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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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Preparation of dual‐layer acetylated methyl cellulose hollow fiber membranes via co‐extrusion using thermally induced phase separation and non‐solvent induced phase separation methods

25-Jul-2015 | Hanna Jang, Du‐Hyun Song, Hye‐Jin Lee, Seong‐Han Lim, In‐Chul Kim, Young‐Nam Kwon, Journal of Applied Polymer Science, 2015

ABSTRACT Dual‐layer acetylated methyl cellulose (AMC) hollow fiber membranes were prepared by coupling the thermally induced phase separation (TIPS) and non‐solvent induced phase separation (NIPS) methods through a co‐extrusion process. The TIPS layer was optimized by investigating the effects ...

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Magnetic molecularly imprinted polymers synthesized by surface‐initiated reversible addition‐fragmentation chain transfer polymerization for the enrichment and determination of synthetic estrogens in aqueous solution

23-Jul-2015 | Fangfang Chen, Jingjing Zhang, Minjun Wang, Jie Kong, Journal of Separation Science, 2015

J. Sep. Sci. 2015, 38, 2670–2676 DOI: 10.1002/jssc.201500407 The novel magnetic molecularly imprinted polymers for enrichment of synthetic estrogens were synthesized via surface‐initiated reversible addition addition‐fragmentation chain transfer polymerization using diethylstilbestrol ...

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Modulation of Excited State Proton Transfer Dynamics of a Lactim–Lactam Tautomeric System in Different Block Copolymer–Surfactant Aggregates

23-Jul-2015 | Debarati Ray; Animesh Pramanik; Nikhil Guchhait, Journal of Physical Chemistry B, 2015

The proton transfer (PT) process in 1-(2-hydroxy-5-chloro-phenyl)-3,5-dioxo-1H-imidazo-[3,4-b]isoindole (ADCL) has been studied in three different copolymer–surfactant supramolecular assemblies prepared in aqueous 1% P123 triblock copolymer micellar solution with varying concentrations of ...

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Materials, Vol. 8, Pages 4593-4607: Engineering of Iron-Based Magnetic Activated Carbon Fabrics for Environmental Remediation

22-Jul-2015 | Haham, Hai ; Grinblat, Judith ; Sougrati, Moulay-Tahar ; Stievano, Lorenzo ; Margel, Shlomo, Materials, 2015

Magnetic Fe3O4, Fe and Fe/Pd nanoparticles embedded within the pores of activated carbon fabrics (ACF) were prepared by impregnation of the ACF in iron acetylacetanoate (Fe(acac)3) ethanol solution, followed by thermal decomposition of the embedded iron precursor at 200, 400 and 600 °C in an ...

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Reactivity of an Unsaturated Iridium(III) Phosphoramidate Complex, [Cp*Ir{κ2-N,O}][BArF4]

22-Jul-2015 | Marcus W. Drover; Heather C. Johnson; Laurel L. Schafer; Jennifer A. Love; Andrew S. Weller, Organometallics, 2015

The three-legged piano stool complex [Cp*Ir(κ2-N,O-Xyl(N)P(O)(OEt)2)(Cl)], [1] (Cp* = η5-C5Me5, Xyl = 2,6-dimethylphenyl), was prepared from reaction of 0.5 equiv of [Cp*IrCl2]2 with the sodiated phosphoramidate ligand Na[Xyl(N)P(O)(OEt)2]. Treatment of [1] with Na[BArF4], [BArF4] = ...

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Novel Access to Propagation Rate Coefficients of Radical Polymerization by the SP–PLP–EPR Method

21-Jul-2015 | Hendrik Kattner, Patrick Drawe, Michael Buback, Macromolecular Chemistry and Physics, 2015

A novel method for kp measurement is presented, in which time‐resolved electron paramagnetic resonance detection of radical concentration after applying a single laser pulse (SP−PLP−EPR) is carried out in conjunction with measuring monomer conversion induced by the laser pulse. The method is ...

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Remediation of diesel‐contaminated soil using in situ chemical oxidation (ISCO) and the effects of common oxidants on the indigenous microbial community: a comparison study

21-Jul-2015 | Ku‐Fan Chen, Yu‐Chen Chang, Wan‐Ting Chiou, Journal of Chemical Technology & Biotechnology, 2015

Abstract Background In this study, batch experiments were conducted using diesel‐contaminated soil collected from a former gas station to evaluate the efficiency of diesel removal by in situ chemical oxidation (ISCO) and the effects of different oxidants on the indigenous microbial ...

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An Approach to More Accurate Model Systems for Purple Acid Phosphatases (PAPs)

21-Jul-2015 | Paul V. Bernhardt; Simone Bosch; Peter Comba; Lawrence R. Gahan; Graeme R. Hanson; Valeriu Mereacre; Christopher J. ..., Inorganic Chemistry, 2015

The active site of mammalian purple acid phosphatases (PAPs) have a dinuclear iron site in two accessible oxidation states (FeIII2 and FeIIIFeII), and the heterovalent is the active form, involved in the regulation of phosphate and phosphorylated metabolite levels in a wide range of organisms. ...

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