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Heavy Water: A Simple Solution to Increasing Brightness of Fluorescence Proteins in Super-resolution Imaging

29-Jul-2015 | Wei Qiang Ong; Yemima Rose Citron; Joerg Schnitzbauer; Daichi Kamiyama; Bo Huang, Chemical Communication, 2015

Photoactivatable fluorescent proteins (PA-FPs) are widely used in live single-molecule super-resolution imaging but emit substantially fewer photons than organic dyes do. Here, we show that in heavy water (D2O) instead of H2O, common PA-FPs emit 26 %–54 % more photons, effectively improving the ...

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Efficient mineralization of benzoic and phthalic acids in water by catalytic ozonation using a nickel oxide catalyst

28-Jul-2015 | Diana Magallanes; Julia L Rodriguez; TATYANA POZNIAK; MIGUEL A. Valenzuela; Luis A Lanturdo; Isaac Chairez, New Journal of Chemistry, 2015

Organic acids (OA) are usually used as a refractory model compounds that require prolonged reaction time for their mineralization by different treatments. In this study, benzoic and phthalic acids in aqueous solution, were significantly degraded and mineralized by catalytic ozonation in presence ...

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A high selectivity fluorescent chemosensor for cyanide anion based on a chalcone derivative in the present of iron (III) ion, and its capacity for living cell imaging in mixed aqueous system

28-Jul-2015 | wen yang; zhongqin cheng; yunlong xu; Jie Shao; weiqun zhou; Juan Xie; Mengying Li, New Journal of Chemistry, 2015

A donor-acceptor chalcone based 4-dimethylamino 4-fluorochalcone (1) is found exhibiting a distinct green fluorescence and has a good stability in CH3CN/water (V/V=1:9) buffer solution (Tris-HCl, pH=7.4), and that the in situ formed 1-Fe3+ complex upon addition of Fe3+ serves as a highly ...

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Reactive Modeling of the Initial Stages of Alkoxysilane Polycondensation: Effects of Precursor Molecule Structure and Solution Composition

28-Jul-2015 | Joshua D Deetz; Roland Faller, Soft Matter, 2015

Reactive molecular dynamics simulations were performed to study the polycondensation of alkoxysilane in solution with alcohol and water. The dynamic formation of siloxane clusters and rings was observed with simulation time. Two mechanisms for the growth of siloxanes were observed: monomer ...

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Temperature dependence of the rate constant for hydrogen atom reaction with Cl2−• in water by pulse radiolysis of aqueous HCl solution

27-Jul-2015 | Author(s): L. Kazmierczak, J. Szala-Bilnik, M. Wolszczak, D. Swiatla-Wojcik, Radiation Physics and Chemistry, 2015

Publication date: December 2015 Source:Radiation Physics and Chemistry, Volume 117 Author(s): L. Kazmierczak, J. Szala-Bilnik, M. Wolszczak, D. Swiatla-Wojcik The temperature dependence of the rate constant for the reaction of dichloride anion radical ( Cl 2 - • ) with ...

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A novel superabsorbent from raw corn straw and poly (acrylic acid)

25-Jul-2015 | Shuping Jin, Jun Chen, Jianying Mao, Guoren Yue, Yuqi Han, Xinghai Yu, Polymer Composites, 2015

A superabsorbent (CS/PAA SAR) for agriculture based on raw corn straw was prepared by free radical polymerization of acrylic acid (AA) in the presence of corn straw (CS) powder, which was used as received without any treatments. The water absorbency (WA) of SAR was investigated. The results show ...

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Magnetic and pH‐responsive starch‐g‐poly(acrylic acid‐coacrylamide)/graphene oxide superabsorbent nanocomposites: one‐pot synthesis, characterization and swelling behavior

24-Jul-2015 | Hossein Hosseinzadeh, Sonia Ramin, Starch - Stärke, 2015

Abstract A series of dual stimuli‐responsive starch‐based superabsorbent nanocomposites (SANCs) were prepared by a facile one‐pot strategy. The SNACs were synthesized via the simultaneous formation of magnetic iron oxide nanoparticles (MIONs) and in situ radical solution polymerization of ...

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Transfer Properties of Glycylglycine from Water to Aqueous NaNO3, NaClO4, and Na2SO4 Solutions

24-Jul-2015 | Chunli Liu; Li Zhou; Liqun Fan; Chonggui Ren, Journal of Chemical & Engineering Data, 2015

Enthalpies of solution and densities of glycylglycine in aqueous solutions of NaNO3, NaClO4, and Na2SO4 were measured at 298.15 K. Standard transfer enthalpies (ΔtrH0), standard transfer partial molar volume (ΔtrVϕ0), and hydration numbers (Nh) have been determined for glycylglycine. All of the ...

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Multiple Stimuli-Responsive and White-Light Emission of One-Pot Synthesized Block Copolymers Containing Poly(3-hexylthiophene) and Poly(triethyl glycol allene) Segments

24-Jul-2015 | Yan-Yu Hu; Ming Su; Cui-Hong Ma; Zhipeng Yu; Na Liu; Jun Yin; Yunsheng Ding; Zong-Quan Wu, Macromolecules, 2015

Conjugated block copolymers with tunable properties have attract considerable research interests in recent years. Herein, we report a series of novel block copolymers containing conjugated poly(3-hexylthiophene) (P3HT) and poly(triethyl glycol allene) (PTA) segments which were synthesized in one ...

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Thermoplastic softening behavior of organically modified polyoxotitanates: Effects of the amount of water and benzoylacetone for hydrolyzing alkoxides

23-Jul-2015 | Shinya Oda, Hiromitsu Kozuka, Hiroaki Uchiyama, Journal of Applied Polymer Science, 2015

ABSTRACT Organically modified polyoxotitanates were prepared by hydrolyzing titanium tetra‐n‐butoxide in the presence of benzoylacetone (BzAc) in solution at Ti(OC4H9)4 : BzAc : H2O : CH3COCH3 mole ratios of 1 : (1 or 2) : (1 or 10) : 20. The solutions were concentrated at 80°C and dried at ...

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