{"product_id":"graphene-quantum-dots-powder-red-fluorescence-ridgehart-high-purity-gqds-for-composites-and-optoelectronics","title":"Graphene Quantum Dots Powder – Red Fluorescence | Ridgehart High-Purity GQDs for Composites and Optoelectronics","description":"\u003cp\u003e\u003cstrong data-start=\"389\" data-end=\"445\"\u003eRidgehart™ Red-Emitting Graphene Quantum Dots (GQDs)\u003c\/strong\u003e are advanced carbon nanomaterials engineered for optical, electronic, and composite applications. These ultra-small (\u0026lt;10 nm), brownish-black graphene nanodots exhibit strong red fluorescence (emission ≈641 nm) when excited around 560 nm. Functionalized with –COOH, –OH, and –NH₂ surface groups, they provide excellent dispersibility, tunable optical performance, and high chemical stability for use in \u003cstrong data-start=\"848\" data-end=\"909\"\u003ecomposite materials, coatings, and optoelectronic devices\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong data-end=\"772\" data-start=\"732\"\u003eUltra-Small Particle Size (\u0026lt; 10 nm):\u003c\/strong\u003e Ensures uniform dispersion, quantum confinement, and high photoluminescence stability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong data-end=\"875\" data-start=\"862\"\u003eSolvents:\u003c\/strong\u003e DMF, DMSO, EG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong data-end=\"915\" data-start=\"892\"\u003eFluorescence Colour:\u003c\/strong\u003e Red\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong data-end=\"960\" data-start=\"922\"\u003eExcitation \/ Emission Wavelengths:\u003c\/strong\u003e 560 nm \/ ≈ 641 nm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong data-end=\"1011\" data-start=\"981\"\u003eSurface Functional Groups:\u003c\/strong\u003e –COOH, –OH, –NH₂\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong data-end=\"1046\" data-start=\"1031\"\u003eAppearance:\u003c\/strong\u003e Brownish-black powder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong data-end=\"1082\" data-start=\"1071\"\u003ePurity:\u003c\/strong\u003e ≥ 99 %\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong data-end=\"1114\" data-start=\"1092\"\u003eThermal Stability:\u003c\/strong\u003e Stable up to ~200 °C (TGA verified)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-end=\"1474\" data-start=\"1454\"\u003e\n\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong data-end=\"1474\" data-start=\"1458\"\u003eKey Features:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong data-end=\"1506\" data-start=\"1478\"\u003e\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong data-end=\"1184\" data-start=\"1157\"\u003eFunctionalised Surface:\u003c\/strong\u003e Hydroxyl, amino, and carboxyl groups improve chemical reactivity, dispersion, and bonding with polymers and composites.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong data-end=\"1337\" data-start=\"1307\"\u003eRed Fluorescence Emission:\u003c\/strong\u003e Bright, stable red luminescence under 560 nm excitation—ideal for red-emitting materials and optical tagging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong data-end=\"1481\" data-start=\"1450\"\u003eHigh Solvent Compatibility:\u003c\/strong\u003e Easily dispersible in DMF, DMSO, and ethylene glycol for solution or coating preparation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong data-end=\"1610\" data-start=\"1574\"\u003eThermally and Chemically Stable:\u003c\/strong\u003e Maintains structure and fluorescence under diverse synthesis or processing conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong data-end=\"1741\" data-start=\"1700\"\u003eEnvironmentally Friendly Composition:\u003c\/strong\u003e Metal-free, carbon-based nanomaterial offering safer handling than heavy-metal QDs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong data-end=\"1866\" data-start=\"1828\"\u003eExcitation-Dependent Fluorescence:\u003c\/strong\u003e Emission can shift with excitation wavelength, enabling colour-tunable optical design.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong data-end=\"2197\" data-start=\"2183\"\u003eAdvantages:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-end=\"2271\" data-start=\"2201\"\u003eHigh chemical and thermal stability suitable for polymer processing.\u003c\/li\u003e\n\u003cli data-end=\"2271\" data-start=\"2201\"\u003eUniform size distribution ensures reproducible optical performance.\u003c\/li\u003e\n\u003cli data-end=\"2271\" data-start=\"2201\"\u003eExcitation-dependent fluorescence enables wavelength tuning.\u003c\/li\u003e\n\u003cli data-end=\"2271\" data-start=\"2201\"\u003eCompatible with polymers, epoxy resins, and conductive films.\u003c\/li\u003e\n\u003cli data-end=\"2271\" data-start=\"2201\"\u003eLow cytotoxicity; safe for lab-scale optoelectronic studies.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong data-end=\"2574\" data-start=\"2550\"\u003e\u003cstrong data-end=\"2371\" data-start=\"2348\"\u003eStorage Conditions:\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp data-end=\"2882\" data-start=\"2811\"\u003e\u003cstrong data-end=\"2574\" data-start=\"2550\"\u003eStore in a dry, dark environment at 4 °C, sealed tightly to prevent moisture exposure. For dispersions, sonicate at 700 W for 30 minutes in DMF, DMSO, or EG immediately before use. Recommended shelf life: 6 months under proper storage once unsealed.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3 data-end=\"2651\" data-start=\"2630\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong data-end=\"2651\" data-start=\"2630\"\u003eApplication Uses:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp data-end=\"3596\" data-start=\"2653\"\u003e\u003cstrong data-end=\"2677\" data-start=\"2653\"\u003eComposite Materials:\u003c\/strong\u003e Enhances electrical conductivity, fluorescence, and mechanical strength in epoxy, polymer, or hybrid composites.\u003cbr data-end=\"2793\" data-start=\"2790\"\u003e\u003cstrong data-end=\"2806\" data-start=\"2793\"\u003eCoatings:\u003c\/strong\u003e Used in luminescent and anti-corrosion coatings; adds red fluorescence and photo-resistance.\u003cbr data-end=\"2902\" data-start=\"2899\"\u003e\u003cstrong data-end=\"2929\" data-start=\"2902\"\u003eOptoelectronic Devices:\u003c\/strong\u003e Suitable for LEDs, photodetectors, solar cells, and display technologies requiring red emission.\u003cbr data-end=\"3029\" data-start=\"3026\"\u003e\u003cstrong data-end=\"3062\" data-start=\"3029\"\u003eFluorescent Probes \u0026amp; Sensors:\u003c\/strong\u003e For red-region fluorescence imaging, pH or ion detection, and anti-counterfeiting inks.\u003cbr data-end=\"3153\" data-start=\"3150\"\u003e\u003cstrong data-end=\"3172\" data-start=\"3153\"\u003eEnergy Storage:\u003c\/strong\u003e As an additive for conductive enhancement in electrodes or supercapacitors.\u003cbr data-end=\"3251\" data-start=\"3248\"\u003e\u003cstrong data-end=\"3289\" data-start=\"3251\"\u003ePhotocatalysis \u0026amp; Electrocatalysis:\u003c\/strong\u003e Facilitates visible-light reactions for pollutant degradation and CO₂ reduction.\u003cbr data-end=\"3373\" data-start=\"3370\"\u003e\u003cstrong data-end=\"3411\" data-start=\"3373\"\u003eSurface Functionalisation Studies:\u003c\/strong\u003e Model system for molecular attachment, charge transfer, and surface energy research.\u003cbr data-end=\"3499\" data-start=\"3496\"\u003e\u003cstrong data-end=\"3526\" data-start=\"3499\"\u003eResearch \u0026amp; Development:\u003c\/strong\u003e Ideal for photonic, composite, and nanomaterial innovation studies.\u003c\/p\u003e\n\u003cp data-end=\"3690\" data-start=\"3598\"\u003eMany more application uses — please enquire for custom formulations or dispersion options.\u003c\/p\u003e","brand":"Ridgehart ","offers":[{"title":"50 Milligrams(Mg)","offer_id":55916850315596,"sku":null,"price":500.0,"currency_code":"GBP","in_stock":true},{"title":"100 Milligrams(Mg)","offer_id":55916850348364,"sku":null,"price":800.0,"currency_code":"GBP","in_stock":true},{"title":"500 Milligrams(Mg)","offer_id":55916850381132,"sku":null,"price":3000.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0988\/9107\/1820\/files\/RBottle2Square_7667baa7-d99d-4a8b-ac37-de930ea99b1b.jpg?v=1762958887","url":"https:\/\/www.ridgehart.com\/products\/graphene-quantum-dots-powder-red-fluorescence-ridgehart-high-purity-gqds-for-composites-and-optoelectronics","provider":"Ridgehart","version":"1.0","type":"link"}