Journal ArticleDOI
Dumbbell-like Bifunctional Au−Fe3O4 Nanoparticles
TLDR
The dumbbell is formed through epitaxial growth of iron oxide on the Au seeds, and the growth can be affected by the polarity of the solvent, as the use of diphenyl ether results in flower-like Au-Fe(3)O(4) nanoparticles.Abstract:
Dumbbell-like Au−Fe3O4 nanoparticles are synthesized using decomposition of Fe(CO)5 on the surface of the Au nanoparticles followed by oxidation in 1-octadecene solvent. The size of the particles is tuned from 2 to 8 nm for Au and 4 nm to 20 nm for Fe3O4. The particles show the characteristic surface plasmon absorption of Au and the magnetic properties of Fe3O4 that are affected by the interactions between Au and Fe3O4. The dumbbell is formed through epitaxial growth of iron oxide on the Au seeds, and the growth can be affected by the polarity of the solvent, as the use of diphenyl ether results in flower-like Au−Fe3O4 nanoparticles.read more
Citations
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Janus hybrid hairy nanoparticles
TL;DR: A review of the recent progress in the field of self-and directed assembly of Janus hairy nanoparticles can be found in this paper, where the authors focus on the newly developed polymer single crystal directed nanoparticle assembly approach.
Journal ArticleDOI
Adsorption of gold subnano-structures on a magnetite(111) surface and their interaction with CO.
TL;DR: The adsorption of gold subnano-structures on the Fe-rich termination of the magnetite(111) surface has been investigated using density functional theory and CO bonding to larger, oxide supported Aun structures is distinctly stronger than that to the bare oxide surface.
Journal ArticleDOI
Controlled synthesis of FePt-Au hybrid nanoparticles triggered by reaction atmosphere and FePt seeds
TL;DR: An effective and facile method for synthesis of FePt-Au hybrid nanoparticles (HNPs) and the optical properties of the resulting products can be steadily tuned which sheds light on their potential application in optical devices and bioimaging.
Journal ArticleDOI
A General Route to Optically Transparent Highly Filled Polymer Nanocomposites
TL;DR: In this article, a general route to nonaggregated highly filled, optically transparent polymer nanocomposites is described, which is based on using nanoparticles that have been coated with polymers forming spherical brushlike layers providing thermodynamic miscibility with the polymer matrix over the complete range of nanoparticle volume fractions.
Journal ArticleDOI
Synthesis and properties of Au-Fe3O4 heterostructured nanoparticles.
Yang Sheng,Junmin Xue +1 more
TL;DR: Au-Fe(3)O(4) composite nanoparticles synthesized via thermal decomposition route with well-defined dimer-like nanostructure were demonstrated to have dual-functionalities of plasmon resonance and magnetization and can be tuned readily by adjusting the molar ratio between Fe and Au sources.
References
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Journal ArticleDOI
Gold nanoparticles: assembly, supramolecular chemistry, quantum-size-related properties, and applications toward biology, catalysis, and nanotechnology.
TL;DR: A review of gold nanoparticles can be found in this article, where the most stable metal nanoparticles, called gold colloids (AuNPs), have been used for catalysis and biology applications.
Journal ArticleDOI
Monodisperse MFe2O4 (M = Fe, Co, Mn) Nanoparticles
Shouheng Sun,Hao Zeng,David B. Robinson,Simone Raoux,Philip M. Rice,Shan X. Wang,Guanxiong Li +6 more
TL;DR: As-synthesized iron oxide nanoparticles have a cubic spinel structure as characterized by HRTEM, SAED, and XRD and can be transformed into hydrophilic ones by adding bipolar surfactants, and aqueous nanoparticle dispersion is readily made.
Journal ArticleDOI
Nanoparticles with Raman Spectroscopic Fingerprints for DNA and RNA Detection
TL;DR: Six dissimilar DNA targets with six Raman-labeled nanoparticle probes were distinguished, as well as two RNA targets with single nucleotide polymorphisms, and the current unoptimized detection limit of this method is 20 femtomolar.
Journal ArticleDOI
Novel Gold Catalysts for the Oxidation of Carbon Monoxide at a Temperature far Below 0 °C
TL;DR: In this article, a variety of gold catalysts are used to catalyze the oxidation of carbon monoxide at temperatures as low as −70 °C and are stable in a moistened gas atmosphere.
Journal ArticleDOI
Epitaxial Growth of Highly Luminescent CdSe/CdS Core/Shell Nanocrystals with Photostability and Electronic Accessibility
TL;DR: The synthesis of epitaxially grown, wurtzite CdSe/CdS core/shell nanocrystals is reported in this paper, where shells of up to three monolayers in thickness were grown on cores ranging in diameter from 23 to 39.