ChemInform Abstract: HYDROXYLATION REACTION OF AROMATIC RINGS IN AQUEOUS SOLUTION INDUCED BY HYDROGEN-OXYGEN FLAME

1985 ◽  
Vol 16 (13) ◽  
Author(s):  
M. TAKASAKI ◽  
S. NOMOTO ◽  
K. HARADA
Keyword(s):  
Aqueous Solution ◽  
Aromatic Rings ◽  
Hydroxylation Reaction ◽  
Oxygen Flame

scholarly journals HYDROXYLATION REACTION OF AROMATIC RINGS IN AQUEOUS SOLUTION INDUCED BY HYDROGEN–OXYGEN FLAME

1984 ◽  
Vol 13 (10) ◽  
pp. 1629-1632 ◽  
Author(s):  
Michiaki Takasaki ◽  
Shinya Nomoto ◽  
Kaoru Harada
Keyword(s):  
Aqueous Solution ◽  
Aromatic Rings ◽  
Hydroxylation Reaction ◽  
Oxygen Flame

Preliminary Investigation of the Supply of Chemical Species to an Aqueous Solution Using a Hydrogen−Oxygen Flame

2005 ◽  
Vol 39 (15) ◽  
pp. 5851-5855
Author(s):  
Miho Uchida ◽  
Takahiro Sogabe ◽  
Tadaaki Ikoma ◽  
Akitsugu Okuwaki
Keyword(s):  
Aqueous Solution ◽  
Preliminary Investigation ◽  
Chemical Species ◽  
Oxygen Flame

4,4′,4′′-(1,3,5-Triazine-2,4,6-triyl)tripyridinium trinitrate

2007 ◽  
Vol 63 (3) ◽  
pp. o1344-o1346 ◽  
Author(s):  
Shou-Rong Zhu ◽  
Wan-Dong Chen ◽  
Hong-Jian Zhao ◽  
Min Shao ◽  
Ming-Xing Li
Keyword(s):  
Aqueous Solution ◽  
Nitric Acid ◽  
Title Compound ◽  
Aromatic Rings ◽  
Torsion Angles ◽  
Compound C

Reaction of 2,4,6-tris(4-pyridyl)-1,3,5-triazine (tpt) with excess nitric acid in an aqueous solution affords the title compound, C18H15N6 3+·3NO3 −. The torsion angles between adjacent aromatic rings are much larger than those of neutral tpt. All three pyridine N atoms are protonated.

N.M.R. studies on myelin basic protein. IV. 13C N.M.R. of the peptide encephalitogenic in the guinea pig

1980 ◽  
Vol 33 (11) ◽  
pp. 2411 ◽  
Author(s):  
SA Margetson ◽  
WJ Moore
Keyword(s):  
Aqueous Solution ◽  
Guinea Pig ◽  
Basic Protein ◽  
Relaxation Times ◽  
Lattice Relaxation ◽  
Spin Lattice Relaxation ◽  
Side Chain ◽  
Aromatic Rings ◽  
Ph Titration ◽  
Spin Lattice

The encephalitogenic nonapeptide Phe1-Ser2-Trp3-Gly4-Ala5-Glu6-Gly7-Gln8- Lys9 and its [D-Ala5] analogue have been studied in aqueous solution by 13C n.m.r. spectroscopy. The resonances of all the carbons have been assigned and their pH profiles measured. The expected conformational differences are indicated by only subtle differences in long-range pH titration shifts. The spin-lattice relaxation times T1 of all the protonated carbons of the [L-Ala5] nonapeptide have been measured at 25°C. Analysis of these data in terms of effective correlation times for side-chain mobilities suggests restricted motions for the side chains of Glu6 and Gln8 and the aromatic rings of Phe1 and Trp3.

Dielectric barrier discharge induced degradation of diclofenac in aqueous solution

2013 ◽  
Vol 69 (1) ◽  
pp. 76-83 ◽  
Author(s):  
Shaopeng Rong ◽  
Yabing Sun ◽  
Zehua Zhao ◽  
Huiying Wang
Keyword(s):  
Aqueous Solution ◽  
Dielectric Barrier Discharge ◽  
Advanced Oxidation Processes ◽  
Barrier Discharge ◽  
Ph Value ◽  
Evolutionary Process ◽  
Liquid Chromatography Mass Spectrometry ◽  
Aromatic Rings ◽  
Dielectric Barrier ◽  
Oxidation Processes

A dielectric barrier discharge (DBD) reactor as one of the advanced oxidation processes was applied to the degradation of diclofenac in aqueous solution. The various parameters that affect the degradation of diclofenac and the proposed evolutionary process were investigated. The results indicated that the inner concentrations of 10 mg/L diclofenac can be all removed within 10 min under conditions of 50 W and pH value of 6.15. The existence of Fe2+ in the liquid phase can promote the degradation of diclofenac. But it was rather ineffective in mineralization, because the intermediates containing the aromatic rings were recalcitrant to be degraded. Five intermediates were identified by liquid chromatography-mass spectrometry (LC-MS), the OH · radical and O3 were the major reactive species, and played an important role in the degradation of diclofenac. The toxicity of diclofenac degraded by DBD was assessed and the results indicated the efficiency of the DBD in the detoxification of the diclofenac solution.

scholarly journals Molecular Dynamics of graphene bilayer: in water armchair AB 9x4y turbostratic.

2020 ◽  
Author(s):  
Keli Cristina Barbosa dos Reis ◽  
Anderson Barbosa Lima ◽  
Roberto Ribeiro Faria ◽  
Lourival Rodrigues de Souza ◽  
Victor de Sousa Batista ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Aqueous Solution ◽  
Hydrophobic Interactions ◽  
Aromatic Rings ◽  
Graphene Bilayer ◽  
Rotational Angle ◽  
Carbon Chains ◽  
Molecular Behavior ◽  
Carboxylic Groups ◽  
Conformational Freedom

Graphene forms armchair or zigzag bilayers with AA or AB lined sheets, which differ its properties. This work present a Molecular dynamics study of a graphene bilayer model developed to understand the way of its interactions in aqueous solution, including SDS and LAS surfactants. Structures of 9x and 4y aromatic rings shows a turbostratic stacking with 3,33Å between the sheets. This structure as stable in water and attract the surfactants with sp3 carbon chains, with hydrophobic interactions and carboxylic groups at the edges. It exhibits stable behavior from room temperature to 368K, with a rotational angle of 20Å between the leaves, demonstrating a turbostratic alignment. The adhered surfactants are aligned horizontally, following the movement of the bilayer. They present altered conformational freedom, with the polar portion out of the plane, near to the edges. The reproducibility of experimental intermolecular interactions with hydrophobic portions of the surfactants was also obtained, maintaining a trajectory with turbostratic angulation between the leaves. The predicted molecular behavior of graphene bilayer in aqueous solution contributes to the planning of graphene-based materials.

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