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Chemoselective Modification of Viral Surfaces via Bioorthogonal Click Chemistry
Published on: August 19, 2012
Click-chemistry for surface modification of monodisperse-macroporous particles
Aslıhan Bayraktar1, Berna Saraçoğlu, Çiğdem Gölgelioğlu
1Hacettepe University, Chemical Engineering Department, Ankara, Turkey; Cumhuriyet University, Chemical Engineering Department, Sivas, Turkey.
Journal of Colloid and Interface Science
|October 4, 2011
Summary
Click chemistry effectively modifies particle surface properties, tuning hydrophilicity for controlled protein adsorption. This method enables precise surface engineering of monodisperse-macroporous particles.
Area of Science:
- Polymer Chemistry
- Surface Science
- Biomaterials Engineering
Background:
- Controlling surface properties of microparticles is crucial for applications in separation, drug delivery, and diagnostics.
- Tailoring surface hydrophilicity impacts biomolecule interactions, such as protein adsorption.
- Click chemistry offers a versatile platform for precise surface functionalization.
Purpose of the Study:
- To demonstrate click chemistry as a method for tuning the surface hydrophilicity of monodisperse-macroporous particles.
- To investigate the effect of surface modification on protein adsorption characteristics.
- To engineer particles with specific surface properties for targeted applications.
Main Methods:
- Synthesis of monodisperse-macroporous particles with reactive groups.
- Surface modification using click chemistry to attach hydrophobic or hydrophilic polymer brushes.
- Characterization of surface modifications using FTIR-DRS and contact angle measurements.
- Assessment of protein (albumin) adsorption onto bare and modified particles.
Main Results:
- Hydrophilic poly(glycidyl methacrylate-co-ethylene dimethacrylate) particles were hydrophobized by grafting poly(octadecyl acrylate-co-propargyl acrylate).
- Hydrophobic poly(4-chloromethylstyrene-co-divinylbenzene) particles were hydrophilized by grafting poly(vinyl alcohol).
- Surface polarity changes were confirmed by contact angle measurements.
- Protein adsorption was significantly altered: decreased from 225 to 80 mg/g for hydrophilized particles and increased from 50 to 400 mg/g for hydrophobized particles.
Conclusions:
- Click chemistry is an efficient and versatile tool for precisely controlling the surface polarity of microparticles.
- Surface modification via click chemistry allows for effective regulation of protein adsorption behavior.
- Engineered particles with tunable surface properties hold promise for various scientific and technological applications.
