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823 Newest Publications about the topic bromine

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ROMP‐based boron nitride composites

10-Aug-2017 | Keziban Hüner, Kemal Ulutaş, Hüseyin Deligöz, Lina Sartinska, Tarik Eren, Journal of Applied Polymer Science, 2017

ABSTRACT The present work focuses on the investigation of the thermal and dielectric properties of composites obtained by surface‐modified hexagonal boron nitride (hBN) and ring‐opening metathesis polymerization (ROMP) based polymer. A new kind of high performance composites was developed ...

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Toward a reverse hierarchy of halogen bonding between bromine and iodine

02-Aug-2017 | Emmanuel Aubert; Enrique Espinosa; Irène Nicolas; Olivier Jeannin; Marc Fourmigué, Faraday Discussions, 2017

We compare here the halogen bond characteristics of bimolecular adducts involving either N-bromo- or N-iodosaccharin as strong halogen bond donors, with 4-picoline as a common XB acceptor. In the NBSac·Pic system, the bromine atom of NBSac is displaced toward the picoline, almost at a median ...

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Directing Group Assisted Copper-Mediated Aroylation of Phenols Using 2-Bromoacetophenones

02-Aug-2017 | Swagata Baruah; Somadrita Borthakur; Sanjib Gogoi, Chemical Communication, 2017

A new directing group assisted method for the synthesis of aryl esters is described. In this Cu(II)-mediated reaction, 2-formylphenols and 2-acetylphenols are easily converted to the aryl esters by treatment with a new aroylating agent 2-bromoacetophenone. In addition, a new external bromine free ...

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Tuning the Cavity Size and Chirality of Self-Assembling 3D DNA Crystals

02-Aug-2017 | Chad R. Simmons; Fei Zhang; Tara MacCulloch; Noureddine Fahmi; Nicholas Stephanopoulos; Yan Liu; Nadrian C. Seeman; ..., Journal of the American Chemical Society, 2017

The foundational goal of structural DNA nanotechnology—the field that uses oligonucleotides as a molecular building block for the programmable self-assembly of nanostructured systems—was to use DNA to construct three-dimensional (3D) lattices for solving macromolecular structures. The ...

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Tuning the Cavity Size and Chirality of Self-Assembling 3D DNA Crystals

02-Aug-2017 | Chad R. Simmons; Fei Zhang; Tara MacCulloch; Noureddine Fahmi; Nicholas Stephanopoulos; Yan Liu; Nadrian C. Seeman; ..., Journal of the American Chemical Society, 2017

The foundational goal of structural DNA nanotechnology—the field that uses oligonucleotides as a molecular building block for the programmable self-assembly of nanostructured systems—was to use DNA to construct three-dimensional (3D) lattices for solving macromolecular structures. The ...

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Evaluating brominated thioxanthones as organo‐photocatalysts

13-Jul-2017 | Akila Iyer, Anthony Clay, Steffen Jockusch, J. Sivaguru, Journal of Physical Organic Chemistry, 2017

Abstract Bromination of the widely used triplet sensitizer thioxanthone extends the absorption spectrum into the visible range with only minor loss of lowest triplet state energy (3kcal/mol for di‐bromination). Because of bromine substitution, a slight increase in triplet quantum yield was ...

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Feasibility of microwave-assisted ultraviolet digestion of polymeric waste electrical and electronic equipment for the determination of bromine and metals (Cd, Cr, Hg, Pb and Sb) by ICP-MS

12-Jul-2017 | Gabrielle D. Iop; Sindy R. Krzyzaniak; Jussiane S. Silva; Erico M. M. Flores; Adilson B. Costa; Paola A. Mello, Journal of Analytical Atomic Spectrometry, 2017

A method for the digestion of polymeric waste electrical and electronic equipment (WEEE) by microwave-assisted ultraviolet wet digestion (MAWD-UV) was proposed for the first time allowing us to obtain a single digest for the further determination of Br, Cd, Cr, Hg, Pb and Sb according to the ...

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Fundamentally Addressing Bromine Storage through Reversible Solid-State Confinement in Porous Carbon Electrodes: Design of a High-Performance Dual-Redox Electrochemical Capacitor

11-Jul-2017 | Seung Joon Yoo; Brian Evanko; Xingfeng Wang; Monica Romelczyk; Aidan Taylor; Xiulei Ji; Shannon W. Boettcher; Galen ..., Journal of the American Chemical Society, 2017

Research in electric double-layer capacitors (EDLCs) and rechargeable batteries is converging to target systems that have battery-level energy density and capacitor-level cycling stability and power density. This research direction has been facilitated by the use of redox-active electrolytes that ...

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Do Halogen–Hydrogen Bond Donor Interactions Dominate the Favorable Contribution of Halogens to Ligand–Protein Binding?

11-Jul-2017 | Fang-Yu Lin; Alexander D. MacKerell, Jr., Journal of Physical Chemistry B, 2017

Halogens are present in a significant number of drugs, contributing favorably to ligand–protein binding. Currently, the contribution of halogens, most notably chlorine and bromine, is largely attributed to halogen bonds involving favorable interactions with hydrogen bond acceptors. However, we ...

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Gas Phase Hydration of Halogenated Benzene Cations. Is it Hydrogen or Halogen Bonding?

05-Jul-2017 | Kyle Mason; Adam Pearcy; Isaac K Attah; Sean Platt; Saadullah Aziz; Samy El-Shall, Physical Chemistry Chemical Physics, 2017

Halogen bonding (XB) non-covalent interaction can be observed in compounds containing chlorine, bromine, or iodine which can form directed close contacts of the type R1−X…Y−R2, where the halogen X acts as a Lewis acid and Y can be any electron donor moiety including electron lone pairs on hetero ...

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