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TiO2/clay as a heterogeneous catalyst in photocatalytic/photochemical oxidation of anionic reactive blue 19

23-11-2014 | Author(s): Haithem Bel Hadjltaief , Maria Elena Galvez , Mourad Ben Zina , Patrick Da Costa, Arabian Journal of Chemistry, 2014

Publication date: Available online 10 November 2014 Source:Arabian Journal of Chemistry Author(s): Haithem Bel Hadjltaief , Maria Elena Galvez , Mourad Ben Zina , Patrick Da Costa A TiO2-coated Tunisian clay (TiO2–clay) was synthesized by a typical impregnation method. The ...

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Molecular Recognition of Caffeine in Solution and Solid State

20-11-2014 | Author(s): Prithidipa Sahoo, Bioorganic Chemistry, 2014

Publication date: Available online 15 November 2014 Source:Bioorganic Chemistry Author(s): Prithidipa Sahoo The molecular recognition of caffeine in both solution and solid state is important to understand different enzymatic reactions i.e., enzyme-substrate interactions, immunological ...

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Dynamic Fluoroalkyl Polyethylene Glycol Co‐Polymers: A New Strategy for Reducing Protein Adhesion in Lab‐on‐a‐Chip Devices

20-11-2014 | Mahesh K. Sarvothaman, Kris S. Kim, Brendon Seale, Peter M. Brodersen, Gilbert C. Walker, Aaron R. Wheeler, Advanced Functional Materials, 2014

Non‐specific adsorption of biomolecules (or “biofouling”) is a major problem in microfluidics and many other applications. The problem is particularly pernicious in digital microfluidics (DMF, a technique in which droplets are manipulated electrodynamically on an array of electrodes coated with ...

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Deriving the Molecular Composition of Middle Distillates by Integrating Statistical Modeling with Advanced Hydrocarbon Characterization

17-11-2014 | Anton Alvarez-Majmutov; Jinwen Chen; Rafal Gieleciak; Darcy Hager; Nicole Heshka; Sara Salmon, Energy & Fuels, 2014

To fully advance our understanding of hydrocarbon conversion chemistry requires powerful analytical methods to qualitatively and quantitatively characterize complex petroleum fractions at the molecular level. In the absence of such tools, an alternative solution is to model the molecular ...

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Biocompatible Infinite‐Coordination‐Polymer Nanoparticle–Nucleic‐Acid Conjugates for Antisense Gene Regulation

13-11-2014 | Colin M. Calabrese, Timothy J. Merkel, William E. Briley, Pratik S. Randeria, Suguna P. Narayan, Jessica L. Rouge, D ..., Angewandte Chemie International Edition, 2014

Abstract Herein, we report the synthesis of DNA‐functionalized infinite‐coordination‐polymer (ICP) nanoparticles as biocompatible gene‐regulation agents. ICP nanoparticles were synthesized from ferric nitrate and a ditopic 3‐hydroxy‐4‐pyridinone (HOPO) ligand bearing a pendant azide. Addition ...

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Bending Nanofibers into Nanospirals: Coordination Chemistry as a Tool for Shaping Hydrophobic Assemblies

13-11-2014 | Elizaveta Kossoy, Haim Weissman, Boris Rybtchinski, Chemistry - A European Journal, 2014

Abstract In the current work, we demonstrate how coordination chemistry can be employed to direct self‐assembly based on strong hydrophobic interactions. To investigate the influence of coordination sphere geometry on aqueous self‐assembly, we synthesized complexes of the amphiphilic perylene ...

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EXAFS Study of the Speciation of Protactinium(V) in Aqueous Hydrofluoric Acid Solutions

12-11-2014 | Stéphanie M. De Sio; Richard E. Wilson, Inorganic Chemistry, 2014

The speciation of protactinium(V) in hydrofluoric acid (HF) solutions was studied using X-ray absorption spectroscopy. Extended X-ray absorption fine structure measurements were performed on an aqueous solution of 0.05 M protactinium(V) with various HF concentrations ranging from 0.5 to 27 M in ...

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Functionalization of hybrid poly(n‐isopropylacrylamide) hydrogels for Escherichia coli cell capture via adsorbed intermediate dye molecule

11-11-2014 | By Jarod Gregory, Jonathon Cannell, Matthew Kofron, Lilit Yeghiazarian, Vasile Nistor, Journal of Applied Polymer Science, 2014

ABSTRACT Poly(n‐isopropylacrylamide) Laponite (PNIPAM‐Lap) hybrid hydrogels, which use the synthetic clay Laponite as a crosslinker, permanently adsorb cationic laser dyes out of solution. This proof‐of‐concept expounds on this capability by adsorbing an intermediate dye molecule and using it ...

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Mechanistic Contrasts between Manganese and Rhenium Bipyridine Electrocatalysts for the Reduction of Carbon Dioxide

06-11-2014 | Christoph Riplinger; Matthew D. Sampson; Andrew M. Ritzmann; Clifford P. Kubiak; Emily A. Carter, Journal of the American Chemical Society, 2014

[Re(bpy)(CO)3]− is a well-established homogeneous electrocatalyst for the reduction of CO2 to CO. Recently, substitution of the more abundant transition metal Mn for Re yielded a similarly active electrocatalyst, [Mn(bpy)(CO)3]−. Compared to the Re catalyst, this Mn catalyst operates at a lower ...

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Dissociation of Diglycolamide Complexes of Ln3+ (Ln = La–Lu) and An3+ (An = Pu, Am, Cm): Redox Chemistry of 4f and 5f Elements in the Gas Phase Parallels Solution Behavior

05-11-2014 | Yu Gong; Guoxin Tian; Linfeng Rao; John K. Gibson, Inorganic Chemistry, 2014

Tripositive lanthanide and actinide ions, Ln3+ (Ln = La–Lu) and An3+ (An = Pu, Am, Cm), were transferred from solution to gas by electrospray ionization as Ln(L)33+ and An(L)33+ complexes, where L = tetramethyl-3-oxa-glutaramide (TMOGA). The fragmentation chemistry of the complexes was examined ...

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