% of the peak value.\u003c\/p\u003e\n\u003cp\u003eChoose it over Gold-PVP Blue when you need a PEG surface. PEG is widely used to reduce non-specific protein adsorption in biological media; how well it does so depends on how densely it covers the particles, so test it in your own medium. Grove lists plasmonic sensing, nanoparticle assembly and polymer-mediated interfaces as research uses.\u003c\/p\u003e","brand":"Grove Nanomaterials","offers":[{"title":"10 mL at OD 1","offer_id":55481945882966,"sku":"GROVE-PEG-BLUE-10ML-OD1","price":199.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1066\/2802\/2614\/files\/grove-gold-peg-blue-vial-v3.png?v=1790634769"},{"product_id":"grove-gold-l-cysteine-fluorescent-red","title":"Grove Gold-L-Cysteine Fluorescent Red ~4 nm","description":"\u003cp\u003eGold nanoparticles (~4 nm) capped with L-cysteine, dispersed in water. The absorption peak is in the near ultraviolet at ~370 nm and the red emission peak is at ~645 nm, ~275 nm apart, so a long-pass filter that rejects your UV excitation and transmits the emission band separates the emission cleanly. The colloid looks milky white in ordinary light and glows red under a UV lamp.\u003c\/p\u003e\n\u003cp\u003eL-cysteine binds to gold through sulfur, leaving carboxyl and amine groups available; EDC\/NHS activates the carboxyl groups for coupling to primary amines. Because the surface also carries amines, activated particles can link to each other, so work at a low particle concentration and remove excess EDC before adding your protein. Grove lists fluorescent sensing, optical assays and biointerfaces as research uses.\u003c\/p\u003e","brand":"Grove Nanomaterials","offers":[{"title":"10 mL at OD 1","offer_id":55481946440022,"sku":"GROVE-LCYS-RED-10ML-OD1","price":199.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1066\/2802\/2614\/files\/grove-l-cysteine-ambient-uv-v3.png?v=1790634803"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1066\/2802\/2614\/collections\/grove-nanomaterials-logo.png?v=1790285038","url":"https:\/\/marixiascientific.com\/collections\/grove-nanomaterials.oembed","provider":"Marixia Scientific","version":"1.0","type":"link"}