Results 11 to 20 of about 38,310 (254)

Synthetic utility of 5-amino-6-cyano-2-phenylthieno[2,3-d] oxazole [PDF]

open access: yesJournal of the Serbian Chemical Society, 2005
This paper describes the synthesis of 5-amino-6-cyano-2-phenylthieno[ 2,3-d]oxazole and its utilization for the preparation of a range of azo disperse dyes.
Kanetkar V.R., Walavalkar R.R.
doaj   +3 more sources

A spectroscopic study for the pH-effect on the thermodynamics of formation for colored Azo-dyes prepared from the reaction of paracetamol with two diazotized reagents [PDF]

open access: yesمجلة التربية والعلم, 2023
This research included a spectroscopic study of the effect of the pH function on the thermodynamics of the formation of the two colored Azo-dyes prepared from the interaction of paracetamol with two different diazotized reagents at three acidic media ...
Ammar Y. Hashim   +1 more
doaj   +1 more source

Improvement of analytical method for three azo dyes in processed milk and cheese using HPLC-PDA

open access: yesFood Chemistry: X, 2023
This study aims to develop and validate a method for simultaneously measuring three azo dyes (azorubine, brilliant black BN, lithol rubine BK) not designated in Korea.
Se-Jeong Lee   +5 more
doaj   +1 more source

Azo-hydrazone tautomerism of aryl azo pyridone dyes [PDF]

open access: yesHemijska Industrija, 2013
In the last three or four decades disperse dyes derived from pyridones (in particular azo pyridone dyes) have gained in importance, and are widely used in various fields.
Mirković Jelena M.   +3 more
doaj   +1 more source

Biodegradation of azo dyes by bacterial or fungal consortium and identification of the biodegradation products

open access: yesEgyptian Journal of Aquatic Research, 2021
Fifteen azo dyes were subjected to microbial degradation by four fungal strains and their mixtures as well as five bacterial strains and their mixtures. The biodegradation efficiency was determined by LC/MS/MS analysis.
Wafaa M. Abd El-Rahim   +3 more
doaj   +1 more source

Azo‐Dye Rotaxanes

open access: yesAngewandte Chemie International Edition in English, 1997
The hydrophobic effect was used to assemble encapsulated azo dyes such as 1 in water. The dumbbell-shaped dyes were synthesized inside α-cyclodextrin, β-cyclodextrin, or a cyclophane to yield stable rotaxanes.
Anderson, S, Claridge, T, Anderson, H
openaire   +1 more source

Visible-light degradation of azo dyes by imine-linked covalent organic frameworks

open access: yesGreen Energy & Environment, 2023
Covalent organic frameworks (COFs) are nanoporous crystalline polymers with densely conjugated structures. This work discovers that imine-linked COFs exhibit remarkable photodegradation efficiency to azo dyes dissolved in water.
Hongbo Xue, Sen Xiong, Kai Mi, Yong Wang
doaj   +1 more source

Formation of a carcinogenic aromatic amine from an azo dye by human skin bacteria in vitro [PDF]

open access: yes, 1999
Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG geförderten) Allianz- bzw. Nationallizenz frei zugänglich.This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence
Baltes, W.   +4 more
core   +1 more source

Enhancement of the photochromic switching speed of bithiophene azo dyes [PDF]

open access: yes, 2012
A series of heteroaryl substituted bithiophene azo dyes in solution were irradiated with visible light to promote the azo E–Z isomerization and then the kinetics of the thermal Z–E back reaction was studied.
Castro, M. Cidália R.   +4 more
core   +1 more source

Application of systematic evidence mapping to identify available data on the potential human health hazards of selected market-relevant azo dyes

open access: yesEnvironment International, 2023
Background: Azo dyes are used in textiles and leather clothing. Human exposure can occur from wearing textiles containing azo dyes. Since the body’s enzymes and microbiome can cleave azo dyes, potentially resulting in mutagenic or carcinogenic ...
Channa Keshava   +14 more
doaj   +1 more source

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