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A hydrogen bonded molecular capsule versus a 3D network of tripodal organopolysilanols

26-Aug-2015 | Marina Fukawa; Takayuki Sato; Yoshio Kabe, Chemical Communication, 2015

1,3,5-Triethylbenzene based tripodal trisilanols were synthesized. The X-ray crystal structures of trisilanols showed capsule formation as well as non-capsular network formation using silanol hydrogen bonds. The 1H NMR and ESI-mass spectroscopy experiments for solution state binding supported ...

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Non‐noble metal graphene oxide‐copper (II) ions hybrid electrodes for electrocatalytic hydrogen evolution reaction

25-Aug-2015 | S. Muralikrishna, T.N. Ravishankar, T. Ramakrishnappa, D.H. Nagaraju, Ranjith Krishna Pai, Environmental Progress, 2015

Non‐noble metal and inexpensive graphene oxide‐copper (II) ions (GO‐Cu2+) hybrid catalysts have been explored for the hydrogen evolution reaction (HER). We were able to tune the binding abilities of GO toward the Cu2+ ions and hence their catalytic properties by altering the pH. We have utilized ...

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Chiral Cyclobutane β-Amino Acid-Based Amphiphiles: Influence of Cis/Trans Stereochemistry on Solution Self-Aggregation and Recognition

21-Aug-2015 | Alessandro Sorrenti; Ona Illa; Ramon Pons; Rosa M. Ortuño, Langmuir, 2015

Novel diastereomeric anionic amphiphiles based on the rigid cyclobutane β-amino acid scaffold have been synthesized and deeply investigated with the aim of generating new functional supramolecular architectures on the basis of the rational design of original amphiphilic molecules and the control ...

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Computational screening of renewably sourced polyalkylene glycol plasticizers for nylon polyamides

18-Aug-2015 | Jarod M. Younker, Raja H. Poladi, Herbert V. Bendler, Hari B. Sunkara, Polymers for Advanced Technologies, 2015

A high‐throughput computational method is used to screen new plasticizers for nylon polyamides. Condensed‐phase molecular dynamic simulations are used to describe the interaction of the plasticizer and the polymer. A radial distribution function is utilized to quantify the degree of hydrogen ...

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Conformational Analysis of Large and Highly Disulfide-Stabilized Proteins by Integrating Online Electrochemical Reduction into an Optimized H/D Exchange Mass Spectrometry Workflow

18-Aug-2015 | Esben Trabjerg; Rasmus U. Jakobsen; Simon Mysling; Søren Christensen; Thomas J. D. Jørgensen; Kasper D. Rand, Analytical Chemistry, 2015

Analysis of disulfide-bonded proteins by hydrogen/deuterium exchange mass spectrometry (HDX-MS) requires effective and rapid reduction of disulfide bonds before enzymatic digestion in order to increase sequence coverage. In a conventional HDX-MS workflow, disulfide bonds are reduced chemically by ...

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Speciation of the Potential Antitumor Agent Vanadocene Dichloride in the Blood Plasma and Model Systems

17-Aug-2015 | Daniele Sanna; Valeria Ugone; Giovanni Micera; Tiziana Pivetta; Elisa Valletta; Eugenio Garribba, Inorganic Chemistry, 2015

The speciation of the potential antitumor agent vanadocene dichloride ([Cp2VCl2], abbreviated with VDC) in the blood plasma was studied by instrumental (EPR, ESI-MS, MS-MS, and electronic absorption spectroscopy) and computational (DFT) methods. The behavior of VDC at pH 7.4 in aqueous solution, ...

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Electrocatalysis of hydrogen evolution on polycrystalline palladium by rhodium nanoislands in alkaline solution

16-Aug-2015 | Author(s): Svetlana Štrbac, Milutin Smiljanić, Zlatko Rakočević, Journal of Electroanalytical Chemistry, 2015

Publication date: 15 October 2015 Source:Journal of Electroanalytical Chemistry, Volume 755 Author(s): Svetlana Štrbac, Milutin Smiljanić, Zlatko Rakočević Hydrogen evolution reaction (HER) was investigated on bimetallic Rh/Pd(poly) electrodes in alkaline solution. Bimetallic ...

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Nitrogen-Doping Induced Self-Assembly of Graphene Nanoribbon-Based Two-Dimensional and Three-Dimensional Metamaterials

14-Aug-2015 | Timothy H. Vo; U. Gayani E. Perera; Mikhail Shekhirev; Mohammad Mehdi Pour; Donna A. Kunkel; Haidong Lu; Alexei Gruv ..., Nano Letters, 2015

Narrow graphene nanoribbons (GNRs) constructed by atomically precise bottom-up synthesis from molecular precursors have attracted significant interest as promising materials for nanoelectronics. But there has been little awareness of the potential of GNRs to serve as nanoscale building blocks of ...

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pH‐Responsive Round‐Way Motions of a Smart Device through Integrating Two Types of Chemical Actuators in One Smart System

13-Aug-2015 | Lingling Yu, Mengjiao Cheng, Mengmeng Song, Dequn Zhang, Meng Xiao, Feng Shi, Advanced Functional Materials, 2015

Smart motions of objects from the submicrometer to millimeter scale through chemical control with stimulus‐responsive way are significant to achieve various applications. However, the intelligence of the current devices with chemical responding system remains to be improved; especially, ...

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SnIV Metalloporphyrin/CoIII Complex: An All-Abundant-Element System for the Photocatalytic Production of H2 in Aqueous Solution

13-Aug-2015 | Luise Mintrop; Johannes Windisch; Carla Gotzmann; Roger Alberto; Benjamin Probst; Philipp Kurz, Journal of Physical Chemistry B, 2015

A new, molecular system for the light-driven production of hydrogen in aqueous solution was developed by combining a water-soluble tin porphyrin ([SnIVCl2TPPC], A) acting as photosensitizer with a cobalt-based proton-reduction catalyst ([CoIIICl(dmgH)2(py)], C). Under visible light illumination ...

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