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“Off-On” Aggregation-Based Fluorescent Sensor for the Detection of Chloride in Water

04-Mar-2015 | Michelle M. Watt; Jeffrey M Engle; Kurtis C. Fairley; Timothy E Robitshek; Michael M Haley; Darren Johnson, Organic & Biomolecular Chemistry, 2015

Receptors selective for anions in aqueous media are a crucial component in the detection of anions for biological and environmental applications. Recent sensor designs have taken advantage of systems known to aggregate in solution, eliciting a fluorescent response. Herein, we demonstrate a ...


A novel all-solid-state ammonium electrode with polyaniline and copolymer of aniline/2,5-dimethoxyaniline as transducers

01-Mar-2015 | Author(s): Yuanfeng Huang , Jun Li , Tianya Yin , Jianjun Jia , Qian Ding , Hao Zheng , Chen-Tung Arthur Chen ..., Journal of Electroanalytical Chemistry, 2015

Publication date: 15 March 2015 Source:Journal of Electroanalytical Chemistry, Volume 741 Author(s): Yuanfeng Huang , Jun Li , Tianya Yin , Jianjun Jia , Qian Ding , Hao Zheng , Chen-Tung Arthur Chen , Ying Ye From the centre outwards, the novel all-solid-state ammonium ...


Nanometer-sized dynamic entities in an aqueous system

01-Mar-2015 | E. Mamontov; P. Zolnierczuk; M. Ohl, Physical Chemistry Chemical Physics, 2015

Using neutron spin-echo and backscattering spectroscopy, we have found that at low temperatures water molecules in an aqueous solution engage in center-of-mass dynamics that are different from both the main structural relaxations and the well-known localized motions in the transient cages of the ...


The chain conformation and relaxation dynamics of poly(acrylic acid)-graft-poly(ethylene oxide)-graft-dodecyl in water: effect of side-chains and distribution of counterions

01-Mar-2015 | Jingliang Li; Kongshuang Zhao, Physical Chemistry Chemical Physics, 2015

We present a study on the dielectric behavior of an aqueous solution of an amphiphilic copolymer, poly(acrylic acid)-graft-poly(ethylene oxide)-graft-dodecyl (PAA-g-PEO-g-dodecyl), in the frequency range of 40 Hz to 110 MHz at varying concentrations and temperatures. After eliminating the ...


DNA encapsulated chain and wire-like [small beta]-MnO2 organosol for oxidative polymerization of pyrrole to polypyrrole

01-Mar-2015 | Sivasankara Rao Ede; S Anantharaj; U Nithiyanantham; Subrata Kundu, Physical Chemistry Chemical Physics, 2015

DNA encapsulated chain and wire-like β-MnO2 organosol had been synthesized utilizing a two phase water-toluene extraction procedure at room temperature (RT). The β-MnO2 organosol was prepared by transferring KMnO4 and the DNA from aqueous solution separately to the organic (toluene) solvent by ...


Water/Alcohol Soluble Conjugated Polymers for the Interface Engineering of Highly Efficient Polymer Light Emitting Diodes and Polymer Solar Cells

28-Feb-2015 | Zhicheng Hu; Kai Zhang; Fei Huang; Yong Cao, Chemical Communication, 2015

Water/Alcohol soluble conjugated polymers (WSCPs), which can be processed from water/alcohol and other polar solvents, are suitable for solution processing of multi-layer organic electronic devices. By using a thin layer WSCP as the cathode interfacial material, the resulting polymer light ...


Fast and Simple Preparation of Iron‐Based Thin Films as Highly Efficient Water‐Oxidation Catalysts in Neutral Aqueous Solution

27-Feb-2015 | Yizhen Wu, Mingxing Chen, Yongzhen Han, Hongxia Luo, Xiaojun Su, Ming‐Tian Zhang, Xiaohuan Lin, Junliang Sun, Lei Wa ..., Angewandte Chemie International Edition, 2015

Abstract Water oxidation is the key step in natural and artificial photosynthesis for solar‐energy conversion. As this process is thermodynamically unfavorable and is challenging from a kinetic point of view, the development of highly efficient catalysts with low energy cost is a subject of ...


Influence of Sodium Metabisulfite and Citric Acid in Soaking Process after Blanching on Quality and Storage Stability of Dried Chili

27-Feb-2015 | Kwanhathai Chaethong, Rungnaphar Pongsawatmanit, Journal of Food Processing and Preservation, 2015

Abstract Influence of sodium metabisulfite (Na2S2O5) and citric acid in soaking solution was investigated for enhancing dried chili quality. Fresh chili samples were blanched and soaked in nine solutions of Na2S2O5 and citric acid for 30 min before drying at 65C. Soaking with Na2S2O5 and ...


The Origin of the Slow Mode in Dilute Aqueous Solutions of PEO

27-Feb-2015 | Jianqi Wang, Macromolecules, 2015

Besides the fast translational diffusion of individual chains, a slow relaxation mode is frequently observed in dilute poly(ethylene oxide) (PEO) aqueous solutions in dynamic laser light scattering (LLS) experiments, which was attributed to some hydrophobic impurities in PEO or interchain ...


Studies on Residue-Free Decontaminants for Chemical Warfare Agents

27-Feb-2015 | George W. Wagner, Environmental Science & Technology, 2015

Residue-free decontaminants based on hydrogen peroxide, which decomposes to water and oxygen in the environment, are examined as decontaminants for chemical warfare agents (CWA). For the apparent special case of CWA on concrete, H2O2 alone, without any additives, effectively decontaminates ...


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