CD Bioparticles offers a range of basic silica particles in a variety of sizes, which have a hydrophilic surface with terminal hydroxyl groups without any additional functional groups on the surface. The hydroxyl groups give silica colloids a large negative zeta potential at neutral and basic pH.
Since the presence of a large number of hydroxyl groups in different states on the particle surface makes the silica particles hydrophilic, oleophobic and easy to agglomerate, it is necessary to functionally modify them to improve the performance and application range. Silica surfaces are versatile and can be easily modified to attach specific functional groups. In addition, the nanoporous structure of silica allows moderate molecular weight molecules, such as fluorophores, to be loaded into the silica shell. https://www.cd-bioparticle...