## Abstract Size tunable amphiphilic NPs composed of poly(__γ__‐PGA) and hydrophobic amino acids, such as Phe or Trp, were prepared. To prepare these size‐regulated NPs, __γ__‐PGA‐__g__‐Phe or __γ__‐PGA‐__g__‐Trp dissolved in DMSO was added to various concentrations of NaCl solution. The __γ__‐PGA‐
Nanocomposites of Size-Tunable ZnO-Nanoparticles and Amphiphilic Hyperbranched Polymers
✍ Scribed by Thomas V. Richter; Fabian Schüler; Ralf Thomann; Rolf Mülhaupt; Sabine Ludwigs
- Publisher
- John Wiley and Sons
- Year
- 2009
- Tongue
- English
- Weight
- 374 KB
- Volume
- 30
- Category
- Article
- ISSN
- 1022-1336
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
Highly dispersed ZnO nanoparticles with variable particle sizes were successfully prepared within an amphiphilic hyperbranched polyetherpolyol matrix via decomposition of an organometallic precursor in the presence of air leading to stable nanocomposites. The high degree of stabilization during and after the synthesis by the polymer permits control over the nanoparticle size and therefore, due to the quantum‐size‐effect, the particle properties. Furthermore, these polymer‐inorganic nanocomposites can easily be dispersed in apolar solvents to yield highly transparent, stable solutions.
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## Abstract Amphiphilic thioether‐containing core‐shell polymers were synthesized by two‐step reaction of hyperbranched polyglycerol (PG): first the hydroxyls of PG were O‐alkylated with 1‐bromo‐3‐chloropropane by improved Williamson reaction, and 31.6% of the hydroxyls were transformed to allyl gr