Description
General Description
PLLA-PEG-NHS is a heterobifunctional biodegradable block copolymer consisting of poly(L-lactide) (PLLA), a hydrophilic polyethylene glycol (PEG) spacer, and a terminal N-hydroxysuccinimide (NHS) ester.
The hydrophobic PLLA block provides a biodegradable polymer domain suitable for forming polymeric nanoparticles, micelles, and other self-assembled nanostructures. The PEG segment improves aqueous dispersibility and colloidal stability while presenting the reactive NHS ester at the surface of the resulting nanocarrier.
The terminal NHS ester reacts readily with primary amines (–NH₂) on proteins, peptides, antibodies, amino-modified oligonucleotides, targeting ligands, and other molecules to form stable amide bonds. This provides a convenient strategy for introducing biological or targeting functionalities onto PLLA-PEG-based nanoparticles and materials.
PLLA-PEG-NHS is particularly useful for preparing ligand-targeted biodegradable nanoparticles, protein-polymer conjugates, functionalized surfaces, and advanced drug delivery systems.
Applications
- Polymeric nanoparticle preparation
- Polymeric micelle formation
- Amine-selective bioconjugation
- Protein conjugation
- Peptide conjugation
- Antibody conjugation
- Targeting ligand attachment
- Nanoparticle surface functionalization
- Targeted drug delivery
- Biomaterials research
Features and Benefits
- Biodegradable PLLA block
- Hydrophilic PEG spacer
- Amine-reactive NHS ester
- Efficient formation of stable amide bonds
- Suitable for proteins, peptides, and antibodies
- Self-assembly into nanoparticles and micelles
- Tunable PLLA and PEG molecular weights
- Suitable for surface functionalization
