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545 Newest Publications about the topic bromine

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Fabrication of Two-Component, Brush-on-Brush Topographical Microstructures by Combination of Atom-Transfer Radical Polymerization with Polymer End-Functionalization and Photopatterning

18-May-2015 | Paul Chapman; Robert E. Ducker; Claire R. Hurley; Jamie K. Hobbs; Graham J. Leggett, Langmuir, 2015

Poly(oligoethylene glycol methyl ether methacrylate) (POEGMEMA) brushes, grown from silicon oxide surfaces by surface-initiated atom transfer radical polymerization (SI-ATRP), were end-capped by reaction with sodium azide leading to effective termination of polymerization. Reduction of the ...

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Regioselective Suzuki couplings of non-symmetric dibromobenzenes: alkenes as regiochemical control elements

13-May-2015 | Peng Zhao; Marshall D. Young; Christopher M. Beaudry, Organic & Biomolecular Chemistry, 2015

The regiochemical outcome of Suzuki couplings of non-symmetric dibromobenzenes is investigated. Selectivities are dependent on the proximity of the bromine atom to alkene substituents, not on steric or electronic effects. Extension to a one-pot three-component Suzuki reaction leads to efficient ...

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Graphene Nanoplatelets with Selectively Functionalized Edges as Electrode Material for Electrochemical Energy Storage

13-May-2015 | Dhrubajyoti Bhattacharjya; In-Yup Jeon; Hyean-Yeol Park; Tandra Panja; Jong-Beom Baek; Jong-Sung Yu, Langmuir, 2015

In recent years, graphene-based materials have been in the forefront as electrode material for electrochemical energy generation and storage. Despite this prevalent interest, synthesis procedures have not attained three important efficiency requirements, that is, cost, energy, and ...

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Light-Induced Regiospecific Bromination of meso-Tetra(3,5-di-tert-butylphenyl)Porphyrin on 2,12 β-Pyrrolic Positions

29-Apr-2015 | Gabriele Di Carlo; Alessio Orbelli Biroli; Francesca Tessore; Silvia Rizzato; Alessandra Forni; Giulia Magnano; Madd ..., The Journal of Organic Chemistry, 2015

The antipodal introduction of two bromine atoms on the 2,12 β-pyrrolic position of 5,10,15,20-tetra(3,5-di-tert-butylphenyl)porphyrin was successfully achieved by a light-induced reaction of the substrate with excess NBS. Complexation with NiII of the major regioisomer led to good quality ...

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ChemInform Abstract: Visible‐Light‐Induced Bromoetherification of Alkenols for the Synthesis of β‐Bromotetrahydrofurans and ‐tetrahydropyrans

27-Apr-2015 | Run Lin, Hongnan Sun, Chao Yang, Youdong Yang, Xinxin Zhao, Wujiong Xia, ChemInform, 2015

Abstract using CBr4 as bromine source

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Surface etching of CZTS absorber layer by Br‐related solution

21-Apr-2015 | H. Miyazaki, M. Aono, H. Kishimura, H. Katagiri, physica status solidi (c), 2015

Abstract Cu2ZnSnS4 (CZTS) material has many advantages for high‐efficiency thin‐film solar cell absorber layer. A detailed study of the surface of the CZTS and the hetero‐interface of the CZTS/buffer layer is important to improve the conversion efficiency of CZTS thin film solar cells. We ...

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Transient Chemical Oscillations in the 4‐(N,N‐Dimethylamino) Benzoic Acid–Bromate Reaction

16-Apr-2015 | Jeffrey G. Bell, Jichang Wang, International Journal of Chemical Kinetics, 2015

ABSTRACT The bromination and oxidation of 4‐(N,N‐dimethylamino) benzoic acid (DMABA) by acidic bromate was investigated in a batch reactor through following their redox potential and UV/vis absorption spectra, in which transient oscillations with a long induction time were observed. Different ...

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Mechanistic Studies of Copper(I)-Catalyzed 1,3-Halogen Migration

16-Apr-2015 | Ryan Van Hoveln; Brandi M. Hudson; Henry B. Wedler; Desiree M. Bates; Gabriel Le Gros; Dean J. Tantillo; Jennifer M. ..., Journal of the American Chemical Society, 2015

An ongoing challenge in modern catalysis is to identify and understand new modes of reactivity promoted by earth-abundant and inexpensive first-row transition metals. Herein, we report a mechanistic study of an unusual copper(I)-catalyzed 1,3-migration of 2-bromostyrenes that reincorporates the ...

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Hypobromous acid, a powerful endogenous electrophile: Experimental and theoretical studies

12-Apr-2015 | Author(s): Valdecir Farias Ximenes , Nelson Henrique Morgon , Aguinaldo Robinson de Souza, Journal of Inorganic Biochemistry, 2015

Publication date: May 2015 Source:Journal of Inorganic Biochemistry, Volume 146 Author(s): Valdecir Farias Ximenes , Nelson Henrique Morgon , Aguinaldo Robinson de Souza Hypobromous acid (HOBr) is an inorganic acid produced by the oxidation of the bromide anion (Br−). The blood plasma ...

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Photocatalytic Oxidative Heterocyclization of Semicarbazones: An Efficient Approach for the Synthesis of 1,3,4-Oxadiazoles

10-Apr-2015 | Ritu Kapoorr; Sachchida N. Singh; Shubhangi Tripathi; Lal Dhar S. Yadav, Synlett, 2015

SynlettDOI: 10.1055/s-0034-1380493 A highly efficient eosin Y catalyzed oxidative heterocyclization of semicarbazones was established under visible-light photoredox catalysis using CBr4 as a bromine source. The protocol renders a rapid, mild, and efficient access to valuable 5-substituted ...

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