Product Description
The BioDeviceLab 20 nm Water-Soluble Quantum Dots are advanced fluorescent nanomaterials designed for high-performance optical detection in biological and analytical applications. With a larger core size compared to smaller quantum dots, the 20 nm formulation provides enhanced brightness and emission intensity while maintaining narrow spectral bandwidth and strong resistance to photobleaching.
These quantum dots are surface-engineered with hydrophilic coatings that ensure long-term stability in aqueous buffers, cell culture media, and microfluidic systems. Their water-soluble chemistry enables seamless incorporation into biosensors, lab-on-chip devices, and fluorescence-based assays without aggregation or signal loss. The 200 mL volume supports extended experimental workflows, including high-throughput screening and large-scale biodevice validation.
Intended Use
This product is intended for research applications including:
• Fluorescence microscopy and imaging
• Multiplex biosensing and optical assays
• Flow cytometry and cell labeling
• Microfluidic and lab-on-chip integration
• Optical calibration and signal benchmarking
• Biodevice development and validation
Principle of Operation
Quantum dots exhibit size-dependent fluorescence based on quantum confinement effects:
• Optical excitation promotes electrons from the valence band to the conduction band.
• Radiative recombination produces size-tunable, narrow-band fluorescence emission.
• The 20 nm core size enables strong emission in the visible spectrum with high brightness.
• Surface passivation ensures water solubility and compatibility with biological systems.
Optical & Physical Characteristics
Core diameter: ~20 nm
Emission range: Visible spectrum (composition-dependent)
Quantum yield: High
Photostability: Excellent
Surface chemistry: Water-soluble, hydrophilic coating
Colloidal stability: High in aqueous buffers
Supplied volume: 500 mL
Selectivity & Compatibility
The narrow emission bandwidth of these quantum dots enables multiplexed detection with minimal spectral overlap. They are compatible with common bioconjugation strategies and can be integrated with antibodies, proteins, and nucleic acids for targeted sensing and imaging applications.
Package Contents
Each unit contains:
• 500 mL of 20 nm water-soluble quantum dot colloidal suspension
• Optical characterization and fluorescence profile documentation
Required Materials (Not Provided)
• Fluorescence microscope or plate reader
• Low-autofluorescence labware
• Standard laboratory pipettes and consumables
• Compatible aqueous buffers
Sample Handling & Use
• Gently invert the bottle before use to ensure uniform dispersion.
• Protect from prolonged exposure to strong light sources.
• Dilute with compatible buffers to achieve desired fluorescence intensity.
• Avoid freezing unless explicitly validated.
Quality Control
• Each production lot is characterized for emission peak, brightness, and size distribution.
• Batch-to-batch consistency supports reproducible imaging and biosensing workflows.
Storage & Stability
• Store at 4–25 °C, protected from light.
• Do not freeze unless otherwise specified.
• Stable over the stated shelf life when stored under recommended conditions.
Limitations
• For research use only.
• Not intended for diagnostic or therapeutic use.
• Optical properties may vary with surface chemistry and experimental conditions.
Applications
• Fluorescence microscopy and live-cell imaging
• Multiplex optical biosensors
• Flow cytometry and cell tracking
• Microfluidic fluorescence assays
• Biodevice calibration and benchmarking
