Results 81 to 90 of about 54,515 (323)

Synthesis, characterization and biological investigations of potentially bioactive heterocyclic compounds containing 4-hydroxy coumarin

Heliyon, 2020
In this paper, we have reported the synthesis of a series of heterocyclic azo dyes containing 4-hydroxy coumarin by diazo-coupling reaction. The structural aspect of the newly synthesized compounds was accomplished by various physico-chemical techniques ...
O. Nagaraja, Yadav D. Bodke, Itte Pushpavathi, S. Ravi Kumar   +3 more
doaj   +1 more source

Catalytic Ozonation of Phenolic Wastewater: Identification and Toxicity of Intermediates [PDF]

, 2014
A new strategy in catalytic ozonation removal method for degradation and detoxification of phenol from industrial wastewater was investigated. Magnetic carbon nanocomposite, as a novel catalyst, was synthesized and then used in the catalytic ozonation ...
Farzadkia, M., Gholami, M., Mahvi, A.H., Nasseri, S., Shahamat, Y.D, Shahryari, A.   +5 more
core   +3 more sources

Influence of Metal Oxide Interface Layers on the Thermochromic Properties of VO2 Thin Films Deposited by Magnetron Sputtering

Advanced Materials Interfaces, EarlyView.
This study investigates the thermochromic properties of VO2 deposited on aluminum doped zinc oxide precoated fused silica with Al2O3, TiO2, and WO3 as interface layers. The results indicate that the metal‐to‐insulator transition is highly influenced by the grains formed at the interface.
Eduard Llorens Balada, Eugen Stamate
wiley   +1 more source

Synthesis Development and Molecular Docking Study of New Azo Chalcone Derivatives

ARO-The Scientific Journal of Koya University
This work is divided into two main parts. The first part involves the synthesis of new azo chalcone compounds through a two-step process. Initially, azo compounds are synthesized by diazotizing 3-nitroaniline, followed by a coupling reaction with 4 ...
Myasar Kh. Ibrahim, Shireen R. Mohammed
doaj   +1 more source

New AZO Compounds Derivatives Based on 4- chloro-2-((5-formyl-2-hydroxy-3-methoxyphenyl) diazenyl)benzenesulfonamide: Preparation, diagnostic, Spectroscopic, Antioxidant and Antimicrobial efficiency [PDF]

Journal of Bioscience and Applied Research
In this study, two series of compounds have been prepared based on azo compound 4-chloro-2-((5-formyl-2-hydroxy-3-methoxyphenyl)iazinyl) benzene sulfonamide (A1) which prepared by diazotization of 2-amino-4-chlorobenzen sulfonamide and 4-hydroxy -3 ...
Dania Saleh, Bushra Al-Salami
doaj   +1 more source

Indirect determination of dopamine and paracetamol by electrochemical impedance spectroscopy using azo coupling reaction with oxidized 2,4-dinitrophenylhydrazine (DNPH): Application in commercial tablets

Journal of Science: Advanced Materials and Devices, 2020
A new method for the determination of dopamine (DA) and paracetamol (PCT), based on the azo “coupling reaction with oxidized 2,4-dinitrophenylhydrazine (DNPH), has been established.
W. Boumya, M. Achak, M. Bakasse, M.A. El Mhammedi   +3 more
doaj   +1 more source

Isomerization Mechanism in Hydrazone-Based Rotary Switches: Lateral Shift, Rotation, or Tautomerization? [PDF]

, 2011
Two intramolecularly hydrogen-bonded arylhydrazone (aryl = phenyl or naphthyl) molecular switches have been synthesized, and their full and reversible switching between the E and Z configurations have been demonstrated.
Aprahamian, Ivan, Benítez, Diego, Elhabiri, Mourad, Goddard, William A., III, Lafranchi, Don Antoine, Landge, Shainaz M., Tkatchouk, Ekaterina   +6 more
core   +1 more source

Azo-azulene derivatives for nonlinear optical applications [PDF]

, 2008
Organic materials are of high interest and are widely used for the development of new powerful and low dimensional technologies. They exhibit several advantages with respect to inorganic compounds such as large cubic and quadratic optical nonlinearities,
A. Meghea, B. Sahraoui, E.M. Ungureanu, K. Bouchouit, Z. Essaidi   +4 more
core   +3 more sources

Light Switchable Ionic Conductivity of Arylazopyrazole Modified Polysiloxanes

Advanced Materials Technologies, EarlyView.
We present a polysiloxane functionalized with a novel arylazopyrazole dye that undergoes reversible photoisomerization. Upon lithium bis(trifluoromethanesulfonyl)imide addition and UV irradiation, the polymer exhibits a shift in tan(d) toward higher frequencies and enhanced ionic conductivity.
Malte S. Beccard, Thulasinath Raman Venkatesan, Michael Bauer, Valentin Razvan Lupu, Philipp Scheidegger, Francesco Taddei, Frank A. Nüesch, Dorina M. Opris   +7 more
wiley   +1 more source

Design and Structural Characterization of Novel Azo-Theophylline as Acid-Base Indicator

Ibn Al-Haitham Journal for Pure and Applied Sciences
     Novel heterocyclic acid-base indicators 8-[3-(phenol)azo] theophylline (PAT) and 8[1-(6-sulfonic acid naphthalene) azo] theophylline (SAT) were synthesized through the reaction between m-amino phenol and 1-amino naphthalene -6-sulfonic acid with ...
Mohnned hamady Manulla, Alyaa Khidir Abbas   +1 more
doaj   +1 more source