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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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Fabrication of polyvinyl chloride based nanocomposite nanofiltration membrane: investigation of SDS/Al2O3 nanoparticle concentration and solvent ratio effects

21-Jul-2015 | E. Bagheripour, A. R. Moghadassi, S. M. Hosseini, Asia-Pacific Journal of Chemical Engineering, 2015

Abstract In the current research polyvinylchloride‐based nanocomposite nanofiltration membranes were prepared by using of sodium dodecyl sulfate (SDS) as additive, aluminum oxide (Al2O3) nanoparticles as inorganic filler and dimethylacetamide (DMAC)/tetrahydrofuran (THF) as solvents via phase ...

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Soy sauce odour induces and enhances saltiness perception

14-Jul-2015 | Napapan Chokumnoyporn, Sujinda Sriwattana, Yuthana Phimolsiripol, Damir Dennis Torrico, Witoon Prinyawiwatkul, International Journal of Food Science & Technology, 2015

Summary Developing products with reduced sodium content is one alternative for consumers interested in reducing their daily sodium intake. In this research, we determined whether soy sauce odour could induce and enhance salty taste perception in salt solution models. The sensory threshold ...

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Enhancing the photoresponse of electrodeposited WO3 film: Structure and thickness effect

05-Jul-2015 | Author(s): Yun Ok Kim , Seung-Ho Yu , Kwang-Soon Ahn , Sang Kwon Lee , Soon Hyung Kang, Journal of Electroanalytical Chemistry, 2015

Publication date: 1 September 2015 Source:Journal of Electroanalytical Chemistry, Volume 752 Author(s): Yun Ok Kim , Seung-Ho Yu , Kwang-Soon Ahn , Sang Kwon Lee , Soon Hyung Kang Electrodeposited WO3 thin films were prepared on the W, Ti, and Nb metal substrates in strongly acidic ...

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Nanocrystalline titania xerogels doped by metal precursors in the photocatalytic degradation of 2,4-D sodium salts

05-Jul-2015 | Author(s): S. López-Ayala , M.E. Rincón , M.A. Quiroz Alfaro , E.R. Bandala , M.A. Méndez Rojas , V.M Castaño, Journal of Photochemistry and Photobiology A: Chemistry, 2015

Publication date: Available online 2 July 2015 Source:Journal of Photochemistry and Photobiology A: Chemistry Author(s): S. López-Ayala , M.E. Rincón , M.A. Quiroz Alfaro , E.R. Bandala , M.A. Méndez Rojas , V.M Castaño (2,4-dichlorophenoxy) acetic acid (2,4-D) sodium salt can disrupt ...

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Probing the common alkali metals affinity of native and variously methylated [small beta]-cyclodextrins by combining electrospray-tandem mass spectrometry and molecular modeling

01-Jul-2015 | Cédric Przybylski; Véronique Bonnet; Christine Cezard, Physical Chemistry Chemical Physics, 2015

In the study herein, we investigated the solution and gas phase affinity of native and variously methylated β-cyclodextrins (CDs) as hosts towards three common alkali metals as guests namely lithium, sodium and potassium. For this purpose, two complementary approaches have been employed: ...

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Synthesis and characterization of interpenetrating polymer network based on sodium alginate and methacrylic acid and potential application for immobilization of TiO2 nanoparticles

30-Jun-2015 | Marija Lučić Škorić, Nedeljko Milosavljević, Maja Radetić, Zoran Šaponjić, Marija Radoičić, Melina Kalagasidis Krušić, Polymer Engineering and Science, 2015

An interpenetrating polymer network (IPN) based on the sodium alginate (A) and partially neutralized poly(methacrylic acid) (MAA) was prepared by free radical polymerization followed by additional cross‐linking of sodium alginate with calcium ions. Obtained material (A/MAA IPN) was characterized ...

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Photo-Induced Assembly of Nanostructures Triggered by Short-Lived Proton Transfers in the Excited-State

30-Jun-2015 | Carlos Cardenas-Daw; Franziska Gröhn, Journal of the American Chemical Society, 2015

Light stimulation was used to trigger the assembly of nanostructures by directly powering changes at the supramolecular level without incurring net chemical changes at the molecular level. Polyethylene imine, a polybase, was mixed in aqueous solution with sodium 1-naphthol-4-sulfonate, an ...

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Brute-Force Hyperpolarization for NMR and MRI

29-Jun-2015 | Matthew L. Hirsch; Neal Kalechofsky; Avrum Belzer; Melanie Rosay; James G. Kempf, Journal of the American Chemical Society, 2015

Hyperpolarization (HP) of nuclear spins is critical for ultrasensitive nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI). We demonstrate an approach for >1500-fold enhancement of key small-molecule metabolites: 1-13C-pyruvic acid, 1-13C-sodium lactate, and 1-13C-acetic acid. ...

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Ionic liquid and aqueous two‐phase extraction based on salting‐out coupled with high‐performance liquid chromatography for the determination of seven rare ginsenosides in Xue‐Sai‐Tong injection

17-Jun-2015 | Lan‐Jie Li, Yong‐Ri Jin, Xiao‐Zhong Wang, Ying Liu, Qian Wu, Xiao‐Lei Shi, Xu‐Wen Li, Journal of Separation Science, 2015

A method of ionic liquid salt aqueous two‐phase extraction coupled with high‐performance liquid chromatography has been developed for analysis of seven rare ginsenosides including Rg6, F4, 20(S)‐Rg3, 20(R)‐Rg3, Rk3, Rk1 and Rg5 in Xue‐Sai‐Tong injection. The injection was mixed with ionic liquid ...

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