Structural Implications on the Electrochemical and Spectroscopic Signature of CdSe-ZnS Core−Shell Quantum Dots

Structural Implications on the Electrochemical and Spectroscopic Signature of CdSe-ZnS Core−Shell Quantum Dots: "The Journal of Physical Chemistry C, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

Monodisperse Octahedral α-MnS and MnO Nanoparticles by the Decomposition of Manganese Oleate in the Presence of Sulfur

Monodisperse Octahedral α-MnS and MnO Nanoparticles by the Decomposition of Manganese Oleate in the Presence of Sulfur: "Chemistry of Materials, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

Nanosized Tetragonal BaTiO3 Powders Synthesized by a New Peroxo-Precursor Decomposition Method

Nanosized Tetragonal BaTiO3 Powders Synthesized by a New Peroxo-Precursor Decomposition Method: "Chemistry of Materials, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

Sr2.975−xBaxCe0.025AlO4F: a Highly Efficient Green-Emitting Oxyfluoride Phosphor for Solid State White Lighting

Sr2.975−xBaxCe0.025AlO4F: a Highly Efficient Green-Emitting Oxyfluoride Phosphor for Solid State White Lighting: "Chemistry of Materials, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

Depletion-Induced Shape and Size Selection of Gold Nanoparticles

Depletion-Induced Shape and Size Selection of Gold Nanoparticles: "Nano Letters, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

Electrochemical Synthesis of Morphology-Controlled Segmented CdSe Nanowires

Electrochemical Synthesis of Morphology-Controlled Segmented CdSe Nanowires: "ACS Nano, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

Organic Infrared Upconversion Device

Organic Infrared Upconversion Device: "

Novel infrared-to-visible light upconversion devices are demonstrated by fabricating an organic light-emitting diode with an infrared-sensitizing layer. With a SnPc:C₆₀ mixed layer as an infrared absorber and fac-tris(2-phenylpyridinato) iridium (III) (Irppy₃) as an emitter, an infrared-to-green up-conversion device is demonstrated under 830-nm irradiation (see figure, ITO=indium tin oxide). The maximum photon-to-photon conversion efficiency is 2.7% at 15V.
[Communication]
Do Young Kim, Dong Woo Song, Neetu Chopra, Pieter De Somer, Franky So
Adv. Mater., March 29, 2010, DOI: 10.1002/adma.200903312. Read article.
"

Composition Variation and Thermal Treatment of ZnxCd1−xS Alloy Nanoparticles to Exhibit Controlled and Efficient Luminescence

Composition Variation and Thermal Treatment of ZnxCd1−xS Alloy Nanoparticles to Exhibit Controlled and Efficient Luminescence: "The Journal of Physical Chemistry C, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

A review of the antibacterial effects of silver nanomaterials and potential implications for human health and the environment

A review of the antibacterial effects of silver nanomaterials and potential implications for human health and the environment: "

Abstract

Here, we present a review of the antibacterial effects of silver nanomaterials, including proposed antibacterial mechanisms
and possible toxicity to higher organisms. For purpose of this review, silver nanomaterials include silver nanoparticles,
stabilized silver salts, silver–dendrimer, polymer and metal oxide composites, and silver-impregnated zeolite and activated
carbon materials. While there is some evidence that silver nanoparticles can directly damage bacteria cell membranes, silver
nanomaterials appear to exert bacteriocidal activity predominantly through release of silver ions followed (individually or
in combination) by increased membrane permeability, loss of the proton motive force, inducing de-energization of the cells
and efflux of phosphate, leakage of cellular content, and disruption DNA replication. Eukaryotic cells could be similarly
impacted by most of these mechanisms and, indeed, a small but growing body of literature supports this concern. Most antimicrobial
studies are performed in simple aquatic media or cell culture media without proper characterization of silver nanomaterial
stability (aggregation, dissolution, and re-precipitation). Silver nanoparticle stability is governed by particle size, shape,
and capping agents as well as solution pH, ionic strength, specific ions and ligands, and organic macromolecules—all of which
influence silver nanoparticle stability and bioavailability. Although none of the studies reviewed definitively proved any
immediate impacts to human health or the environment by a silver nanomaterial containing product, the entirety of the science
reviewed suggests some caution and further research are warranted given the already widespread and rapidly growing use of
silver nanomaterials.

• Content Type Journal Article
• Category Review Paper
• DOI 10.1007/s11051-010-9900-y
• Authors
  
  • Catalina Marambio-Jones, University of California, Los Angeles Department of Civil and Environmental Engineering, California NanoSystems Institute 5732G Boelter Hall PO Box 951593 Los Angeles CA 90095-1593 USA
  • Eric M. V. Hoek, University of California, Los Angeles Department of Civil and Environmental Engineering, California NanoSystems Institute 5732G Boelter Hall PO Box 951593 Los Angeles CA 90095-1593 USA

• Journal Journal of Nanoparticle Research
• Online ISSN 1572-896X
• Print ISSN 1388-0764

Hexagonally Patterned Silver Nanoparticles Electrodeposited on an Aluminum Plate for Surface-Enhanced Raman Scattering†

Hexagonally Patterned Silver Nanoparticles Electrodeposited on an Aluminum Plate for Surface-Enhanced Raman Scattering†: "The Journal of Physical Chemistry C, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

Nanoparticle Clusters Light Up in SERS

Nanoparticle Clusters Light Up in SERS: "


Seeing double: Nanoparticle clusters (dimers, trimers, etc.) have long been pursued as enhancers in surface-enhanced Raman spectroscopy research. A recent report presents an elegant approach for high-yielding fabrication of dimers of silver nanospheres from nanocubes by controlled chemical etching. These nanoparticle dimers are capable of strongly enhancing Raman signals of surface adsorbates (see picture).
[Highlight]
Rongchao Jin
Angew. Chem. Int. Ed., DOI: 10.1002/anie.200906462. Read article.
"

VUV Excitation of YBO3 and (Y,Gd)BO3 Phosphors Doped with Eu3+ or Tb3+: Comparison of Efficiencies and Effect of Site-Selectivity

VUV Excitation of YBO3 and (Y,Gd)BO3 Phosphors Doped with Eu3+ or Tb3+: Comparison of Efficiencies and Effect of Site-Selectivity: "The Journal of Physical Chemistry C, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

Synthesis and Characterization of Colloidal-Supported Metal Nanoparticles as Potential Intermediate Nanocatalysts

Synthesis and Characterization of Colloidal-Supported Metal Nanoparticles as Potential Intermediate Nanocatalysts: "The Journal of Physical Chemistry C, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

A Facile Method To Obtain Highly Stable Silver Nanoplate Colloids with Desired Surface Plasmon Resonance Wavelengths

A Facile Method To Obtain Highly Stable Silver Nanoplate Colloids with Desired Surface Plasmon Resonance Wavelengths: "The Journal of Physical Chemistry C, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

Influence of Co2+ Ion Concentration on the Size, Magnetic Properties, and Purity of CoFe2O4 Spinel Ferrite Nanoparticles

Influence of Co2+ Ion Concentration on the Size, Magnetic Properties, and Purity of CoFe2O4 Spinel Ferrite Nanoparticles: "The Journal of Physical Chemistry C, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

Vacuum Ultraviolet−Visible Spectroscopic Properties of Tb3+ in Li(Y, Gd)(PO3)4: Tunable Emission, Quantum Cutting, and Energy Transfer

Vacuum Ultraviolet−Visible Spectroscopic Properties of Tb3+ in Li(Y, Gd)(PO3)4: Tunable Emission, Quantum Cutting, and Energy Transfer: "The Journal of Physical Chemistry C, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

(Multi)exciton Dynamics and Exciton Polarizability in Colloidal InAs Quantum Dots

(Multi)exciton Dynamics and Exciton Polarizability in Colloidal InAs Quantum Dots: "The Journal of Physical Chemistry C, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

Surface-enhanced Raman Spectroscopy of Arsenate and Arsenite Using Ag Nanofilm Prepared by Modified Mirror Reaction

Surface-enhanced Raman Spectroscopy of Arsenate and Arsenite Using Ag Nanofilm Prepared by Modified Mirror Reaction: "Publication year: 2010
Source: Journal of Colloid and Interface Science, In Press, Accepted Manuscript, Available online 16 March 2010
Zhonghou, Xu , Jumin, Hao , Fasheng, Li , Xiaoguang, Meng
A modified mirror reaction was developed to prepare a sensitive and reproducible Ag nanofilm substrate for the surface-enhanced Raman scattering (SERS) analysis of arsenate (As(V)) and arsenite (As(III)). A good linear relationship between the SERS intensity of As(V) and As(III) and their concentrations in the range from 10 to 500 μg-As/L was achieved using the SERS substrate. As(V) and As(III) appear to be adsorbed on the Ag nanofilm through formation of surface complexes with Ag, based on comparisons of the Raman spectra of the arsenic species in solutions, on the SERS substrate, and in silver arsenate and arsenite solids. As(V)...

Graphical abstract

Mirror reaction was modified to prepare a sensitive silver nanofilm which can detect ppb level As(V) and As(III).
"

Gold-Based Hybrid Nanocrystals Through Heterogeneous Nucleation and Growth

Gold-Based Hybrid Nanocrystals Through Heterogeneous Nucleation and Growth: "A facile method for the synthesis of Au-based hybrid nanocrystals is described by employing pre-synthesized nanocrystals as seeds for heterogeneous nucleation and growth of Au. The seeds are CdSe, PbSe, FePt, Cu2O, or FePt-CdS nanocrystals. The sites of heterogeneous nucleation can be accurately controlled for nanocrystal seeds with a nonspherical shape."

Detailed Analysis of the Growth Kinetics of ZnO Nanorods in Methanol

Detailed Analysis of the Growth Kinetics of ZnO Nanorods in Methanol: "The Journal of Physical Chemistry C, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

Synthesis and Photocatalytic Activities of NaNbO3 Rods Modified by In2O3 Nanoparticles

Synthesis and Photocatalytic Activities of NaNbO3 Rods Modified by In2O3 Nanoparticles: "The Journal of Physical Chemistry C, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

Enhanced Single-Molecule Detection using Porous Silver Membrane†

Enhanced Single-Molecule Detection using Porous Silver Membrane†: "The Journal of Physical Chemistry C, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

Rapid Solid-State Synthesis of Nanostructured Silicon

Rapid Solid-State Synthesis of Nanostructured Silicon: "Chemistry of Materials, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

Plasmonic Modulation of the Upconversion Fluorescence in NaYF4:Yb/Tm Hexaplate Nanocrystals Using Gold Nanoparticles or Nanoshells

Plasmonic Modulation of the Upconversion Fluorescence in NaYF4:Yb/Tm Hexaplate Nanocrystals Using Gold Nanoparticles or Nanoshells: "Automatic upgrade: Attachment of gold nanoparticles (NPs) onto upconversion nanocrystals (NCs) results in plasmonic interactions that lead to a significant enhancement of upconversion emission of more than 2.5. Conversely, formation of a gold shell greatly suppresses the NC emission because of considerable scattering of excitation irradiation (see picture; a=NC before seed attachment; b, c=NC with attached Au NPs; c=NC Au shell; scale bar=50 nm)."

A Seed-Based Diffusion Route to Monodisperse Intermetallic CuAu Nanocrystals

A Seed-Based Diffusion Route to Monodisperse Intermetallic CuAu Nanocrystals: "


A seedy route: Monodisperse CuAu and Cu₃Au nanocrystals (NCs) were fabricated by a seed-based diffusion route using Au NCs as precursors. This method has advantages in controlling the size and monodispersity of the products. Moving a solid-state reaction into solution may help to achieve homogeneous diffusion and require less time and thermal energy.
[Communication]
Wei Chen, Rong Yu, Lingling Li, Annan Wang, Qing Peng, Yadong Li
Angew. Chem. Int. Ed., March 15, 2010, DOI: 10.1002/anie.200906835. Read article.
"

Adsorption and Aggregation Characteristics of Silver Nanoparticles onto a Poly(4-vinylpyridine) Film: A Comparison with Gold Nanoparticles

Adsorption and Aggregation Characteristics of Silver Nanoparticles onto a Poly(4-vinylpyridine) Film: A Comparison with Gold Nanoparticles: "Langmuir, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

Monitoring a Coordinated Exchange Process in a Four-Component Biological Interaction System: Development of a Time-Resolved Terbium-Based One-Donor/Three-Acceptor Multicolor FRET System

Monitoring a Coordinated Exchange Process in a Four-Component Biological Interaction System: Development of a Time-Resolved Terbium-Based One-Donor/Three-Acceptor Multicolor FRET System: "Journal of the American Chemical Society, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

Ligand-Functionalised Copper(II) Hydroxide for Quantum Dot Photoluminescence Quenching

Ligand-Functionalised Copper(II) Hydroxide for Quantum Dot Photoluminescence Quenching: "Publication year: 2010
Source: Journal of Colloid and Interface Science, In Press, Accepted Manuscript, Available online 12 March 2010
Benjamin J., Wylie-van Eerd , Aidan G., Young , Najeh I., Al-Salim , Tim, Kemmitt , Nick M., Strickland
The preparation of ligand-functionalised copper(II) hydroxide (Cu(OH)2) particles and their conjugation with hydrophobic CdSeS quantum dots (QDs) is reported. The photoluminescence of the QDs is efficiently quenched upon their conjugation with the functionalised Cu(OH)2 particles. Cu(OH)2 was functionalised with 2,2’-dipyridyl (2,2-bipy) and n-octanoic acid (OcA), by adsorption of the desired ligand to Cu(OH)2 suspended in solvent. The resulting functionalised Cu(OH)2 substrates were characterised using infrared, UV-visible diffuse reflectance, and X-ray photoelectron spectroscopic techniques, TEM imaging, and micro- and thermogravimetric analysis. The spectral data indicated that both 2,2-bipy and OcA coordinated to Cu(OH)2 in a bidentate manner. The functionalised Cu(OH)2 substrates...

Graphical abstract

The preparation of Cu(OH)2 functionalised with 2,2-bipy or n-octanoic acid, and the subsequent conjugation with hydrophobic CdSeS quantum dots is reported.
"

Facile synthesis, growth mechanism, and optical properties of CdSe nanoparticles in self-assembled micellar media and their efficient conjugation with proteins

Facile synthesis, growth mechanism, and optical properties of CdSe nanoparticles in self-assembled micellar media and their efficient conjugation with proteins: "

Abstract

This article demonstrates the influence of various surfactants of different polarities—anionic, sodium dodecyl sulfate, cationic,
hexadecyltrimethylammonium bromide and non-ionic, and polyoxyethylene iso-octyl phenyl ether (TX-100)—on the formation of
CdSe nanoparticles in aqueous solutions. The surfactant-stabilizing effect has been monitored using transmission electron
microscopy. Spectral properties of CdSe nanoparticles have been investigated; the structure of the long-wave edge of the fundamental
absorption band of CdSe nanoparticles has been analyzed. It has been shown that the variation of the synthesizing conditions
(stabilizer’s nature and concentration, CdSe concentration, etc.) allows the tailoring of the CdSe nanoparticle size in the
range of 8–17 nm. Lifshitz–Slyrzov–Wagner kinetic analysis has also been performed using the size variation according to ripening
temperature and time period. The differences in the stabilization ability of tested substances are discussed with respect
to their structure and possible mechanism of the surface interaction with the nanoparticles. The flexible surface chemistry
of the CdSe-micelles causes them to be water soluble and allows their further conjugation with protein molecules through electrostatic
attraction. The interaction between functionalized CdSe nanoparticles with protein molecules have been investigated using
fluorescence spectroscopy.

• Content Type Journal Article
• Category Research Paper
• DOI 10.1007/s11051-010-9890-9
• Authors
  
  
  • S. K. Mehta, Panjab University Department of Chemistry and Centre of Advanced Studies in Chemistry Chandigarh 160 014 India
  • Savita Chaudhary, Panjab University Department of Chemistry and Centre of Advanced Studies in Chemistry Chandigarh 160 014 India
  • Sanjay Kumar, Panjab University Department of Chemistry and Centre of Advanced Studies in Chemistry Chandigarh 160 014 India
  • Sukhjinder Singh, Panjab University Department of Chemistry and Centre of Advanced Studies in Chemistry Chandigarh 160 014 India
  
  

• Journal Journal of Nanoparticle Research
• Online ISSN 1572-896X
• Print ISSN 1388-0764

"

Photoluminescence and thermal stability of yellow-emitting Sr-α-SiAlON:Eu2+ phosphor

Photoluminescence and thermal stability of yellow-emitting Sr-α-SiAlON:Eu2+ phosphor: "

Abstract

Novel α-SiAlON:Eu²⁺-based yellow oxynitride phosphors with the formula Sr_0.375−x
Eu
_x
²⁺Si_12−m−n
Al
_m+n
O
_n
N_16−n
(m = 0.75, n = x = 0.004–0.04) have been prepared by firing the powder mixture of SrSi₂, α-Si₃N₄, AlN, and Eu₂O₃ at 2,000 °C for 2 h under 1 MPa nitrogen atmosphere. The luminescence properties, the dependence of the activator concentration
of Eu²⁺ and the thermal stability of Sr-α-SiAlON:Eu²⁺ phosphor have been investigated in comparison with Ca-α-SiAlON:Eu²⁺ phosphor. Similar to Ca-α-SiAlON:Eu²⁺ phosphor, Sr-α-SiAlON:Eu²⁺ phosphor has the excitation wavelength ranging from the ultraviolet region to 500 nm, and exhibit intense yellow light. The
strongest luminescence was achieved at about x = 0.02 with the emission peak at 578 nm, slightly shorter than that of Ca-α-SiAlON:Eu²⁺ phosphor at 581 nm. Temperature-dependent emission intensity of Sr-α-SiAlON:Eu²⁺ phosphor is comparable to that of Ca-α-SiAlON:Eu²⁺ phosphor. The results suggest that the different position of the emission peak for Sr- and Ca-α-SiAlON:Eu²⁺ depends on the composition and the Stokes shift, and the thermal stability is nearly independent of Sr and Ca or fixed by
the network of (Si, Al)–(O, N) in α-SiAlON at the same Eu²⁺ concentration.

• Content Type Journal Article
• DOI 10.1007/s10853-010-4327-5
• Authors
  
  
  • Kousuke Shioi, SHOWA DENKO K.K. Midori Chiba 267-0056 Japan
  • Naoto Hirosaki, National Institute for Materials Science Tsukuba Ibaraki 305-0044 Japan
  • Rong-Jun Xie, National Institute for Materials Science Tsukuba Ibaraki 305-0044 Japan
  • Takashi Takeda, National Institute for Materials Science Tsukuba Ibaraki 305-0044 Japan
  • Yuan Qiang Li, National Institute for Materials Science Tsukuba Ibaraki 305-0044 Japan
  
  

• Journal Journal of Materials Science
• Online ISSN 1573-4803
• Print ISSN 0022-2461

"

Shape-Dependent Reducibility of Cuprous Oxide Nanocrystals

Shape-Dependent Reducibility of Cuprous Oxide Nanocrystals: "The Journal of Physical Chemistry C, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

Strong quantum confinement effect in nanocrystalline CdS

Strong quantum confinement effect in nanocrystalline CdS: "

Abstract

CdS quantum dots have been prepared by chemical method. The X-ray diffraction results indicated the formation of CdS nanoparticles
with hexagonal phase and grain size 2.5 nm. The HRTEM analysis reveals the formation of CdS quantum dots with an average grain
size of ~2.5 nm. The X-ray photoelectron spectroscopy spectra exhibit the 3d
_5/2 and 3d
_3/2 peaks corresponding to cadmium and the S2p
_3/2 peak corresponding to sulphur. Optical studies by UV–vis spectroscopy show a blue shifted absorption at 471 nm because of
the quantum confined excitonic absorption. The photoluminescence spectra of CdS exhibited a broad green emission band centred
at around 494 nm.

• Content Type Journal Article
• DOI 10.1007/s10853-010-4333-7
• Authors
  
  
  • M. Thambidurai, Coimbatore Institute of Technology Department of Physics Coimbatore India
  • N. Muthukumarasamy, Coimbatore Institute of Technology Department of Physics Coimbatore India
  • S. Agilan, Coimbatore Institute of Technology Department of Physics Coimbatore India
  • N. Murugan, Coimbatore Institute of Technology Department of Mechanical Engineering Coimbatore India
  • S. Vasantha, Coimbatore Institute of Technology Department of Physics Coimbatore India
  • R. Balasundaraprabhu, PSG College of Technology Department of Physics Coimbatore India
  • T. S. Senthil, Erode Sengunthar Engineering College Department of Physics Erode India
  
  

• Journal Journal of Materials Science
• Online ISSN 1573-4803
• Print ISSN 0022-2461

"

Growth Kinetics of Aqueous CdTe Nanocrystals in the Presence of Simple Amines

Growth Kinetics of Aqueous CdTe Nanocrystals in the Presence of Simple Amines: "The Journal of Physical Chemistry C, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

Single-Pot Biofabrication of Zinc Sulfide Immuno-Quantum Dots

Single-Pot Biofabrication of Zinc Sulfide Immuno-Quantum Dots: "Journal of the American Chemical Society, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

Surface-Enhanced Raman and Resonant Rayleigh Scatterings From Adsorbate Saturated Nanoparticles†

Surface-Enhanced Raman and Resonant Rayleigh Scatterings From Adsorbate Saturated Nanoparticles†: "The Journal of Physical Chemistry C, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

SERS-Active Silver Nanoparticles Prepared by a Simple and Green Method

SERS-Active Silver Nanoparticles Prepared by a Simple and Green Method: "The Journal of Physical Chemistry C, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

Lanthanopolyoxotungstates in silica nanoparticles: multi-wavelength photoluminescent core/shell materials

Lanthanopolyoxotungstates in silica nanoparticles: multi-wavelength photoluminescent core/shell materials: "

Carlos M. Granadeiro, Rute A. S. Ferreira, Paula C. R. Soares-Santos, Luis D. Carlos, Tito Trindade, Helena I. S. Nogueira

(Paper from J. Mater. Chem.)

Carlos M. Granadeiro, J. Mater. Chem., 2010, DOI: 10.1039/b919691a

To cite this article before page numbers are assigned, use the DOI form of citation above.


The content of this RSS Feed (c) The Royal Society of Chemistry"

Cyclic electroplating and stripping of silver on Au@SiO2 core/shell nanoparticles for sensitive and recyclable substrate of surface-enhanced Raman scattering

Cyclic electroplating and stripping of silver on Au@SiO2 core/shell nanoparticles for sensitive and recyclable substrate of surface-enhanced Raman scattering: "

Dan Li, Da-Wei Li, Yang Li, John S. Fossey, Yi-Tao Long

(Paper from J. Mater. Chem.)

Dan Li, J. Mater. Chem., 2010, DOI: 10.1039/b924865j

To cite this article before page numbers are assigned, use the DOI form of citation above.


The content of this RSS Feed (c) The Royal Society of Chemistry"

Enhanced Photoluminescence Features of Rare Earth Phenylphosphonate Hybrid Nanostructures Synthesized under Nonaqueous Conditions

Enhanced Photoluminescence Features of Rare Earth Phenylphosphonate Hybrid Nanostructures Synthesized under Nonaqueous Conditions: "The Journal of Physical Chemistry C, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

Crystal Phase Quantum Dots

Crystal Phase Quantum Dots: "Nano Letters, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

Synthesis, Characterization, Defect Chemistry, and FET Properties of Microwave-Derived Nanoscaled Zinc Oxide

Synthesis, Characterization, Defect Chemistry, and FET Properties of Microwave-Derived Nanoscaled Zinc Oxide: "Chemistry of Materials, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

Synthesis of Magnetic, Up-Conversion Luminescent, and Mesoporous Core–Shell-Structured Nanocomposites as Drug Carriers

Synthesis of Magnetic, Up-Conversion Luminescent, and Mesoporous Core–Shell-Structured Nanocomposites as Drug Carriers: "

A multifunctional material (mesoporous, magnetic, and up-conversion luminescent) is prepared through a novel two-step sol–gel process. The materials show ordered mesopores, high magnetization values, and up-conversion luminescence. This product is used as a drug delivery system, which can be monitored or tracked based on their magnetic and up-conversion luminescent features.

[Full Paper]
Shili Gai, Piaoping Yang, Chunxia Li, Wenxin Wang, Yunlu Dai, Na Niu, Jun Lin
Adv. Funct. Mater., March 4, 2010, DOI: 10.1002/adfm.200902274. Read article.

"

Synthesis of Monodisperse Mesoporous Titania Beads with Controllable Diameter, High Surface Areas, and Variable Pore Diameters (14−23 nm)

Synthesis of Monodisperse Mesoporous Titania Beads with Controllable Diameter, High Surface Areas, and Variable Pore Diameters (14−23 nm): "Journal of the American Chemical Society, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

Solution-Phase Synthesis of SnSe Nanocrystals for Use in Solar Cells

Solution-Phase Synthesis of SnSe Nanocrystals for Use in Solar Cells: "Journal of the American Chemical Society, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

Electron Transfer and Fluorescence Quenching of Nanoparticle Assemblies

Electron Transfer and Fluorescence Quenching of Nanoparticle Assemblies: "The Journal of Physical Chemistry C, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

Exciton Dynamics in CdS−Ag2S Nanorods with Tunable Composition Probed by Ultrafast Transient Absorption Spectroscopy

Exciton Dynamics in CdS−Ag2S Nanorods with Tunable Composition Probed by Ultrafast Transient Absorption Spectroscopy: "The Journal of Physical Chemistry C, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

Synthesis of Magnetic, Up-Conversion Luminescent, and Mesoporous Core-Shell-Structured Nanocomposites as Drug Carriers

Synthesis of Magnetic, Up-Conversion Luminescent, and Mesoporous Core-Shell-Structured Nanocomposites as Drug Carriers: "The synthesis (by a facile two-step sol-gel process), characterization, and application in controlled drug release is reported for monodisperse core-shell-structured Fe3O4@nSiO2@mSiO2@NaYF4: Yb3+, Er3+/Tm3+ nanocomposites with mesoporous, up-conversion luminescent, and magnetic properties. The nanocomposites show typical ordered mesoporous characteristics and a monodisperse spherical morphology with narrow size distribution (around 80 nm). In addition, they exhibit high magnetization (38.0 emu g-1, thus it is possible for drug targeting under a foreign magnetic field) and unique up-conversion emission (green for Yb3+/Er3+ and blue for Yb3+/Tm3+) under 980 nm laser excitation even after loading with drug molecules. Drug release tests suggest that the multifunctional nanocomposites have a controlled drug release property. Interestingly, the up-conversion emission intensity of the multifunctional carrier increases with the released amount of model drug, thus allowing the release process to be monitored and tracked by the change of photoluminescence intensity. This composite can act as a multifunctional drug carrier system, which can realize the targeting and monitoring of drugs simultaneously."

Electroless Growth of Silver Nanoparticles into Mesostructured Silica Block Copolymer Films

Electroless Growth of Silver Nanoparticles into Mesostructured Silica Block Copolymer Films: "Langmuir, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

Preparation of Homogeneous Gold−Silver Alloy Nanoparticles Using the Apoferritin Cavity As a Nanoreactor

Preparation of Homogeneous Gold−Silver Alloy Nanoparticles Using the Apoferritin Cavity As a Nanoreactor: "The Journal of Physical Chemistry C, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

Assemblies of thiol-capped nanocrystals as building blocks for use in nanotechnology

Assemblies of thiol-capped nanocrystals as building blocks for use in nanotechnology: "

Nikolai Gaponik

(Feature Article from J. Mater. Chem.)

Nikolai Gaponik, J. Mater. Chem., 2010, DOI: 10.1039/b924512j

To cite this article before page numbers are assigned, use the DOI form of citation above.


The content of this RSS Feed (c) The Royal Society of Chemistry"

Iron/iron oxide nanoparticles: a versatile support for catalytic metals and their application in Suzuki-Miyaura cross-coupling reactions

Iron/iron oxide nanoparticles: a versatile support for catalytic metals and their application in Suzuki-Miyaura cross-coupling reactions: "

Shuai Zhou, Melanie Johnson, Jonathan G. C. Veinot

(Communication from Chem. Commun.)

Shuai Zhou, Chem. Commun., 2010, DOI: 10.1039/b922462a

To cite this article before page numbers are assigned, use the DOI form of citation above.


The content of this RSS Feed (c) The Royal Society of Chemistry"

Quantitative evaluation of electromagnetic enhancement in surface-enhanced resonance Raman scattering from plasmonic properties and morphologies of individual Ag nanostructures

Quantitative evaluation of electromagnetic enhancement in surface-enhanced resonance Raman scattering from plasmonic properties and morphologies of individual Ag nanostructures: "Author(s): Ken-ichi Yoshida, Tamitake Itoh, Hiroharu Tamaru, Vasudevanpillai Biju, Mitsuru Ishikawa, and Yukihiro Ozaki
The electromagnetic (EM) enhancement in surface-enhanced resonance Raman scattering (SERRS) is quantitatively evaluated for rhodamine molecules adsorbed on Ag nanostructures. Polarization dependence of the plasma resonance (plasmon resonance) and the SERRS spectra from single isolated Ag nanostructu...
[Phys. Rev. B 81, 115406] Published Wed Mar 03, 2010"

Hot Paper: Plasmonic Modulation of the Upconversion Fluorescence in NaYF4:Yb/Tm Hexaplate Nanocrystals Using Gold Nanoparticles or Nanoshells

Hot Paper: Plasmonic Modulation of the Upconversion Fluorescence in NaYF4:Yb/Tm Hexaplate Nanocrystals Using Gold Nanoparticles or Nanoshells: "

Hua Zhang, Yujing Li, Ivan A. Ivanov, Yongquan Qu, Yu Huang*, Xiangfeng Duan*

Automatic upgrade: Attachment of gold nanoparticles (NPs) to upconversion nanocrystals (NCs) results in plasmonic interactions that lead to an enhancement factor of over 2.5 in the upconversion emission. Conversely, formation of a gold shell significantly suppresses the NC emission because of considerable scattering of excitation irradiation (see picture; a=NCs before seed attachment; b, c=NCs with increasing numbers of NPs; scale bar=50 nm).

Coming soon.

"

Measuring Ensemble-Averaged Surface-Enhanced Raman Scattering in the Hotspots of Colloidal Nanoparticle Dimers and Trimers

Measuring Ensemble-Averaged Surface-Enhanced Raman Scattering in the Hotspots of Colloidal Nanoparticle Dimers and Trimers: "Journal of the American Chemical Society, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

Metal Conjugated Semiconductor Hybrid Nanoparticle-Based Fluorescence Resonance Energy Transfer

Metal Conjugated Semiconductor Hybrid Nanoparticle-Based Fluorescence Resonance Energy Transfer: "The Journal of Physical Chemistry C, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

Thermal Stability of Silver Nanorod Arrays

Thermal Stability of Silver Nanorod Arrays: "Chemistry of Materials, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."

Room-Temperature Formation of Hollow Cu2O Nanoparticles

Room-Temperature Formation of Hollow Cu₂O Nanoparticles: "

Monodisperse Cu and Cu₂O nanoparticles (NPs) are synthesized using tetradecylphosphonic acid as a capping agent. Dispersing the NPs in chloroform and hexane at room temperature results in the formation of hollow Cu₂O NPs and Cu@Cu₂O core/shell NPs, respectively. The monodisperse Cu₂O NPs are used to fabricate hybrid solar cells with efficiency of 0.14% under AM 1.5 and 1 Sun illumination.

[Communication]
Ling-I Hung, Chia-Kuang Tsung, Wenyu Huang, Peidong Yang
Adv. Mater., February 26, 2010, DOI: 10.1002/adma.200903947. Read article.

"

ZnO Nanoparticles: Synthesis, Characterization, and Ecotoxicological Studies

ZnO Nanoparticles: Synthesis, Characterization, and Ecotoxicological Studies: "Langmuir, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable)."