Tailor‐Made Ligands for Biocompatible Nanoparticles

Abstract

Designer jackets: Polydentate amino‐functionalized poly(ethylene oxide)s with various block lengths are synthesized and used for ligand exchange and phase transfer of quantum dots and magnetic nanoparticles (see scheme; TEM images of the particles before and after the exchange are also shown). The ligands enable the transfer of the previously water‐insoluble particles into aqueous media.

Nanopartikuläre Funktionsmaterialien

“…[83] Interessante Aspekte bietet hier die Verwendung von SiO 2 als Schale auf klassischen II-VI-Halbleiterquantenpunkten. Durch geeignete Oberflächenfunktionalisierung kann schließlich auch eine effektive Formkontrolle erreicht werden, die die Synthese sphärischer, keilförmiger, zylindrischer oder stäbchenförmiger Quantenpunkte einschließt.…”

Magnetic Iron Oxide Nanoworms for Tumor Targeting and Imaging

“…Several methods to construct 1D assemblies of nanocrystals have been reported in recent years, for example involving the use of molecular coatings or biotemplates. [40][41][42] These approaches provide a means to control the chain-like nanostructures more precisely, although in vivo properties of such materials have not yet been characterized. …”

Routes to Nanoparticle-Polymer Superlattices

“…A more versatile method uses polymer chains containing a ligand end-group that binds to the nanoparticle surface. The attachment of brush-like polymer layers onto nanoparticles has recently been demonstrated for polyethylene glycol and polystyrene by using a ligand exchange procedure [25]. The attachment of polymer chains leads to an increased separation of nanoparticles as shown in Figure 7.…”