The adsorption behaviour of bovine serum albumin (BSA) on the surface of four different types of thiol monolayer was studied using a quartz-crystal microbalance (QCM) and cyclic voltammetry (CV). BSA was bound to the thiol monolayers with different efficiencies, depending on their surface properties. BSA was adsorbed more efficiently to hydrophobic thiol monolayers than to hydrophilic thiol monolayers. The electrostatic force of attraction or repulsion between the BSA molecules and the monolayer surface did not play a primary role in determining the adsorption behaviour of BSA. The binding of BSA was highly accelerated around its isoelectric point (pH 5.0).
- Bovine serum albumin
- Cyclic voltammetry
- Quartz- crystal microbalance
- Self-assembled thiol monolayer
ASJC Scopus subject areas
- Physical and Theoretical Chemistry