Lorenzo Ciccione, Mathias Sablé-Meyer, Esther Boissin, Mathilde Josserand, Cassandra Potier-Watkins, Serge Caparos, Stanislas Dehaene
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Scientific reports
adsorption kinetics human serum albumin hsa bare polylarginine pargmodified silica substrates investigated using reflectometry atomic force microscopy afm measurements carried various phs flow rates albumin concentrations 10 150 mm nacl solutions mass transfer rate constants maximum protein coverages determined bare silica ph 40 theoretically interpreted terms hybrid random sequential adsorption model results used reference data analysis adsorption kinetics larger phs shown adsorption bare silica rapidly decreased ph became negligible ph 74 albumin adsorption pargfunctionalized silica showed opposite trend ie negligible ph 4 attained maximum values ph 74 150 mm nacl conditions corresponding blood serum environment results interpreted evidence significant role electrostatic interactions albumin adsorption bare pargmodified silica also argued results serve useful reference data enabling proper interpretation protein adsorption substrates functionalized polyelectrolytes