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Electrochemical Raman spectroscopy of carbon nanotube energy transfer complexes

24-10-2014 | Benjamin Hatting, Friederike Ernst, Stephanie Reich, physica status solidi (b), 2014

We present electrochemical Raman measurements on energy transfer complexes formed by combining single‐walled carbon nanotubes and dye molecules. The presence of the dye molecules in the proximity of the nanotubes impacts the nanotubes’ charging behavior, leading to changes in the position of ...

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Wireless Electrosampling of Heavy Metals for Stripping Analysis with Bismuth-Based Janus Particles

24-10-2014 | Hanna Sopha; Jérome Roche; Ivan Švancara; Alexander Kuhn, Analytical Chemistry, 2014

In this contribution, a wireless method for the electrolytic sampling of heavy metals at special bismuth-modified particles is presented. For the first time, glassy carbon beads were asymmetrically modified with bismuth using bipolar electrochemistry. The resulting chemically asymmetric beads, ...

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Xenon(IV)–Carbon Bond of [C6F5XeF2]+; Structural Characterization and Bonding of [C6F5XeF2][BF4], [C6F5XeF2][BF4]·2HF, and [C6F5XeF2][BF4]·nNCCH 3 (n = 1, 2); and the Fluorinating Properties of [C6F5XeF2][BF4]

20-10-2014 | Karsten Koppe; Jamie Haner; Hélène P. A. Mercier; Hermann-J. Frohn; Gary J. Schrobilgen, Inorganic Chemistry, 2014

The [C6F5XeF2]+ cation is the only example of a XeIV–C bond, which had only been previously characterized as its [BF4]− salt in solution by multi-NMR spectroscopy. The [BF4]− salt and its new CH3CN and HF solvates, [C6F5XeF2][BF4]·1.5CH3CN and [C6F5XeF2][BF4]·2HF, have now been synthesized and ...

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Electrical conductivity and tensile properties of block‐copolymer‐wrapped single‐walled carbon nanotube/poly(methyl methacrylate) composites

18-10-2014 | Alejandro Ansón‐Casaos, F. Javier Pascual, Cristina Ruano, Natalia Fernández‐Huerta, Isaías Fernández‐Pato, Juan C. ..., Journal of Applied Polymer Science, 2014

ABSTRACT Poly(methyl methacrylate) (PMMA) composites containing raw or purified single‐walled carbon nanotubes (SWCNTs) are prepared by in situ polymerization and solution processing. The SWCNTs are purified by centrifugation in a Pluronic surfactant, which consists of polyethyleneoxide and ...

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Electrochemical Behavior of Nicotine at Unmodified Carbon Paste Electrode and Its Determination in a Set of Refilling Liquids for Electronic Cigarettes

16-10-2014 | Matěj Stočes, Ivan Švancara, Electroanalysis, 2014

Abstract In this manuscript, a carbon paste electrode (CPE) from traditional components has been used to study the electrochemical oxidation of nicotine and its feasibility to be performed at unmodified and otherwise untreated carbon paste in an effort to propose a simple voltammetric method ...

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A Molecular Copper Catalyst for Electrochemical Water Reduction with a Large Hydrogen‐Generation Rate Constant in Aqueous Solution

14-10-2014 | Peili Zhang, Mei Wang, Yong Yang, Tianyi Yao, Licheng Sun, Angewandte Chemie International Edition, 2014

Abstract The copper complex [(bztpen)Cu](BF4)2 (bztpen=N‐benzyl‐N,N′,N′‐tris(pyridin‐2‐ylmethyl)ethylenediamine) displays high catalytic activity for electrochemical proton reduction in acidic aqueous solutions, with a calculated hydrogen‐generation rate constant (kobs) of over 10000 s−1. A ...

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Dilithium Hexaorganostannate(IV) Compounds

14-10-2014 | Ireen Schrader, Kornelia Zeckert, Stefan Zahn, Angewandte Chemie International Edition, 2014

Abstract Hypercoordination of main‐group elements such as the heavier Group 14 elements (silicon, germanium, tin, and lead) usually requires strong electron‐withdrawing ligands and/or donating groups. Herein, we present the synthesis and characterization of two hexaaryltin(IV) dianions in form ...

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Cost‐Effective Synthesis of Amine‐Tethered Porous Materials for Carbon Capture

14-10-2014 | Weigang Lu, Mathieu Bosch, Daqiang Yuan, Hong‐Cai Zhou, ChemSusChem, 2014

Abstract A truly cost‐effective strategy for the synthesis of amine‐tethered porous polymer networks (PPNs) has been developed. A network containing diethylenetriamine (PPN‐125‐DETA) exhibits a high working capacity comparable to current state‐of‐art technology (30 % monoethanolamine ...

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Immunoassay for carcinoembryonic antigen based on the Zn2+-enhanced fluorescence of magnetic-fluorescent nanocomposites

13-10-2014 | Author(s): Kaiqing Wu , Chengchao Chu , Chao Ma , Hongmei Yang , Mei Yan , Shenguang Ge , Jinghua Yu , Xianra ..., Sensors and Actuators B: Chemical, 2014

Publication date: January 2015 Source:Sensors and Actuators B: Chemical, Volume 206 Author(s): Kaiqing Wu , Chengchao Chu , Chao Ma , Hongmei Yang , Mei Yan , Shenguang Ge , Jinghua Yu , Xianrang Song Carbon coated magnetic composite nanoparticles (Fe3O4@C) were prepared and further ...

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Thin-film composite membranes for organophilic nanofiltration based on photo-cross-linkable polyimide

12-10-2014 | Author(s): Sven Behnke , Mathias Ulbricht, Reactive and Functional Polymers, 2014

Publication date: Available online 8 October 2014 Source:Reactive and Functional Polymers Author(s): Sven Behnke , Mathias Ulbricht This work demonstrates that it is possible to prepare new, competitive thin-film composite (TFC) membranes with a polyolefin ultrafiltration membrane as ...

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