Adsorption of Spherical Polyelectrolyte Brushes: from Interactions to Surface Patterning
نویسندگان
چکیده
منابع مشابه
Adsorption of Spherical Polyelectrolyte Brushes: from Interactions to Surface Patterning
By Christoph Hanske, Johann Erath, Christin Kühr, Martin Trebbin, Christian Schneider ,, Alexander Wittemann, and Andreas Fery1,∗ 1 Physical Chemistry II, University of Bayreuth, 95440 Bayreuth, Germany 2 Physical Chemistry I, University of Bayreuth, 95440 Bayreuth, Germany 3 F-I2 Soft Matter and Functional Materials, Helmholtz-Zentrum Berlin, 14109 Berlin, Germany 4 Department of Chemistry, Un...
متن کاملAdsorption of proteins on spherical polyelectrolyte brushes in aqueous solution
We consider the adsorption of bovine serum albumin (BSA) on spherical polyelectrolyte brushes (SPB). The SPB consist of asolid polystyrene core of 100 nm diameter onto which linear polyelectrolyte chains [poly(acrylic acid), (PAA)] are grafted. The adsorption of BSA is studied at a pH of 6.1 at different concentrations of added salt and buffer. We observe strong adsorption of BSA onto the SPB d...
متن کاملPolyelectrolyte-compression forces between spherical DNA brushes.
Optical tweezers are employed to measure the forces of interaction within a single pair of DNA-grafted colloids, dependent on the molecular weight of the DNA chains, and the concentration and valence of the surrounding ionic medium. The resulting forces are short range and set in as the surface-to-surface distance between the colloidal cores reaches the value of the brush height. The measured f...
متن کاملControlled Release of Proteins Bound to Spherical Polyelectrolyte Brushes
We discuss the interaction of proteins dissolved in aqueous solution with spherical polyelectrolyte brushes (SPB). The SPB consist of a solid core particle of colloidal dimensions (ca. 100 nm in diameter) onto which long polyelectrolyte chains have been grafted. Immersed in aqueous solution of proteins these SPB will take up high amounts of protein if the ionic strength is low. At high ionic st...
متن کاملInteractions between planar stiff polyelectrolyte brushes.
Molecular-dynamics simulations were performed for two opposing flat surfaces sparsely grafted with rigid polyelectrolyte chains whose lengths are smaller than their persistence lengths. The resulting force-distance dependence was analyzed theoretically in terms of two separate physical mechanisms: the pressure arising from osmotically active counterions trapped within the brush and the work req...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Zeitschrift für Physikalische Chemie
سال: 2012
ISSN: 2196-7156,0942-9352
DOI: 10.1524/zpch.2012.0265