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Highly Stable Anion Exchange Membranes with Internal Cross‐Linking Networks

19-Mar-2015 | Wanxing Xu, Yuyue Zhao, Zhizhang Yuan, Xianfeng Li, Huamin Zhang, Ivo F. J. Vankelecom, Advanced Functional Materials, 2015

Anion exchange membranes (AEMs) with excellent stability and high ion conductivity are fabricated via the formation of internal cross linking networks. The internal crosslinking networks are constructed by reacting 4,4′‐bipyridine with chloromethylated polysulfone. The bipyridine group ...

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Theoretical Study on Structures and Bond Properties of NpO2m+ Ions and NpO2(H2O)nm+ (m = 1–2, n = 1–6) Complexes in the Gas Phase and Aqueous Solution

19-Mar-2015 | Yao-Peng Yin; Chen-Zhong Dong; Xiao-Bin Ding, Journal of Physical Chemistry A, 2015

The equilibrium structures, vibrational frequencies, and bond characteristics of NpO2m+ ions and NpO2(H2O)nm+ (m = 1–2, n = 1–6) complexes have been studied by carrying out ab initio calculations in the gas phase and aqueous solution. The geometries have been obtained at the B3LYP level with the ...

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Formulation of Ionic‐Liquid Electrolyte to Expand the Voltage Window of Supercapacitors

18-Mar-2015 | Katherine L. Van Aken, Majid Beidaghi, Yury Gogotsi, Angewandte Chemie International Edition, 2015

Abstract An effective method to expand the operating potential window (OPW) of electrochemical capacitors based on formulating the ionic‐liquid (IL) electrolytes is reported. Using model electrochemical cells based on two identical onion‐like carbon (OLC) electrodes and two different IL ...

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Development of a sensitive, stable and EGFR‐specific molecular imaging agent for surface enhanced Raman spectroscopy

17-Mar-2015 | Leanne J. Lucas, Claudio Tellez, Maiara L. Castilho, Christopher L. D. Lee, Michael A. Hupman, Lais S. Vieira, Isabe ..., Journal of Raman Spectroscopy, 2015

We created and studied a novel nanoprobe for spectroscopic molecular imaging of the epidermal growth factor (EGF) receptor, whose over‐expression is a hallmark of a wide range of cancers. Silver nanoparticles (AgNPs) of 45 nm diameter were synthesized and coupled to EGF by α‐lipoic acid, a short ...

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Protomers of Benzocaine: Solvent and Permittivity Dependence

17-Mar-2015 | Stephan Warnke; Jongcheol Seo; Jasper Boschmans; Frank Sobott; James H. Scrivens; Christian Bleiholder; Michael T. B ..., Journal of the American Chemical Society, 2015

The immediate environment of a molecule can have a profound influence on its properties. Benzocaine, the ethyl ester of para-aminobenzoic acid that finds an application as a local anesthetic, is found to adopt in its protonated form at least two populations of distinct structures in the gas ...

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Chiroptical Studies on Brevianamide B: Vibrational and Electronic Circular Dichroism Confronted

17-Mar-2015 | Patrick Bultinck; Fanny L. Cherblanc; Matthew J. Fuchter; Wouter A. Herrebout; Ya-Pei Lo; Henry S. Rzepa; Giuliano S ..., The Journal of Organic Chemistry, 2015

Chiroptical spectroscopies, such as electronic circular dichroism (ECD) and vibrational circular dichroism (VCD), are highly sensitive techniques to probe molecular conformation, configuration, solvation, and aggregation. Here we report the application of these techniques to study the fungal ...

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On the Modeling of the Semicontinuous Heterophase Polymerization of Alkyl Methacrylates With Different Water Solubilities

17-Mar-2015 | María G. Pérez García, Abraham G. Alvarado, Lourdes A. Pérez‐Carrillo, Jorge E. Puig, Francisco López‐Serrano, Juan ..., Macromolecular Reaction Engineering, 2015

A generalized model is presented here for the semicontinuous heterophase polymerization of methyl and hexyl methacrylate, which have very different water solubility. In this polymerization technique, neat monomer is fed at a controlled rate over a monomer‐free aqueous solution of surfactant and ...

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Tungsten Carbide Synthesized by Polystyrene Sphere Template Method Promoting Pd Electrocatalyst for Alcohol Oxidation in Alkaline Media

16-Mar-2015 | Z. Yan, Y. Gu, W. Wei, Z. Jiang, J. Xie, P. K. Shen, Fuel Cells, 2015

Abstract Tungsten carbide (WC) particles loading on hollow carbon spheres (HCS) have been synthesized by using ammonium metatungstate as W source, glucose as carbon source, P123 as dispersant and polystyrene sphere as template. The typical WC‐HCS composite has the WC particle sizes of 5–20 nm, ...

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Understanding and tailoring the degradation of PVA‐tyramine hydrogels

16-Mar-2015 | Khoon S. Lim, Justine J. Roberts, Marie‐Helene Alves, Laura A. Poole‐Warren, Penny J. Martens, Journal of Applied Polymer Science, 2015

ABSTRACT We have previously reported on a hydrogel system fabricated from poly(vinyl alcohol) (PVA) functionalized with tyramine groups (PVA‐Tyr) that has the ability to co‐polymerize with proteins in their native state. These gels were also shown to be hydrolytically degradable through the ...

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Deposit structure and kinetic behavior of metal electrodeposition under enhanced gravity-induced convection

15-Mar-2015 | Author(s): Mingyong Wang , Zhi Wang , Zhancheng Guo, Journal of Electroanalytical Chemistry, 2015

Publication date: 1 May 2015 Source:Journal of Electroanalytical Chemistry, Volume 744 Author(s): Mingyong Wang , Zhi Wang , Zhancheng Guo Gravity-induced convection has significant effect on mass transport during metal electrodeposition. The effects of gravity-induced convection on ...

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