Product Description
The BioDeviceLab 100 nm Water-Soluble Quantum Dots are large-diameter fluorescent nanocrystals designed for applications that demand maximum photon output and high contrast optical readouts. The increased nanocrystal size provides enhanced absorption cross-section and elevated emission intensity compared to smaller quantum dots, making them particularly suitable for macroscopic imaging, bulk fluorescence assays, and device-level optical interrogation.
These quantum dots are surface-engineered with hydrophilic, water-soluble coatings that ensure excellent colloidal stability in aqueous buffers, biological media, and microfluidic environments. Their resistance to photobleaching enables prolonged imaging and repeated excitation cycles without significant signal degradation.
The 500 mL bulk format supports large-scale workflows including extended imaging experiments, high-throughput screening, and system-level validation of fluorescence-based biosensors and lab-on-chip platforms.
Intended Use
This product is intended for research applications including:
• High-intensity fluorescence imaging
• Optical biosensing and signal amplification
• High-throughput fluorescence assays
• Device-level optical calibration
• Microfluidic and lab-on-chip integration
• Biodevice validation and benchmarking
Principle of Operation
Quantum dots exhibit size-dependent fluorescence governed by quantum confinement effects:
• Optical excitation promotes electrons to higher energy states.
• Radiative recombination produces intense, narrow-band fluorescence emission.
• Larger quantum dots provide higher brightness and improved absorption efficiency.
• Surface passivation enables water solubility and biological compatibility.
Optical & Physical Characteristics
Core diameter: ~100 nm
Emission range: Visible spectrum (composition-dependent)
Quantum yield: Very 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 supports multiplex detection with minimal spectral overlap. The surface chemistry is compatible with proteins, antibodies, and nucleic acids, enabling conjugation for targeted imaging and biosensing applications.
Package Contents
Each unit contains:
• 500 mL of 100 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 before use to ensure uniform dispersion.
• Protect from prolonged exposure to intense light sources.
• Dilute using compatible buffers as needed.
• Avoid freezing unless explicitly validated.
Quality Control
• Each production lot is characterized for emission intensity, peak position, and colloidal stability.
• Batch-to-batch consistency supports reproducible optical measurements.
Storage & Stability
• Store at 4–25 °C, protected from light.
• Do not freeze unless otherwise specified.
• Stable under recommended storage conditions for the stated shelf life.
Limitations
• For research use only.
• Not intended for diagnostic or therapeutic applications.
• Optical performance may vary depending on surface chemistry and experimental conditions.
Applications
• High-brightness fluorescence imaging
• Optical biosensors and signal amplification
• High-throughput screening assays
• Microfluidic fluorescence systems
• Biodevice calibration and benchmarking
