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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Journal ArticleDOI
A facile synthesis of asymmetric hybrid colloidal particles.
TL;DR: A simple approach to the synthesis of asymmetric, hybrid colloidal particles by precipitation polymerization, where the key is to introduce Au or Ag colloids 2 min after (rather than before) starting the polymerization.
Journal ArticleDOI
Molecular Mimetic Self‐Assembly of Colloidal Particles
TL;DR: In this paper, an overview of the current progress in molecular mimetic self-assembly of colloidal particles is presented, with a rather conservative conclusion of the status quo of this new research field with a very optimistic outlook.
Journal ArticleDOI
Janus plasmonic–magnetic gold–iron oxide nanoparticles as contrast agents for multimodal imaging
Javier Reguera,Dorleta Jimenez de Aberasturi,Malou Henriksen-Lacey,Judith Langer,Ana Espinosa,Boguslaw Szczupak,Claire Wilhelm,Luis M. Liz-Marzán +7 more
TL;DR: Novel gold-iron oxide Janus magnetic-plasmonic nanoparticles are described as versatile nanoprobes for multimodal imaging and the results obtained show the high versatility of these nanoparticles, the advantages of a Janus configuration, and their high potential in multipurpose biomedical applications.
Journal ArticleDOI
A general route to construct diverse multifunctional Fe3O4/metal hybrid nanostructures.
TL;DR: High-density Au nanoparticles (NPs) could be supported on the surface of superparamagnetic Fe(3)O(4) spheres and used as seeds to construct Au shell-coated magnetic spheres displaying near-infrared (NIR) absorption, which may make them promising in biosensor and biomedicine applications.
Journal ArticleDOI
Anisotropic nanomaterials for shape-dependent physicochemical and biomedical applications
TL;DR: This review contributes towards a systematic understanding of the mechanism of shape-dependent effects on nanoparticles (NPs) for elaborating and predicting their properties and applications based on the past two decades of research.
References
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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.