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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Atomic Force Microscopy Imaging Study of Aligning DNA by Dumbbell-like Au-Fe3O4 Magnetic Nanoparticles.
TL;DR: An efficient method based on the magnetic field to align long-chain DNA on a silicon surface is developed, showing that DNA can be stretched and highly aligned by the manipulation of magnetic nanoparticles tethered to one end of DNA and that the alignedDNA can be imaged clearly by AFM.
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Anisotropically Phase-segregated Co9S8/PdSxNanoacorns: Stability Improvement and New Heterostructures
TL;DR: In this article, the stability of anisotropic phase-segregated Co9S8/PdSx nanoacorns was improved by the addition of oleic acid or oleylamine as a stabilizer.
Journal ArticleDOI
Synthesis of octahedral gold tip-blobbed nanoparticles and their dielectric sensing properties.
TL;DR: This work demonstrates an easy and robust method to precisely deposit Au nanoparticles at the vertices of Au nano-octahedrons via wet-chemical seed-mediated growth and is promising in the synthesis of advanced Au nanostructures with hybrid optical properties for versatile applications.
Journal ArticleDOI
Synthesis and characterization of poly(ɛ-caprolactone)/Fe3o4 nanocomposites by in situ polymerization
Guangshuo Wang,Ling Wang,Zhiyong Wei,Lin Sang,Xufeng Dong,Min Qi,Guangyi Chen,Ying Chang,Wanxi Zhang +8 more
TL;DR: In this article, a series of magnetic nanocomposites based on poly(ɛ-caprolactone) (PCL) and Fe3O4 nanoparticles were prepared using a facile in situ polymerization method.
Journal ArticleDOI
Synthesis, Characterization, and Physicochemical Properties of Well-Coupled Y2O3 Nanobelt-Ag Nanocrystals Nanocomposites
TL;DR: In this paper, a thermal decomposition of solid metal nitrate salts in dodecylamine and 1-octadecene mixed solvents from room temperature to 320 °C was used to synthesize gram-scale nanocomposites.
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.