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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Low-Temperature Solution-Phase Synthesis of NiAu Alloy Nanoparticles via Butyllithium Reduction: Influences of Synthesis Details and Application As the Precursor to Active Au-NiO/SiO2 Catalysts through Proper Pretreatment
TL;DR: In this paper, isolable NiAu alloy nanoparticles with tunable and relatively uniform sizes were synthesized via a coreduction method employing butyllithium as the reducing agent and trioctylphosphine as the protecting agent.
Journal ArticleDOI
Large scale synthesis of Janus submicron sized colloids by wet etching anisotropic ones.
TL;DR: A facile approach to fabricate Janus submicron sized colloids by the selective etching of anisotropic colloids is presented, which can be scaled up, which is the key to further exploit practical applications.
Journal ArticleDOI
Designed Synthesis of Au/Fe3O4@C Janus Nanoparticles for Dual‐Modal Imaging and Actively Targeted Chemo‐Photothermal Synergistic Therapy of Cancer Cells
Qi Zhang,Lingyu Zhang,Shengnan Li,Xiangjun Chen,Manjie Zhang,Tingting Wang,Lu Li,Chungang Wang +7 more
TL;DR: A novel and facile approach to synthesize Au/Fe3 O4 @C JNPs are reported, which were further selectively functionalized with amino-poly(ethylene glycol)thiol (NH2 -PEG-SH) and folic acid (FA) on the exposed Au domains to achieve high contrast for X-ray computed tomography (CT) imaging, excellent stability, good biocompatibility, as well as cancer cell-specific targeting.
Journal ArticleDOI
Pressure-Enabled Synthesis of Hetero-Dimers and Hetero-Rods through Intraparticle Coalescence and Interparticle Fusion of Quantum-Dot-Au Satellite Nanocrystals
Hua Zhu,Yasutaka Nagaoka,Katie Hills-Kimball,Rui Tan,Long Yu,Yin Fang,Kelly Wang,Ruipeng Li,Zhongwu Wang,Ou Chen +9 more
TL;DR: In situ small/wide-angle X-ray scattering and electron microscopic measurements showed that the HNC-SLs underwent structural transformation at both atomic- and mesoscales during the pressure processing.
Journal ArticleDOI
Thermoresponsive Amphiphilic Janus Silica Nanoparticles via Combining “Polymer Single-Crystal Templating” and “Grafting-from” Methods
TL;DR: A facile method of synthesizing amphiphilic Janus silica nanoparticles (SiNPs) with bicompartment polymer brushes is presented in this article by combining polymer single-crystal templating (PSCryT) and "grafting from" techniques.
References
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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.