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Novel heterocyclic poly(pyridine‐imide)s with unsymmetric carbazole substituent and noncoplanar structure: High thermal, mechanical and optical transparency, electrochemical, and electrochromic properties

21-11-2014 | Ying‐Chi Huang, Kun‐Li Wang, Wei‐Yi Lee, Yi‐An Liao, Der‐Jang Liaw, Kueir‐Rarn Lee, Juin‐Yih Lai, Journal of Polymer Science Part A: Polymer Chemistry, 2014

ABSTRACT A diamine containing heterocyclic pyridine and unsymmetrical carbazole substituents, 4‐(9‐ethyl‐3‐carbazole)‐2,6‐bis(4‐aminophenyl)pyridine (CBAPP), was prepared for use in the synthesis of poly(pyridine‐imide)s PI‐1–8 by direct polycondensation with dianhydrides in ...

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Soft Processing of Graphene Nanosheets by Glycine‐Bisulfate Ionic‐Complex‐Assisted Electrochemical Exfoliation of Graphite for Reduction Catalysis

20-11-2014 | Kodepelly Sanjeeva Rao, Jaganathan Sentilnathan, Hsun‐Wei Cho, Jih‐Jen Wu, Masahiro Yoshimura, Advanced Functional Materials, 2014

This study demonstrates a mild, environmentally friendly, and cost‐effective soft processing approach for the continuous synthesis of high‐quality, few‐layer graphene nanosheets. This has been achieved via electrochemical exfoliation of graphite, using an environmentally friendly ...

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Determination of Redox Reaction Rates and Orders by In Situ Liquid Cell Electron Microscopy of Pd and Au Solution Growth

19-11-2014 | Eli A. Sutter; Peter W. Sutter, Journal of the American Chemical Society, 2014

In-situ liquid cell transmission and scanning transmission electron microscopy (TEM/STEM) experiments are important, as they provide direct insight into processes in liquids, such as solution growth of nanoparticles, among others. In liquid cell TEM/STEM redox reaction experiments, the hydrated ...

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Electrocatalytic upgrading of model lignin monomers with earth abundant metal electrodes

19-11-2014 | Chun Ho Lam; Christy B. Lowe; Zhenglong Li; Kelsey N. Longe; Jordan T. Rayburn; Michael A. Caldwell; Carly E. Houdek ..., Green Chemistry, 2014

Guaiacol (2-methoxyphenol) and related lignin model monomers undergo electrocatalytic hydrogenolysis/hydrogenation (ECH) to cyclohexanol with RANEY® Nickel electrodes in aqueous solution. Aryl ether (C–O) bond cleavage is followed by reduction of the aromatic ring at ambient pressure and 75 °C. ...

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Sensors, Vol. 14, Pages 21858-21871: A Sub-Clustering Algorithm Based on Spatial Data Correlation for Energy Conservation in Wireless Sensor Networks

18-11-2014 | Tsai, Ming-Hui ; Huang, Yueh-Min, Sensors, 2014

Wireless sensor networks (WSNs) have emerged as a promising solution for various applications due to their low cost and easy deployment. Typically, their limited power capability, i.e., battery powered, make WSNs encounter the challenge of extension of network lifetime. Many hierarchical ...

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Electrocatalytic Upgrading of Model Lignin Monomers with Earth Abundant Metal Electrodes

12-11-2014 | Chun Ho Lam; Christy B. Lowe; Zhenglong Li; Kelsey N Longe; Jordan T Rayburn; Michael A Caldwell; Carly E Houdek; Ja ..., Green Chemistry, 2014

Guaiacol (2-methoxyphenol) and related lignin model monomers undergo electrocatalytic hydrogenolysis/hydrogenation (ECH) to cyclohexanol with Raney-Nickel electrodes in aqueous solution. Aryl ether (C-O) bond cleavage is followed by reduction of the aromatic ring at ambient pressure and 75 °C. ...

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Arsenic Mobility during Flooding of Contaminated Soil: The Effect of Microbial Sulfate Reduction

12-11-2014 | Edward D. Burton; Scott G. Johnston; Benjamin D. Kocar, Environmental Science & Technology, 2014

In floodplain soils, As may be released during flooding-induced soil anoxia, with the degree of mobilization being affected by microbial redox processes such as the reduction of As(V), Fe(III), and SO42–. Microbial SO42– reduction may affect both Fe and As cycling, but the processes involved and ...

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Effects of Anions on the Electrodeposition of Cobalt on Pt(111) Electrode

12-11-2014 | Yenchung Kuo; Weicheng Liao; ShuehLin Yau, Langmuir, 2014

Voltammetry and in-situ scanning tunneling microscopy (STM) were used to examine electrodeposition of cobalt (Co) on a stationary Pt(111) electrode in 0.1 M K2SO4 + 1 mM H2SO4 + 10 mM CoSO4 (or the sulfate solution) without and with 10 mM chloride (the chloride solution). Under- and overpotential ...

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Voltammetric Determination of 2‐Aminofluoren‐9‐one and Investigation of Its Interaction with DNA on a Glassy Carbon Electrode

11-11-2014 | Andrea Hájková, Jiří Barek, Vlastimil Vyskočil, Electroanalysis, 2014

Abstract Voltammetric behavior of the genotoxic environmental pollutant 2‐aminofluoren‐9‐one (2‐AFN) was investigated using direct current voltammetry (DCV) and differential pulse voltammetry (DPV) at a glassy carbon electrode (GCE) in both negative and positive potential regions. For the ...

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Phase Stability and Optoelectronic Properties of the Bixbyite Phase in the Gallium–Indium–Tin–Oxide System

08-11-2014 | Alex Dolgonos, Spencer A. Wells, Kenneth R. Poeppelmeier, Thomas O. Mason, Journal of the American Ceramic Society, 2014

X‐ray diffraction techniques were used to determine the phase boundaries of the In2O3 solid solution phase in the Ga2O3–In2O3–SnO2 ternary system. The effects of Ga and Sn content on the unit cell dimensions of the bixbyite phase were calculated by a linear regression fit, the results of which ...

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