Saturday, December 20, 2014

Carbohydrate functionalization of silver nanoparticles modulates cytotoxicity and cellular uptake

Background: Increasing use of silver nanoparticles (Ag-NPs) in various products is resulting in a greater likelihood of human exposure to these materials. Nevertheless, little is still known about the influence of carbohydrates on the toxicity and cellular uptake of nanoparticles. Methods: Ag-NPs that functionalized with three different monosaccharides and ethylene glycol were synthesized and characterised. Oxidative stress and toxicity was evaluated by protein carbonylation and MTT assay, respectively. Cellular uptake was evaluated by confocal microscopy and ICP-MS. Results: Ag-NPs coated with galactose and mannose are considerably less toxic to neuronal-like cells and hepatocytes compared to particles functionalized by glucose, ethylene glycol or citrate. Toxicity correlated to oxidative stress but not to cellular uptake. Conclusions: Carbohydrate coating on silver nanoparticles modulates both oxidative stress and cellular uptake, but mainly the first has an impact on toxicity. These findings provide new perspectives on modulating the bioactivity of Ag-NPs by using carbohydrates.

David Kennedy

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Friday, December 19, 2014

Plasma Based Synthesis, Electron Microscopy, and Optical Characterization of Au-, Ag-, and Ag/Au-Core–Shell Nanoparticles

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The Journal of Physical Chemistry C

DOI: 10.1021/jp508818z




Sandra Peglow, Marga-Martina Pohl, Angela Kruth and Volker Brüser

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Tracking and Removing Br during the On-Surface Synthesis of a Graphene Nanoribbon

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The Journal of Physical Chemistry C

DOI: 10.1021/jp5106218




Christopher Bronner, Jonas Björk and Petra Tegeder

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Experimental Characterization of the Nanoparticle Size Effect on the Mechanical Stability of Nanoparticle-Based Coatings

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Nano Letters

DOI: 10.1021/nl503768r




Wajdi Heni, Laurent Vonna and Hamidou Haidara

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Gas-Phase Cation Exchange toward Porous Single-Crystal CoO Nanorods for Catalytic Hydrogen Production

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Chemistry of Materials

DOI: 10.1021/cm504076n




Hao Zhang, Tao Ling and Xi-Wen Du

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Electron Production by Sensitizing Gold Nanoparticles Irradiated by Fast Ions

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The Journal of Physical Chemistry C

DOI: 10.1021/jp511419n




Alexey V. Verkhovtsev, Andrei V. Korol and Andrey V. Solov’yov

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Substitution Effects on the Water Oxidation of Ruthenium Catalysts: A Quantum-Chemical Look

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The Journal of Physical Chemistry C

DOI: 10.1021/jp5075847




Abu Md Asaduzzaman, Derek Wasylenko, Curtis P. Berlinguette and Georg Schreckenbach

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Non-Fullerene Organic Solar Cells with 6.1% Efficiency through Fine-Tuning Parameters of the Film-Forming Process

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Chemistry of Materials

DOI: 10.1021/cm504140c




Xin Zhang, Chuanlang Zhan and Jiannian Yao

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Enlarged Pore Size in Mesoporous Silica Films Templated by Pluronic F127: Use of Poloxamer Mixtures and Increased Template/SiO2 Ratios in Materials Synthesized by Evaporation-Induced Self-Assembly

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Chemistry of Materials

DOI: 10.1021/cm5031624




Darren R. Dunphy, Pratik H. Sheth, Fred L. Garcia and C. Jeffrey Brinker

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Interface Engineering of Perovskite Hybrid Solar Cells with Solution-Processed Perylene–Diimide Heterojunctions toward High Performance

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Chemistry of Materials

DOI: 10.1021/cm5037919




Jie Min, Zhi-Guo Zhang, Yi Hou, Cesar Omar Ramirez Quiroz, Thomas Przybilla, Carina Bronnbauer, Fei Guo, Karen Forberich, Hamed Azimi, Tayebeh Ameri, Erdmann Spiecker, Yongfang Li and Christoph J. Brabec

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Spectroscopic in situ Measurements of the Relative Pt Skin Thicknesses and Porosities of Dealloyed PtMn (Ni, Co) Electrocatalysts

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The Journal of Physical Chemistry C

DOI: 10.1021/jp5098553




Keegan M. Caldwell, David E. Ramaker, Qingying Jia, Sanjeev Mukerjee, Joseph M. Ziegelbauer, Ratandeep S. Kukreja and Anusorn Kongkanand

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Electron Kinetics in He/CH4/CO2 Mixtures Used for Methane Conversion

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The Journal of Physical Chemistry C

DOI: 10.1021/jp509843e




André Janeco, Nuno R. Pinhão and Vasco Guerra

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Effect of Sodium Halides on the Surface Structure of Foam Films Stabilized by a Nonionic Surfactant

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The Journal of Physical Chemistry C

DOI: 10.1021/jp510258r




Christiaan Ridings, Cosima Stubenrauch and Gunther G. Andersson

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Dissolution and Absorption: A Molecular Mechanism of Mesopore Formation in Alkaline Treatment of Zeolite

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Chemistry of Materials

DOI: 10.1021/cm503151k




Dong Zhai, Liang Zhao, Yi Liu, Jingcheng Xu, Baojian Shen and Jinsen Gao

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Crystal Engineering and Charge Density Study of Pharmaceutical Nonlinear Optical Material: Melamine-Barbital Co-Crystal

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The Journal of Physical Chemistry C

DOI: 10.1021/jp509210g




Marlena Gryl, Simone Cenedese and Katarzyna Stadnicka

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Inelastic Electron Tunneling of C60 on Gold Surfaces from First-Principles Calculations

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The Journal of Physical Chemistry C

DOI: 10.1021/jp5103093




Audrey Ségerie, Vincent Liégeois and Benoît Champagne

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Correction to “Effect of Substrate Chemistry on the Bottom-Up Fabrication of Graphene Nanoribbons: Combined Core-Level Spectroscopy and STM Study”

The Journal of Physical Chemistry C

DOI: 10.1021/jp512253y




Konstantin A. Simonov, Nikolay A. Vinogradov, Alexander S. Vinogradov, Alexander V. Generalov, Elena M. Zagrebina, Nils Mårtensson, Attilio A. Cafolla, Tomas Carpy, John P. Cunniffe and Alexei B. Preobrajenski

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Phosphorescent Coordination Polymer Nanoparticles as a Three-in-One Platform for Optical Imaging, T1-Weighted Magnetic Resonance Imaging, and Photodynamic Therapy

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The Journal of Physical Chemistry C

DOI: 10.1021/jp508837e




Yang Lu, Fengfeng Xue, Hong Yang, Min Shi, Yuping Yan, Lijie Qin, Zhiguo Zhou and Shiping Yang

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