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Preparation of Poly(pentafluorophenyl acrylate) Functionalized SiO2 Beads for Protein Purification
Published on: November 19, 2018
Reactive surface coatings based on polysilsesquioxanes: controlled functionalization for specific protein
Daniel Kessler1, Peter J Roth, Patrick Theato
1Institute of Organic Chemistry, University of Mainz, 55099 Mainz, Germany.
Langmuir : the ACS Journal of Surfaces and Colloids
|July 4, 2009
Summary
Researchers developed a versatile thin-film coating for biosensors. This strategy enables controlled immobilization of specific binding sites and proteins on various surfaces, advancing biosensor design.
Area of Science:
- Materials Science
- Biotechnology
- Surface Chemistry
Background:
- Reliable biosensor design hinges on controlled immobilization of biomolecular functions within thin films.
- Developing specific binding sites on planar surfaces is crucial for reproducible biosensor performance.
Purpose of the Study:
- To present a versatile strategy for creating reactive thin-film coatings for biosensor applications.
- To demonstrate the immobilization of specific binding sites and proteins onto various substrates using a novel polymer system.
Main Methods:
- Utilized poly(methylsilsesquioxane)-poly(pentafluorophenyl acrylates) (PMSSQ-PFPA) for thin-film coatings on gold, polycarbonate, PTFE, and glass.
- Employed amine solutions to immobilize specific binding sites (biotin, l-thyroxine, folic acid) onto the reactive surface.
- Characterized protein adsorption using surface plasmon resonance (SPR), FTIR, fluorescence spectroscopy, and AFM.
Main Results:
- Successfully created stable, adherent, reactive coatings on diverse materials.
- Demonstrated versatile attachment of various linkers for specific protein binding.
- Confirmed successful immobilization and adsorption of streptavidin, pre-albumin, and folate-binding protein.
Conclusions:
- The four-step protein immobilization strategy offers a reproducible method for creating functionalized biosensor surfaces.
- This approach holds significant potential for diverse applications in advanced biosensor development.
