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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Unconventional Route to Hairy Plasmonic/Semiconductor Core/Shell Nanoparticles with Precisely Controlled Dimensions and Their Use in Solar Energy Conversion
Dajiang Zheng,Dajiang Zheng,Xinchang Pang,Mengye Wang,Mengye Wang,Yanjie He,Changjian Lin,Zhiqun Lin +7 more
TL;DR: In this paper, a star-like triblock copolymer composed of inner hydrophilic P4VP blocks, central hydrophobic PtBA blocks, and outer HP blocks with well-defined molecular architecture and molecular weight of each block was judiciously exploited as nanoreactor for synthesis of precisely shaped hairy plasmonic/semiconductor Au/TiO2 core/shell nanoparticles.
Journal ArticleDOI
Controllable Synthesis of SERS-Active Magnetic Metal–Organic Framework-Based Nanocatalysts and Their Application in Photoinduced Enhanced Catalytic Oxidation
TL;DR: This study provides a versatile approach for the fabrication of functional MOF-based nanocomposites as a promising SERS substrate with a unique photoinduced enhanced peroxidase-like activity for potential applications in ultrasensitive monitoring, biomedical treatment, and environmental evaluation.
Journal ArticleDOI
Rationally designed multifunctional plasmonic nanostructures for surface-enhanced Raman spectroscopy: a review
Wei Xie,Sebastian Schlücker +1 more
TL;DR: In this paper, the synthesis and use of surface-enhanced Raman scattering (SERS) as a molecular spectroscopic technique with high sensitivity, fingerprint specificity, and surface selectivity is discussed.
Journal ArticleDOI
Microfluidic synthesis of Janus particles by UV-directed phase separation.
TL;DR: A synthetic methodology based on microfluidics has been developed to fabricate monodisperse polymer Janus particles by UV-directed phase separation.
Journal ArticleDOI
Janus Magnetic-Plasmonic Nanoparticles for Magnetically Guided and Thermally Activated Cancer Therapy.
Ana Espinosa,Ana Espinosa,Javier Reguera,Javier Reguera,Alberto Curcio,Álvaro Muñoz-Noval,Christian Kuttner,Aurore Van de Walle,Luis M. Liz-Marzán,Claire Wilhelm +9 more
TL;DR: The use of Janus magneto-plasmonic nanoparticles, made of gold nanostars and iron oxide nanospheres, as efficient therapeutic nanoheaters whose on-site delivery can be improved by magnetic targeting, is proposed.
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.