Colloidal stability of iron oxide nanoparticles with multivalent polymer surfactants

Recent Advances in Magnetite Nanoparticle Functionalization for Nanomedicine

“…Functionalization of magnetite nanoparticles with amphiphilic molecules (surfactants) has been proved as a good solution to improve the stability of the suspensions [204,205]. However, surfactants can rather have a toxic behaviour and are not recommended for biological applications [206][207][208].…”

The Effect of the Isomeric Chlorine Substitutions on the Honeycomb-Patterned Films of Poly(x-chlorostyrene)s/Polystyrene Blends and Copolymers via Static Breath Figure Technique

“…The conformational entropy, which can be related to the degree of order of the arrays, is defined as (Equation (1)):S=−∑nPn lnPn where n is the coordination number of each Voronoi, i.e., the number of sides of the polygon, and P n is the fraction of the polygons having the coordination number n . That is, Voronoi tessellation method calculates the probability of the occurrence of four ( P 4 ), five (( P 5 ), six—which is a perfectly hexagonal lattice—( P 6 ), seven ( P 7 ), or eight ( P 8 ) As a reference, for a perfectly ordered hexagonal array, i.e., an ideal hexagonal lattice, the conformational entropy is 0, whereas the entropy of a completely random pattern is 1.71 [18,39,40,41,42,43].…”

Fe3O4nanoparticles coated with a guanidinium-functionalized polyelectrolyte extend the pH range for phosphate binding

“…Given the importance of electrostatic interactions in the surface modication using polyelectrolytes, 33,46 we rst present and discuss the z-potential data of the PAH and PAH-Gu separately, and In contrast, PAH and PAH-Gu polyelectrolyte solutions remain positive over the whole investigated pH region. PAH-Gu shows a higher positive surface charge compared to the (unfunctionalized) PAH.…”

“…Receptor-functionalized polyelectrolytes (PEs) can bind to surfaces of opposite charge [30][31][32] and can contribute to nanoparticle stabilization, 33 while the receptor groups introduce selectivity for binding certain targets. Recent advances in this direction resulted in the availability of polyelectrolytes that were functionalized with, e.g., biotin, uorescent probes and guanidinium groups to address chelation and the selective capture of His-tagged proteins, 34,35 biosensing, 36 ngermark visualization, 37 and ion selectivity.…”