Surface Modification Chemistry
Surface Modification Chemistry - Related Videos
12:31
Chemoselective Modification of Viral Surfaces via Bioorthogonal Click Chemistry
0 Views •
Cited by 14 •
2012
Adenovirus particles are engineered to contain either the unnatural amino acid analogue azidohomoalanine or the azido sugar O-GlcNAz. The azide group of each is chemoselectively ligated via "click" chemistry reactions as a means of viral surface modification.
14:48
PDMS Device Fabrication and Surface Modification
0 Views •
Cited by 5 •
2007
10:54
Enzymatic Modification and Flow Cytometry Assessment of Yeast Surface Displayed Proteins
0 Views •
2025
Here, we introduce a protocol for using yeast surface-displayed substrates for enzymatic modification assays. The platform was demonstrated using the analysis of the dephosphorylation activity of tyrosine phosphatase SHP-2 against one of its substrates as a representative enzymatic modification assay.
06:15
Wet Chemistry and Peptide Immobilization on Polytetrafluoroethylene for Improved Cell-adhesion
0 Views •
Cited by 10 •
2016
Cell-adhesiveness is key to many approaches in biomaterial research and tissue engineering. A step-by-step technique is presented using wet-chemistry for the surface modification of the important polymer PTFE with peptides.
07:58
Bio-inspired Polydopamine Surface Modification of Nanodiamonds and Its Reduction of Silver Nanoparticles
0 Views •
Cited by 5 •
2018
A facile protocol is presented to functionalize the surfaces of nanodiamonds with polydopamine.
FAQs
The introduced molecular layer changes surface charge, wettability, adhesion, and reactivity, which alters how proteins and cells encounter the material. These changes can either promote or limit protein adsorption and cell attachment, depending on the interface being engineered. Controlling these interactions helps bioengineers guide cellular responses and improve the behavior of materials exposed to biological fluids.
These approaches differ in how new chemical functionality is placed at the material interface. Covalent attachment links molecules to the surface, adsorption places them through surface interactions, and activation methods prepare the interface for subsequent modification. Selecting among them allows researchers to tailor the outer molecular layer while preserving the bulk material’s properties.
Surface charge, wettability, adhesion, and reactivity are central design variables because they influence interactions with proteins, cells, biomolecules, and biological fluids. Adjusting these properties can affect whether cells attach, how biomolecules are recognized, and how the interface responds in a biological environment. Their relative importance depends on the intended material function and application.
A general workflow begins by identifying the desired biological interaction, selecting the surface chemistry that can influence it, and choosing molecules such as chemical groups, polymers, peptides, or other functional species. The selected material is then modified through covalent attachment, adsorption, or activation. The resulting interface is evaluated according to its intended biological performance.
Bioengineers apply it to implants, biosensors, drug-delivery systems, tissue scaffolds, and microfluidic devices. In each case, the modified interface can provide more control over protein adsorption, cell attachment, biomolecular recognition, or compatibility with biological fluids. This interface-level control may improve device performance without substantially changing the material’s underlying bulk properties.
Tailored surface chemistry can regulate how cells and biological molecules interact with an implant or scaffold, helping support more controlled cell attachment and tissue-related interactions. It can also reduce unwanted biological responses and improve compatibility with biological fluids. These effects are especially relevant when the bulk material is suitable mechanically but requires a more biologically appropriate outer surface.