Synthesis and applications of hyperbranched polyesters—preparation and characterization of crystalline silver nanoparticles

  title={Synthesis and applications of hyperbranched polyesters—preparation and characterization of crystalline silver nanoparticles},
  author={Zhendong Zhu and Luo Kai and Yuechuan Wang},
  journal={Materials Chemistry and Physics},
Synthesis of gold nanoparticles in hyperbranched polyol dispersions
In this study, a series of different generation hyperbranched poly(amine-ester) with hydroxyl as terminal group were synthesized and used as protectants to synthesize gold nanoparticles with a facile
Methoxycarbonyl-terminated hyperbranched poly(amine-ester) as templates for synthesis of silver nanoparticles
Highly stable and spherical silver nanoparticles, stabilized by methoxycarbonyl-terminated hyperbranched poly(amine-ester) (HPAE-COOCH3), were synthesized in water with reducing AgNO3/HPAE-COOCH3
Preparation of linoleic acid-capped silver nanoparticles and their antimicrobial effect.
Silver nanoparticles have been prepared through the chemical reduction of silver ions by ethanol using linoleic acid as a stabilising agent and show antimicrobial activity against Escherichia coli and Staphylococcus aureus.
Synthesis of core-shell silver–polyaniline nanocomposites by gamma radiolysis method
Core-shell silver (Ag)–polyaniline (PAni) nanocomposites have been synthesized by the in-situ gamma radiation-induced chemical polymerization method. Aqueous solution of aniline, a free-radical
Synthesis and spectroscopic characterisation of silver–polyaniline nanocomposite
Abstract Nanocomposite of silver–polyaniline (Ag–PANI) has been synthesised by the in situ chemical polymerisation method using ammonium persulphate as an oxidising agent in the presence of sulphonic
UV‐curing synthesis of sulfonated polyaniline‐silver nanocomposites by an in situ reduction method
Sulfonated polyaniline-silver (SPAni-Ag) hybrid nanocomposites have been synthesized by the in situ reduction using a UV-curing polymerization method without using any reducing or binding agent. An
Nanosilver/hyperbranched polyester (HBPE): synthesis, characterization, and antibacterial activity
HBPE of different generations were synthesized using 4-hydroxybenzoic acid and 2,2′,2″-nitrilotriethanol via the A2 + B3 method. The reaction was carried out in a dry nitrogen atmosphere using
Growth of Ag nanoparticles using plasma-modified multi-walled carbon nanotubes.
High-resolution x-ray photoelectron spectroscopy is used to characterize the functional groups on the surface of the MWNTs after chemical modification through plasma treatment, and demonstrates that the growing amount of the Ag nanoparticles on the nanotubes increases with the Ag(+) chelating concentration due to the blocking effect of theAg particles forming on the MW NTs.


Shape-Controlled Synthesis of Gold and Silver Nanoparticles
Monodisperse samples of silver nanocubes were synthesized in large quantities by reducing silver nitrate with ethylene glycol in the presence of poly(vinyl pyrrolidone) (PVP), characterized by a slightly truncated shape bounded by {100, {110}, and {111} facets.
Influence of pH on dendrimer-protected nanoparticles
Highly stable, isolated, and monodisperse Ag nanoparticles, protected by poly(amidoamine) (PAMAM) dendrimers, were prepared via direct chemical reduction to allow for a complete understanding of previously reported difficulties in preparing nanoparticles by this method.
Shape-Controlled Synthesis of Silver Nanoparticles by Pulse Sonoelectrochemical Methods
Shaped silver nanoparticles with spheres, rods, and dendrites have been prepared by a pulse sonoelectrochemical technique from an aqueous solution of AgNO3 in the presence of nitrilotriacetate
Preparation of Catalytically Active Palladium Nanoclusters in Compartments of Amphiphilic Hyperbranched Polyglycerols
Transition metal clusters and colloids of narrow particle size distributions in the range 1-10 nm are currently subject to intense research efforts. 1 From a fundamental perspective, the transition
Shape‐Selective Synthesis of Palladium Nanoparticles Stabilized by Highly Branched Amphiphilic Polymers
Despite the current broad interest in such materials, the synthesis of defined structures in the size range of 10 nm to ca. 1 μm (“mesoscopic”) is challenging. Few routes shape‐selectively afford
Palladium Nanoparticles Supported on Hyperbranched Aramids: Synthesis, Characterization, and Some Applications in the Hydrogenation of Unsaturated Substrates
Hyperbranched (HB) aromatic polyamides (aramids), synthesized from A2 + B3 reagents (A = p-phenylenediamine; B = trimesic acid), have been used as polymeric supports for palladium(0) nanoparticles.
Size-selective hydrogenation of olefins by Dendrimer-encapsulated palladium nanoparticles
Nearly monodisperse (1.7 ± 0.2 nm) palladium nanoparticles were prepared within the interiors of three different generations of hydroxyl-terminated poly(amidoamine) (PAMAM) dendrimers. These
Photoinduced Conversion of Silver Nanospheres to Nanoprisms
This light-driven process results in a colloid with distinctive optical properties that directly relate to the nanoprism shape of the particles, which could be useful in developing multicolor diagnostic labels on the basis of nanoparticle composition and size but also of shape.
Role of Poly(amidoamine) Dendrimers for Preparing Nanoparticles of Gold, Platinum, and Silver
Nanoparticles of gold, platinum, and silver were prepared by reduction of their metal salts with NaBH4 in the presence of poly(amidoamine) dendrimers. The dendrimers used were generation 3, 4, and 5
Patterning of hyperbranched polymer films.
  • R. Crooks
  • Materials Science
    Chemphyschem : a European journal of chemical physics and physical chemistry
  • 2001
Another family of patternable HPFs consisting of dendrimers and an active anhydride copolymer is described, and new methods for patterning functional hyperbranched poly(acrylic acid) thin polymer films are described.