Results 11 to 20 of about 54,515 (323)

Electron-transfer initiated nucleophilic substitution of thiophenolate anion by 1-chloro-substituted 4-(thiazol-2-ylazo)naphthalenes

Electrochemistry Communications, 2020
In this work, the electrochemical transformation of 5-chloro-2-[(4-chloronaphthalen-1-yl)azo]thiazoles (A) into the corresponding radical anion A·− and its subsequent reaction with diphenyldisulfide (PhSSPh) was studied.
Evgenia Dmitrieva, Xiuling Yu, Horst Hartmann   +2 more
doaj   +1 more source

Highly efficient and simultaneous catalytic reduction of multiple toxic dyes and nitrophenols waste water using highly active bimetallic PdO–NiO nanocomposite

Scientific Reports, 2021
Azo dyes and nitrophenols have been widely used in the various industry which are highly toxic and affecting the photosynthetic cycle of aquatic organism. The industry disposals increase the accumulation of azo compounds in the environment.
A. G. Ramu, Dongjin Choi
doaj   +1 more source

A detailed UV–Vis spectral investigation of six azo dyes derived from benzoic- and cinnamic acids: experimental and theoretical insight

Comptes Rendus. Chimie, 2021
Six donor–${\pi }$–acceptor azo dyes, with altered donor- (p-hydroxyphenyl- and naphthalene-2-ol) and carboxylic based acceptor groups, were subjected to detailed solvatochromic and tautomeric investigation in different environments by experimental and ...
Matović, Luka, Lađarević, Jelena, Vitnik, Željko, Vitnik, Vesna, Mijin, Dušan   +4 more
doaj   +1 more source

Synthesis and In Vitro Antimicrobial and Anthelminthic Evaluation of Naphtholic and Phenolic Azo Dyes

Journal of Tropical Medicine, 2020
The antimicrobial activity of 2-naphtholic and phenolic azo compounds was determined against seven microbial species, Staphylococcus aureus (ATCC 25923), Streptococcus pyrogenes (clinical), and Enterococcus faecalis (ATCC 29212), Salmonella typhi ...
Joseph Kwasi Adu, Cedric Dzidzor Kodjo Amengor, Nurudeen Mohammed Ibrahim, Cynthia Amaning-Danquah, Charles Owusu Ansah, Dorcas Dzifa Gbadago, Joseph Sarpong-Agyapong   +6 more
doaj   +1 more source

Synthesis of novel azo compounds containing 5(4H)-oxazolone ring as potent tyrosinase inhibitors [PDF]

, 2013
Six new azo dyes containing of 5(4H)-oxazolone ring were prepared by diazotization of 4-aminohippuric acid and coupling with N,N-dimethylaniline, 1-naphthol and 2-naphthol and condensation with 4-fluoro benzaldehyde or 4-trifluoromethoxy benzaldehyde ...
Abbasalipour, V., Fozooni, S., Hamidian, H., Namjou, M., Tagizadeh, R., Taheri, A.   +5 more
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Synthesis, Characterization and Biological Evaluation of Some Azo and Azo-Schiff Compounds [PDF]

Kirkuk Journal of Science, 2019
This work involves the preparation of some new azo and azo-Schiff compounds derived from benzothiophene, dibenzothiophene, and diamines (1, 5-diaminonaphthalene, and thiocarbohydrazide).
Hadi Azeez, Ahmed Al-kadhimi, Nashwan Tapabashi   +2 more
doaj   +1 more source

Preparation and characterization of bis-[1,3,5]triazinyl diazenes and their utilization as flame retardants in polypropylene films [PDF]

, 2014
A series of bis-[1,3,5]triazinyl diazenes and two metal complexes thereof were synthesized and tested as new flame retardants in polypropylene films. It was observed that electron withdrawing triazinyl ring substituents (i.e.
Aelmans, Aubert, Aubert, Aubert, Chantarasiri, Chen, Chigrinov, Chudgar, Dugave, Duliban, Huang, Huynh, Inoue, Inoue, Kandil, Koopman, Laoutid, Larkin, Li, Lin, Loew, Mikhailov, Milman, Morgan, Morgan, Nicolas, Oxley, Pawelec, Petredis, Ribeiro da Silva, Schartel, Singh, Skinner, Starnes, Tirri, Veen, Wilen, Yamanaka, Zhao, Zhong, Zilker   +40 more
core   +1 more source

Synthesis and Antibacterial Activity of Rhodanine-Based Azo Dyes and Their Use as Spectrophotometric Chemosensor for Fe³⁺ Ions

Chemosensors, 2020
This research includes the design and synthesis of new derivatives for rhodanine azo compounds (4a−c) containing a naphthalene ring. Physiochemical properties of the synthesized compounds were determined by their melting points, FTIR, 1H-NMR, 13C ...
Dana Akram, Ismail A. Elhaty, Shaikha S. AlNeyadi   +2 more
doaj   +1 more source

Supramolecular hierarchy among halogen and hydrogen bond donors in light-induced surface patterning [PDF]

, 2015
Halogen bonding, a noncovalent interaction possessing several unique features compared to the more familiar hydrogen bonding, is emerging as a powerful tool in functional materials design.
Barrett C. J., Cavallo G., Dichiarante V., Forni A., Goulet-Hanssens A., Metrangolo P., Priimagi A., Resnati G., Saccone M., Terraneo G., Vapaavuori J.   +10 more
core   +1 more source

Influence of pH on the Kinetics and Products of Photocatalytic Degradation of Sulfonamides in Aqueous Solutions

Toxics, 2022
The aims of the study were to determine the kinetics of the photocatalytic degradation of six sulfonamides in the presence of TiO2-P25 in acidic, neutral, and alkaline solutions and to identify the structures of the stable products.
Dominika Sapińska, Ewa Adamek, Ewa Masternak, Wioleta Zielińska-Danch, Wojciech Baran   +4 more
doaj   +1 more source