Ridgehart Graphene N-doped Quantum Dots Powder (White–Light Yellow) – Ultra-Small (<10 nm), High-Purity Fluorescent Nanomaterial

Ridgehart Graphene Quantum Dots (GQDs) are ultra-small, highly fluorescent carbon-based nanomaterials engineered for high-performance optical, biological, and composite applications. Produced with tight size control and excellent purity, these GQDs exhibit lateral dimensions < 10 nm, a thickness range of 1–6 nm, and strong photoluminescence in aqueous systems. Their stable fluorescence and excellent water dispersibility make them ideal for bio-labeling, fluorescence materials, optoelectronic devices, and multifunctional composite systems.

Technical Specifications:

Appearance:

• White to light-yellow powder

Particle Characteristics:

• Thickness: 1–6 nm (AFM)
• Lateral Size: < 10 nm (AFM/TEM)

Optical Behavior:

• Bright photoluminescence under 365 nm UV light
• Strong, stable fluorescence in water
• Moderate fluorescence in ethanol (possible turbidity or precipitation)

Solvent Compatibility:

• Excellent dispersibility in water
• Slightly reduced dispersibility in ethanol; turbidity may occur

Characterisation Provided:

• PL spectra in water and ethanol
• TEM imaging of GQDs in solution
• AFM height profile
• Raman spectroscopy

Material Characteristics:

• Ultra-Small (<10 nm) Carbon Quantum Dots: Graphene QDs at this size exhibit strong quantum confinement effects, resulting in tunable and excitation-dependent fluorescence.
• High Chemical Stability: Stable in aqueous environments and compatible with polymer matrices, composites, and bio-functional systems.
• Bright UV-Responsive Fluorescence: Under 365 nm illumination, the dots emit strong visible fluorescence suitable for labeling, detection, and optical enhancement. 
• Clean, Stable Powder Form: Easily re-dispersed with sonication; suitable for high-purity research and industrial formulations.
• High-Quality Structural Integrity: AFM and TEM confirm uniform size distribution and consistent morphology across samples.

Key Advantages:

• Ultra-small size enabling strong quantum confinement
• Excellent water dispersibility for biological and optical applications
• Stable fluorescence under UV and visible excitation
• Suitable for composite enhancement, sensing, detection, and imaging
• High structural consistency verified by multiple analytical techniques

Storage Conditions:

Powder Form:

• Store sealed, dry, and protected from light at room temperature
• Highly moisture-sensitive
• Maximum storage period: 6 months

 Solutions:

• Prepare fresh dispersions when needed
• Sonicate at 700 W for 30 minutes before use
• Store solutions at 4°C, sealed and protected from light
• Maximum storage period: 6 months

Application Uses:

• Composite Materials: Enhances optical properties, conductivity, and mechanical performance of polymer, resin, and hybrid materials.
• Bio-Labeling & Imaging: Strong water-based fluorescence enables use in biological tagging, biosensing, and visualization pathways.
• Optoelectronic Devices: Suitable for LEDs, light-emitting films, photodetectors, and optical coatings.
• Fluorescent Materials: Can be incorporated into inks, coatings, detection systems, and anti-counterfeiting technologies.