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Structural characterization of aqueous solution poly(oligo(ethylene oxide) monomethyl methacrylate)-grafted silica nanoparticles

02-Feb-2016 | Arnaldo T. Lorenzo; Ramakrishna Ponnapati; Tirtha Chatterjee; Ramanan Krishnamoorti, Faraday Discussions, 2016

The structure of aqueous dispersions of poly(oligo(ethylene oxide) monomethyl methacrylate)-grafted silica nanoparticles was characterized using contrast variation small-angle neutron scattering studies. Modeling the low hybrid concentration dispersion scattering data using a fuzzy sphere and a ...

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Nonsolvent-assisted Fabrication of Multi-scaled Polylactide as Superhydrophobic Surfaces

02-Feb-2016 | Yafang Chang; xuying liu; Huige Yang; LI Zhang; Zhe Cui; Mingjun Niu; Hongzhi Liu; Jinzhou Chen, Soft Matter, 2016

Solution-processing fabrication of superhydrophobic surfacescurrently becomes intriguing, owing to high-efficiency, low cost and energy-consuming. Here, a facile nonsolvent-assisted process was proposed to fabricate multi-scaled surface roughness in polylactide (PLA) films, thereby resulting in a ...

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Drug delivery function of carboxymethyl-[small beta]-cyclodextrin modified upconversion nanoparticles for adamantine phthalocyanine and their NIR-triggered cancer treatment

02-Feb-2016 | Ao Wang; Weiwei Jin; Enyi Chen; Jiahong Zhou; Lin Zhou; Shaohua Wei, Dalton Transactions, 2016

Near-infrared (NIR) light triggered photodynamic therapy (PDT), based on upconversion nanoparticles (UCNPs), has attracted great attention because of its high tissue penetration and low photodamage to living organisms. However, most UCNPs cannot be stably dispersed in aqueous solution and cannot ...

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Dispersion of Hydrophobic Co Supracrystal in Aqueous Solution

29-Jan-2016 | Nailiang Yang; Zhijie Yang; Marie Held; Pierre Bonville; Pierre-Antoine Albouy; Raphaël Lévy; Marie-Paule Pileni, ACS Nano, 2016

Assembly of nanoparticles into supracrystals provides a class of materials with interesting optical and magnetic properties. However, supracrystals are mostly obtained from hydrophobic particles and therefore cannot be manipulated in aqueous systems, limiting their range of applications. Here, we ...

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Label‐Free Fluctuation Spectroscopy Based on Coherent Anti‐Stokes Raman Scattering from Bulk Water Molecules

28-Jan-2016 | Mihailo D Rabasovic, Evangelos Sisamakis, Stefan Wennmalm, Jerker Widengren, ChemPhysChem, 2016

Nanoparticles (NPs) and molecules can be analyzed by Inverse Fluorescence Correlation Spectroscopy (iFCS) as they pass an open detection volume, displacing fractions of a fluorescence‐emitting solution in which they are dissolved out of the volume. iFCS does not require labeled NPs or molecules. ...

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Homogeneous and Heterogeneous (Fex, Cr1–x)(OH)3 Precipitation: Implications for Cr Sequestration

28-Jan-2016 | Chong Dai; Xiaobing Zuo; Bo Cao; Yandi Hu, Environmental Science & Technology, 2016

The formation of (Fe, Cr)(OH)3 nanoparticles determines the fate of aqueous Cr in many aquatic environments. Using small-angle X-ray scattering, precipitation rates of (Fe, Cr)(OH)3 nanoparticles in solution and on quartz were quantified from 0.1 mM Fe(III) solutions containing 0–0.25 mM Cr(III) ...

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Self-Assembly of Nanoparticle–Surfactant Complexes with Rodlike Micelles: A Molecular Dynamics Study

28-Jan-2016 | Abhinanden Sambasivam; Ashish. V. Sangwai; Radhakrishna Sureshkumar, Langmuir, 2016

The self-assembly of nanoparticles (NPs) with cationic micelles of cetyltrimethylammonium chloride (CTAC) is known to produce stable nanogels with rich rheological and optical properties. Coarse-grained molecular dynamics (MD) simulations are performed to explore the molecular mechanisms ...

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Enhancement of Nutraceutical Bioavailability using Excipient Nanoemulsions: Role of Lipid Digestion Products on Bioaccessibility of Carotenoids and Phenolics from Mangoes

28-Jan-2016 | Xuan Liu, Jinfeng Bi, Hang Xiao, David Julian McClements, Journal of Food Science, 2016

Abstract The ability of excipient nanoemulsions to increase the bioaccessibility of different kinds of nutraceuticals (phenolics and carotenoids) in mangoes was studied. Oil‐in‐water excipient nanoemulsions containing small digestible lipid nanoparticles (d MCT nanoemulsions > buffer ...

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The thermal, optical, flame retardant, and morphological consequence of embedding diacid‐capped ZnO into the recycled PET matrix

27-Jan-2016 | Shadpour Mallakpour, Mashal Javadpour, Journal of Applied Polymer Science, 2016

ABSTRACT We extended our work to a fast and facile nanocomposites (NCs) manufacturing by incorporation of ZnO nanoparticles (NPs) on to a recycled poly(ethylene terephthalate) PET as a polymer matrix prepared by a dissolution/reprecipitation method. The surface of ZnO NPs was functionalized ...

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Digitizing Gold Nanoparticle-Based Colorimetric Assay by Imaging and Counting Single Nanoparticles

27-Jan-2016 | Liang Yuan; Xian Wang; Yimin Fang; Chenbin Liu; Dan Jiang; Xiang Wo; Wei Wang; Hong-Yuan Chen, Analytical Chemistry, 2016

Gold colloid changes its color when the internanoparticle distance changes. On the basis of analyte-induced aggregation or disaggregation behavior of gold nanoparticles (AuNPs), versatile colorimetric assays have been developed for measuring various kinds of analytes including proteins, DNA, ...

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