PEI-Coated NaYF₄: Yb/Er

Description

PEI-Coated NaYF₄: Yb/Er Upconversion Nanomaterials

Material Information:
Chemical Composition: PEI-Coated NaYF₄: 60% Yb/2% Er
Crystal Structure: Hexagonal phase
Morphology: Spherical
Average Particle Size: ~25 nm
Optical Properties:
Emission Characteristics: Red & Green Upconversion Emission
Excitation at 980 nm:
Primary Emission Peak: 654 nm (Red)
Secondary Emission Peak: 541 nm (Green)
Surface & Dispersibility:
Water Dispersibility: Water-Soluble
Surface Functionalization: Polyethylenimine (PEI) Functionalized with Amine (-NH₂) Groups
Appearance:
Solid Form: White Powder
Solvent Options: Water or Ethanol

Key Features & Advantages:
PEI Functionalization for Enhanced Biocompatibility & Surface Modification:
Highly hydrophilic and stable in aqueous solutions
Facilitates biomolecule conjugation (DNA, antibodies, peptides, etc.)
Suitable for cellular and in vivo imaging applications
Efficient Red Upconversion Emission at 654 nm
High Ytterbium (Yb³⁺) Doping (60%) for Strong Upconversion Luminescence
Excellent Dispersibility in Water & Aqueous Solutions

Applications:
Bioimaging & Fluorescent Labeling:
Ideal for deep-tissue near-infrared (NIR) fluorescence imaging
Enables long-term cell tracking and molecular targeting
Biosensors & Immunoassays:
PEI-functionalized surface allows for covalent conjugation with biomolecules
Used in biosensors, immunoassays, and molecular diagnostics
Drug Delivery & Theranostics:
Potential for targeted drug delivery with functionalized nanoparticles
Enables simultaneous imaging and therapeutic applications
Optoelectronic Applications:
Utilized in infrared-responsive optical sensors and nanophotonic devices
Security Marking & Anti-Counterfeiting:
Red upconversion luminescence provides unique spectral signatures for authentication