ABSTRACT
204DNA can easily be adsorbed to positively charged surfaces as well as to negatively charged surfaces by electrostatic bridges with the water of hydration of charged cations. The functional groups and the pore structure and surface charge are all the important parameters for DNA adsorption. DNA adsorption to alumina, clay, silica, single-walled carbon nanotubes (SWNT), metals, organic and bioorganic molecules, polypyrrole (PPy)-silica nanocomposite particles, polymers and hydrogels, poly-L-lysine-immobilized pHEMA, and HAP are reviewed in this chapter. The experimental results for preparation and characterization of silica, alumina, and HAP are reported in detail.
