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This page shows you the most recent publications within this specialty of the MedWorm directory. This is page number 14.

Dark Plasmons in Hot Spot Generation and Polarization in Interelectrode Nanoscale Junctions
Nano LettersDOI: 10.1021/nl400363d
Source: Nano Letters - February 11, 2013 Category: Nanotechnology Authors: Joseph B. Herzog, Mark W. Knight, Yajing Li, Kenneth M. Evans, Naomi J. Halas and Douglas Natelson Source Type: research

Interaction Energies of Ionic Liquids with Metallic Nanoparticles: Solvation and Stabilization Effects
The Journal of Physical Chemistry CDOI: 10.1021/jp309064u
Source: The Journal of Physical Chemistry C - February 11, 2013 Category: Chemistry Authors: Ajda Podgoršek, Alfonso S. Pensado, Catherine C. Santini, Margarida F. Costa Gomes and Agílio A. H. Pádua Source Type: research

Switching Transport through Nanopores with pH-Responsive Polymer Brushes for Controlled Ion Permeability
ACS Applied Materials & InterfacesDOI: 10.1021/am302820y
Source: ACS Applied Materials and Interfaces - February 11, 2013 Category: Materials Science Authors: G. Wilhelmina de Groot, M. Gabriella Santonicola, Kaori Sugihara, Tomaso Zambelli, Erik Reimhult, János Vörös and G. Julius Vancso Source Type: research

Characterization of a new TiF4 and β-cyclodextrin inclusion complex and its in vitro evaluation on inhibiting enamel demineralization
Abstract: Titanium tetrafluoride (TiF4) is an effective but instable caries preventive agent. As the stability problems could be minimized through the use of drug carriers this study aimed to prepare and characterize a new TiF4 nanoinclusion complex and to evaluate its potential in inhibiting enamel demineralization under pH cycling conditions. The TiF4 nanosystems were prepared using β-cyclodextrin (βCD) and sodium montmorillonite (MMTNa). Bovine enamel blocks (n=48) with known surface microhardness (SMH), were randomly assigned to 4 groups (n=12) and submitted to one of the following treatments: distilled deionized wat...
Source: Archives of Oral Biology - February 11, 2013 Category: Dentistry Authors: Camila Nassur, Adílis Kalina Alexandria, Luciana Pomarico, Valeria Pereira de Sousa, Lúcio Mendes Cabral, Lucianne Cople Maia Tags: Tooth Biology Source Type: research

Reactivity of Atomic Oxygen Radical Anions Bound to Titania and Zirconia Nanoparticles in the Gas Phase: Low-Temperature Oxidation of Carbon Monoxide
Journal of the American Chemical SocietyDOI: 10.1021/ja311695t
Source: Journal of the American Chemical Society - February 11, 2013 Category: Chemistry Authors: Jia-Bi Ma, Bo Xu, Jing-Heng Meng, Xiao-Nan Wu, Xun-Lei Ding, Xiao-Na Li and Sheng-Gui He Source Type: research

Light Scattering Enhancement in Nanostructured Silver Film Composites
The Journal of Physical Chemistry CDOI: 10.1021/jp3125507
Source: The Journal of Physical Chemistry C - February 11, 2013 Category: Chemistry Authors: Norberto Micali, Fortunato Neri, Paolo M. Ossi and Sebastiano Trusso Source Type: research

Size Control to a Sub-Nanometer Scale in Platinum Catalysts on Graphene
The Journal of Physical Chemistry CDOI: 10.1021/jp311852j
Source: The Journal of Physical Chemistry C - February 11, 2013 Category: Chemistry Authors: Rikson Siburian, Takahiro Kondo and Junji Nakamura Source Type: research

Atomic Ligand Passivation of Colloidal Nanocrystal Films via their Reaction with Propyltrichlorosilane
Chemistry of MaterialsDOI: 10.1021/cm303022w
Source: Chemistry of Materials - February 11, 2013 Category: Materials Science Authors: Marco Zanella, Lorenzo Maserati, Manuel Pernia Leal, Mirko Prato, Romain Lavieville, Mauro Povia, Roman Krahne and Liberato Manna Source Type: research

Correction to “Design and Characterization of Programmable DNA Nanotubes”
Journal of the American Chemical SocietyDOI: 10.1021/ja400841u
Source: Journal of the American Chemical Society - February 11, 2013 Category: Chemistry Authors: Paul W. K. Rothemund, Axel Ekani-Nkodo, Nick Papadakis, Ashish Kumar, Deborah Kuchnir Fygenson and Erik Winfree Source Type: research

Correction to “Ligand Initiated Self-Assembly of Pt and Ir Nanoparticles about Ru(II) Diimines in Room Temperature Fluid Solution”
The Journal of Physical Chemistry CDOI: 10.1021/jp401321h
Source: The Journal of Physical Chemistry C - February 11, 2013 Category: Chemistry Authors: Parbatee Samaroo Jagassar, Anthony Perri, Guillermo Ibarrola and Harry D. Gafney Source Type: research

Maximal Raman Optical Activity in Hybrid Single Molecule-Plasmonic Nanostructures with Multiple Dipolar Resonances
Nano LettersDOI: 10.1021/nl400046z
Source: Nano Letters - February 11, 2013 Category: Nanotechnology Authors: Lev Chuntonov and Gilad Haran Source Type: research

Frequency-Multiplication High-Output Triboelectric Nanogenerator for Sustainably Powering Biomedical Microsystems
Nano LettersDOI: 10.1021/nl3045684
Source: Nano Letters - February 11, 2013 Category: Nanotechnology Authors: Xiao-Sheng Zhang, Meng-Di Han, Ren-Xin Wang, Fu-Yun Zhu, Zhi-Hong Li, Wei Wang and Hai-Xia Zhang Source Type: research

Aspect Ratio Dependence of Auger Recombination and Carrier Multiplication in PbSe Nanorods
Nano LettersDOI: 10.1021/nl304426y
Source: Nano Letters - February 11, 2013 Category: Nanotechnology Authors: Lazaro A. Padilha, John T. Stewart, Richard L. Sandberg, Wan Ki Bae, Weon-Kyu Koh, Jeffrey M. Pietryga and Victor I. Klimov Source Type: research

Colloidal Aggregates of Pd Nanoparticles Supported by Larch Arabinogalactan
The Journal of Physical Chemistry BDOI: 10.1021/jp3118242
Source: Journal of Physical Chemistry B - February 11, 2013 Category: Chemistry Authors: Ekaterina R. Gasilova, Galina N. Matveeva, Galina P. Aleksandrova, Boris G. Sukhov and Boris A. Trofimov Source Type: research

Electronic and Magnetic Properties of Zigzag Boron-Nitride Nanoribbons with Even and Odd-Line Stone-Wales (5–7 Pair) Defects
The Journal of Physical Chemistry CDOI: 10.1021/jp310614u
Source: The Journal of Physical Chemistry C - February 11, 2013 Category: Chemistry Authors: SRKC Sharma Yamijala and Swapan K. Pati Source Type: research

Transition from Nanoparticles to Nanoclusters: Microscopic and Spectroscopic Investigation of Size-Dependent Physicochemical Properties of Polyamine-Functionalized Silver Nanoclusters
The Journal of Physical Chemistry CDOI: 10.1021/jp3091792
Source: The Journal of Physical Chemistry C - February 11, 2013 Category: Chemistry Authors: Fei Qu, Nian Bing Li and Hong Qun Luo Source Type: research

Magnetoelectric Control of Superparamagnetism
Nano LettersDOI: 10.1021/nl3034637
Source: Nano Letters - February 11, 2013 Category: Nanotechnology Authors: Hyungsuk K. D. Kim, Laura T. Schelhas, Scott Keller, Joshua L. Hockel, Sarah H. Tolbert and Gregory P. Carman Source Type: research

Multilayered Alkyd Resin/Nanocellulose Coatings for Use in Renewable Packaging Solutions with a High Level of Moisture Resistance
Industrial & Engineering Chemistry ResearchDOI: 10.1021/ie301785a
Source: Industrial and Engineering Chemical Research - February 11, 2013 Category: Chemistry Authors: Christian Aulin and Göran Ström Source Type: research

Electrospun Self-Supporting Nanocomposite Films of Na9[EuW10O36]·32H2O/PAN as pH-Modulated Luminescent Switch
Industrial & Engineering Chemistry ResearchDOI: 10.1021/ie302712s
Source: Industrial and Engineering Chemical Research - February 11, 2013 Category: Chemistry Authors: Xiaoting Wang, Jianqiang Wang, Ryo Tsunashima, Kai Pan, Bing Cao and Yu-Fei Song Source Type: research

High-Active Anatase TiO2 Nanosheets Exposed with 95% {100} Facets Toward Efficient H2 Evolution and CO2 Photoreduction
ACS Applied Materials & InterfacesDOI: 10.1021/am302631b
Source: ACS Applied Materials and Interfaces - February 11, 2013 Category: Materials Science Authors: Hua Xu, Shuxin Ouyang, Peng Li, Tetsuya Kako and Jinhua Ye Source Type: research

Multifunctional Gold Nanoparticles for Diagnosis and Therapy of Disease
Molecular PharmaceuticsDOI: 10.1021/mp3005885
Source: Molecular Pharmaceutics - February 11, 2013 Category: Drugs & Pharmacology Authors: Aneta J. Mieszawska, Willem J. M. Mulder, Zahi A. Fayad and David P. Cormode Source Type: research

How “Hollow” Are Hollow Nanoparticles?
Journal of the American Chemical SocietyDOI: 10.1021/ja311926r
Source: Journal of the American Chemical Society - February 11, 2013 Category: Chemistry Authors: Paul Podsiadlo, Soon Gu Kwon, Bonil Koo, Byeongdu Lee, Vitali B. Prakapenka, Przemyslaw Dera, Kirill K. Zhuravlev, Galyna Krylova and Elena V. Shevchenko Source Type: research

Size and Structure Dependence of Electronic States in Thiolate-Protected Gold Nanoclusters of Au25(SR)18, Au38(SR)24, and Au144(SR)60
The Journal of Physical Chemistry CDOI: 10.1021/jp400785f
Source: The Journal of Physical Chemistry C - February 11, 2013 Category: Chemistry Authors: Tsutomu Ohta, Masahiro Shibuta, Hironori Tsunoyama, Yuichi Negishi, Toyoaki Eguchi and Atsushi Nakajima Source Type: research

Aromatic Groups Help Light Up Micelles
Photoactive polyaromatic groups form molecular capsules that can host dye molecules for sensor applications
Source: NanoFocus - February 11, 2013 Category: Nanotechnology Authors: Elizabeth K. Wilson Source Type: research

CO Serves As Its Own Cocatalyst On Gold
The presence of neighboring CO molecules on gold nanoclusters enhances dioxygen oxidation of CO to carbon dioxide
Source: NanoFocus - February 11, 2013 Category: Nanotechnology Authors: Mitch Jacoby Source Type: research

Magnetic Nanoparticles Banish Bacteria From Blood
Bacteria-binding materials could be used to scavenge pathogens in the blood to treat septic infections
Source: NanoFocus - February 11, 2013 Category: Nanotechnology Authors: Bethany Halford Source Type: research

Splitting Up Fatty Acids
Nanofiltration membrane technique separates vegetable oil molecules, opening the way to their broader industrial use
Source: NanoFocus - February 11, 2013 Category: Nanotechnology Authors: Stephen K. Ritter Source Type: research

Quantum Confined Stark Effect in Au8 and Au25 Nanoclusters
The Journal of Physical Chemistry CDOI: 10.1021/jp3116676
Source: The Journal of Physical Chemistry C - February 11, 2013 Category: Chemistry Authors: Xiaoming Wen, Pyng Yu, Yon-Rui Toh and Jau Tang Source Type: research

A Novel Rapid One-Step Synthesis of Manganese Oxide Nanoparticles at Room Temperature Using Poly(dimethylsiloxane)
Industrial & Engineering Chemistry ResearchDOI: 10.1021/ie302971g
Source: Industrial and Engineering Chemical Research - February 11, 2013 Category: Chemistry Authors: Trung-Dung Dang, Marcos A. Cheney, Shizhi Qian, Sang Woo Joo and Bong-Ki Min Source Type: research

Molecular dynamics simulations on the interactions of low molecular weight natural organic acids with C(60).
In this study, molecular dynamics (MD) simulation was employed to investigate the interactions between both neutral and ionic LOAs with C(60) in vacuum and water. The results showed that the adsorptions of all LOAs on C(60) in energy are favorable, and the aromatic acids have stronger interactions with C(60) than the aliphatic acids in vacuum and water. The interaction energies (E(int)) of the LOA anions with C(60) were weaker than those of their corresponding neutral LOA molecules. The models were also developed to predict and interpret E(int) based on the results from MD simulations. Dispersion, induction and hydrophobic...
Source: Chemosphere - February 11, 2013 Category: Chemistry Authors: Sun Q, Xie HB, Chen J, Li X, Wang Z, Sheng L Tags: Chemosphere Source Type: research

The "Vampirome": Transcriptome and Proteome Analysis of the Submaxillary and Accessory Glands of the Vampire Bat Desmodus rotundus, a Vector of Human Rabies.
Abstract Vampire bats are notorious for being the sole mammals that strictly feed on fresh blood for their survival. While their saliva has been historically associated with anticoagulants, only one antihemostatic (plasminogen activator) has been molecularly and functionally characterized. Here, RNAs from both principal submandibular and accessory glands of Desmodus rotundus were extracted, and ~ 200 million reads were sequenced by Illumina. The principal gland was enriched with plasminogen activators with fibrinolytic properties, members of lipocalin and secretoglobin families, which bind prohemostatic prostagland...
Source: Journal of Proteomics - February 11, 2013 Category: Biochemistry Authors: Francischetti IM, Assumpção TC, Ma D, Li Y, Vicente EC, Uieda W, Ribeiro JM Tags: J Proteomics Source Type: research

Self-Assembly of Anionic Porphyrins and Alkaline or Alkaline Earth Metal Ions Mediated by Cucurbit[7,8]uril.
Abstract Nanoscaled coordination polymers based on biologically prevalent ions have potential applications in drug delivery and biomedical imaging. Herein, coordination polymer nanoparticles of anionic porphyrins, including meso-tetra(4-carboxyphenyl)-porphyrin (H(2) TCPP(4-) ) and meso-tetra(4-sulfonatophenyl)-porphyrin (H(2) TPPS(4-) ), and alkaline or alkaline earth metal cations, such as K(+) and Ca(2+) , were constructed in aqueous solution in the presence of cucurbit[7]uril (CB7) or cucurbit[8]uril (CB8). UV/Vis absorption and fluorescence spectroscopy, dynamic light scattering (DLS), scanning electron spectr...
Source: Chemphyschem - February 11, 2013 Category: Chemistry Authors: Lei W, Jiang G, Zhou Q, Hou Y, Zhang B, Cheng X, Wang X Tags: Chemphyschem Source Type: research

Lessons in microcapsule assembly from imaging delivery of a bioluminescent enzyme.
This study informs us of the availability of bioactive molecules located in different positions within microcapsules and will enable better microcapsule construction in line with the intended application, particularly delivery of functional proteins to cells. PMID: 23398503 [PubMed - as supplied by publisher]
Source: Biomacromolecules - February 11, 2013 Category: Biochemistry Authors: Pavlov AM, Sukhorukov GB, Gould DJ Tags: Biomacromolecules Source Type: research

Protein sieving characteristics of sub-20-nm pore size filters at varying ionic strength during nanofiltration of Coagulation Factor IX.
Abstract Nanofiltration assures that protein therapeutics are free of adventitious agents such as viruses. Nanofilter pores must allow passage of protein drugs but be small enough to retain viruses. Five nanofilters have been evaluated to identify those that can be used interchangeably to yield a high purity Coagulation Factor IX product. When product preparations prior to nanofiltration were analyzed using electrophoresis, Western blot, liquid chromatography - tandem mass spectrometry and size exclusion HPLC, factor IX, inter - α - trypsin inhibitor and C4b binding protein (C4BP) were observed. C4BP was removed f...
Source: Biologicals : Journal of the International Association of Biological Standardization - February 11, 2013 Category: Biotechnology Authors: Winkler CJ, Jorba N, Shitanishi KT, Herring SW Tags: Biologicals Source Type: research

Three-Dimensional Arrays Using GlycoPEG Tags: Glycan Synthesis, Purification and Immobilisation.
We present a tag-based approach that accelerates the preparation of glycan arrays on all levels by improving the synthesis, the purification and immobilisation of oligosaccharides. Glycan primers were chemically attached to bifunctional polyethyleneglycol (PEG) tags, extended enzymatically with the help of recombinant glycosyltransferases and finally purified by ultrafiltration. When printed directly onto activated glass slides, these glycoPEG tags afforded arrays with exceptionally high sensitivity, low background and excellent spot morphology. Likewise, the conjugation of glycoPEG tags to latex nanoparticles yielded mult...
Source: Chemistry - February 11, 2013 Category: Chemistry Authors: Etxebarria J, Serna S, Beloqui A, Martin-Lomas M, Reichardt NC Tags: Chemistry Source Type: research

A General Strategy Towards Encapsulation of Nanoparticles in Sandwiched Graphene Sheets and the Synergic Effect on Energy Storage.
Abstract A novel and universal approach towards the unique encapsulation of nanoparticles in the sandwiched graphene sheets is presented here. In the method, a low-cost, sustainable and environmentally friendly carbon source, glucose, is firstly applied to yield the high-quality, uniform and coupled graphene sheets in a large scale, and the pre-fabricated hydrated nanosheets act as the sacrificial templates to generate the enveloped metallic nanoparticles. After controllable oxidation or removal of the encapsulated nanoparticles, sandwiched nanocomposite with oxidizes nanoparticles encapsulated in graphene sheets o...
Source: Chemistry - February 11, 2013 Category: Chemistry Authors: Wang Y, Bai Y, Li X, Feng Y, Zhang H Tags: Chemistry Source Type: research

Evidence for Kinetic Nucleation in Helical Nanofiber Formation Directed by Chiral Solvent for a Perylene Bisimide Organogelator.
Abstract The self-assembly behavior of an achiral perylene bisimide (PBI) organogelator that bears two 3,4,5-tridodecyloxybenzoylaminoethyl substituents at the imide positions has been investigated in chiral solvents (R)- and (S)-limonene in great detail by circular dichroism (CD) spectroscopy and atomic force microscopy (AFM). CD spectroscopic studies on dilute solutions revealed a preferential population of one-handed helical assemblies in chiral solvent with an enantiomeric excess close to 100 %, whereas AFM images of more than 100 nanofibers of the organogel obtained from more concentrated solutions were foun...
Source: Chemistry - February 11, 2013 Category: Chemistry Authors: Stepanenko V, Li XQ, Gershberg J, Würthner F Tags: Chemistry Source Type: research

Carbon Nanotubes Bridged with Graphene Nanoribbons and Their Use in High-Efficiency Dye-Sensitized Solar Cells.
Abstract Tie a ribbon on it: Multiwalled carbon nanotubes were partially unzipped to produce nanoribbons that bridged the nanotubes. The unique structure favors rapid charge transport when used as counter electrodes in dye-sensitized solar cells, resulting in a maximum energy conversion efficiency of 8.23 % versus 7.61 % for a conventional platinum electrode. PMID: 23401014 [PubMed - as supplied by publisher]
Source: Angewandte Chemie - February 11, 2013 Category: Chemistry Authors: Yang Z, Liu M, Zhang C, Tjiu WW, Liu T, Peng H Tags: Angew Chem Int Ed Engl Source Type: research

Revealing Interface-Assisted Charge-Transfer Mechanisms by Using Silicon Nanowires as Local Probes.
Abstract A semiconductor/environment interface has been formed in which suspended silicon nanowires (SiNWs) are in direct contact with photoactive TiO(2) quantum dots. The photoactivity of TiO(2) competes with the intrinsic photoresponses of p-type silicon nanowires. Rational control of the competitive mechanism realizes remarkable mirror-imaging photo-switching and superior rectifying effects in a single SiNW-based device. PMID: 23401062 [PubMed - as supplied by publisher]
Source: Angewandte Chemie - February 11, 2013 Category: Chemistry Authors: Wang J, Wang Z, Li Q, Gan L, Xu X, Li L, Guo X Tags: Angew Chem Int Ed Engl Source Type: research

Polythiophene infiltrated TiO(2) nanotubes as high-performance supercapacitor electrodes.
We report exceptional electrochemical specific capacitance (640 F g(-1)) for polythiophene (PTh) infiltrated into TiO(2) nanotubes (TNTs) by a controlled electropolymerization route. The resulting PTh-TNTs also exhibit excellent electrochemical behavior with long-term stability. This reproducible and superior performance of PTh-TNT electrodes makes them attractive candidates for energy storage. PMID: 23396315 [PubMed - as supplied by publisher]
Source: Chemical Communications - February 11, 2013 Category: Chemistry Authors: Ambade RB, Ambade SB, Shrestha NK, Nah YC, Han SH, Lee W, Lee SH Tags: Chem Commun (Camb) Source Type: research

Flexible SnO(2) hollow nanosphere film based high-performance ultraviolet photodetector.
Abstract A high-quality SnO(2) hollow-sphere nanofilm based flexible photodetector was constructed via 'water-oil' interfacial assembling. The photodetector showed high sensitivity, superb stability, and was also able to bear significant external mechanical forces. PMID: 23396397 [PubMed - as supplied by publisher]
Source: Chemical Communications - February 11, 2013 Category: Chemistry Authors: Tian W, Zhang C, Zhai T, Li SL, Wang X, Liao M, Tsukagoshi K, Golberg D, Bando Y Tags: Chem Commun (Camb) Source Type: research

Facile preparation of chiral penicillamine protected gold nanoclusters and their applications in cell imaging.
Abstract A facile synthesis of chiral penicillamine protected Au nanoclusters with different optical properties has been reported. We have for the first time observed the reversal of CD signals after the scaffolds adsorbed onto the surface of Au NCs. Such Au NCs are utilized for bioimaging due to their low cytotoxicity and stable fluorescence emission. PMID: 23396404 [PubMed - as supplied by publisher]
Source: Chemical Communications - February 11, 2013 Category: Chemistry Authors: Yang X, Gan L, Han L, Li D, Wang J, Wang E Tags: Chem Commun (Camb) Source Type: research

Not a molecule, not a polymer, not a substrate… the many faces of graphene as a chemical platform.
Abstract What is, exactly, graphene? While we often describe graphene with many superlative adjectives, it is difficult to force this material into a single chemical class. Graphene's typical size is atomistic in one dimension of space, and mesoscopic in the other two. This provides graphene with several, somehow contrasting properties. Graphene can be patterned, etched and coated as a substrate. Though, it can also be processed in solution and chemically functionalized as a molecule. It could be considered as a polymer, obtained by bottom-up assembly of carbon atoms or small molecules, but it can be obtained also ...
Source: Chemical Communications - February 11, 2013 Category: Chemistry Authors: Palermo V Tags: Chem Commun (Camb) Source Type: research

Human serum albumin (HSA) nanoparticles stabilized with intermolecular disulfide bonds.
Abstract We have presented a self-cross-link strategy to fabricate HSA nanoparticles using a desolvation method. The nanoparticles were stabilized by intermolecular disulfide bonds while still dissolvable in reducing media. The fabrication process does not involve any toxic chemicals and hence the nanoparticles may be useful as a drug carrier. PMID: 23396533 [PubMed - as supplied by publisher]
Source: Chemical Communications - February 11, 2013 Category: Chemistry Authors: Wang W, Huang Y, Zhao S, Shao T, Cheng Y Tags: Chem Commun (Camb) Source Type: research

An inorganic-organic composite framework with an unprecedented 3D heterometallic inorganic connectivity and white-light emission.
Abstract The first example of an inorganic-organic composite framework with a 3D inorganic Cd-O-M (M = Cd, Rb) connectivity, featuring a unique {Cd(7)Rb}(n) helix and nanoscale {Cd(16)Rb(4)} and {Cd(18)Rb(2)} rings, has been constructed and structurally characterized. This compound exhibits white-light emission and a wavelength-dependent photochromic response. PMID: 23396541 [PubMed - as supplied by publisher]
Source: Chemical Communications - February 11, 2013 Category: Chemistry Authors: Zhang H, Lin P, Shan X, Du F, Li Q, Du S Tags: Chem Commun (Camb) Source Type: research

Nucleic acid-mesoporous silica nanoparticle conjugates for keypad lock security operation.
Abstract We fabricated a keypad lock system based on mesoporous silica nanoparticle (MSN)-nucleic acid conjugates. DNA strand displacement triggered the release of guest molecules entrapped within the pores of MSNs through logic-based control. PMID: 23396555 [PubMed - as supplied by publisher]
Source: Chemical Communications - February 11, 2013 Category: Chemistry Authors: Pu F, Liu Z, Ren J, Qu X Tags: Chem Commun (Camb) Source Type: research

In situ controlled growth of ZnIn(2)S(4) nanosheets on reduced graphene oxide for enhanced photocatalytic hydrogen production performance.
Abstract A reduced graphene oxide (RGO)-ZnIn(2)S(4) nanosheet composite was successfully synthesized via an in situ controlled growth process. The as-obtained RGO-ZnIn(2)S(4) composite showed excellent visible light H(2) production activity in the absence of noble metal cocatalysts. PMID: 23396572 [PubMed - as supplied by publisher]
Source: Chemical Communications - February 11, 2013 Category: Chemistry Authors: Zhou J, Tian G, Chen Y, Meng X, Shi Y, Cao X, Pan K, Fu H Tags: Chem Commun (Camb) Source Type: research

Influence of Composition on the Performance of Sintered Cu(In,Ga)Se(2) Nanocrystal Thin-Film Photovoltaic Devices.
Influence of Composition on the Performance of Sintered Cu(In,Ga)Se(2) Nanocrystal Thin-Film Photovoltaic Devices. ChemSusChem. 2013 Feb 11; Authors: Akhavan VA, Harvey TB, Stolle CJ, Ostrowski DP, Glaz MS, Goodfellow BW, Panthani MG, Reid DK, Vanden Bout DA, Korgel BA Abstract Thin-film photovoltaic devices (PVs) were prepared by selenization using oleylamine-capped Cu(In,Ga)Se(2) (CIGS) nanocrystals sintered at a high temperature (>500 °C) under Se vapor. The device performance varied significantly with [Ga]/[In+Ga] content in the nanocrystals. The highest power conversion efficiency (PCE) observed ...
Source: ChemSusChem - February 11, 2013 Category: Chemistry Authors: Akhavan VA, Harvey TB, Stolle CJ, Ostrowski DP, Glaz MS, Goodfellow BW, Panthani MG, Reid DK, Vanden Bout DA, Korgel BA Tags: ChemSusChem Source Type: research

Effects of surface modification of PLGA-PEG-PLGA nanoparticles on loperamide delivery efficiency across the blood-brain barrier
In this study, we developed a nanoparticle system for drug delivery across the blood–brain barrier (BBB). The nanoparticle consisting of loperamide and poly(lactide-co-glycolide)-poly(ethylene glycol)-poly(lactide-co-glycolide) (PLGA-PEG-PLGA) triblock copolymer were prepared by the nanoprecipitation method; then the nanoparticles were coated with poloxamer 188 or polysorbate 80. The effects of poloxamer 188 or polysorbate 80 on the physicochemical and pharmaceutical properties of the coated nanoparticles were investigated. Loperamide, which does not cross the blood–brain barrier (BBB) but exerts antinociceptiv...
Source: Journal of Biomaterials Applications - February 11, 2013 Category: Materials Science Authors: Chen, Y.-C., Hsieh, W.-Y., Lee, W.-F., Zeng, D.-T. Tags: Articles Source Type: research

Gene expression in osteoblast cells treated with submicron to nanometer hydroxyapatite-mullite eluate particles
The present research focused on determining the effect of hydroxyapatite-20 wt% mullite (H20M) particle eluates on apoptosis and differentiation of human fetal osteoblast (hFOB) cells. The H20M particles (257 ± 37 nm) were prepared, starting with the production of a nanocomposite using a unique route of spark plasma sintering, followed by a repeated grinding-cryo treatment and elution process. Tetrazolium based cytotoxicity assay results showed a time- and dose-dependent effect of H20M particle eluates on hFOB cytotoxicity. In particular, the results revealed statistically reduced cell viability after hFOB were expo...
Source: Journal of Biomaterials Applications - February 11, 2013 Category: Materials Science Authors: Kalmodia, S., Basu, B., Webster, T. J. Tags: Articles Source Type: research