Silanol surface, amino-functional

Chatteijee, A., Balaji, T., Matsunaga, H., and Mizukami, F. 2006. A reactivity index study to monitor the role of solvation on the interaction of the chromophores with amino-functional silanol surface for colorimetric sensors. J. Mol. Graphics Model. 25 208-218. 

Fig. 8.n Covalent coupling of trypsin to a silicon surface. In a first step, free silanol groups are reacted with 3-amino-propyltriethoxysilane. The amino-functionalized surface is then treated with 2,4,6-trichloro-1,3,5-triazine (cyanuric chlorid). Finally, trypsin is covalently bound via a free amino group of the protein. 

The silanol groups on the particle surface can then be functionalized following several different methods. Synthesized nanoparticles can be reacted with commercially available alkoxysilane derivatives bearing thiol or amino groups.28,29 Alternatively, they can be added to the microemulsion reaction mixture to obtain surface... 

After cross-linking of the VFA and BVU on the silica particle surface the IEP shifts from pH 3 (bare silica) to pH 5 (PVFA-co-PBVU/silica). The shape of the function = (pH) remains unchanged. It can be assumed that the silanol groups on the silica surface are weakly shielded by the adsorbed sections of the cross-linked polymer because covalent attachment of the polymer does not take place [63, 73]. Strong effects can be seen after conversion of the formamide groups into amino groups. The IEP is shifted into the... 

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