Nickel Derivatives of Azo Dyes

1952 ◽  
Vol 44 (5) ◽  
pp. 1017-1023 ◽  
Author(s):  
Neil M. Mackenzie ◽  
Henry E. Millson ◽  
Byron L. West
Keyword(s):  
Azo Dyes ◽  
Derivatives Of

scholarly journals Synthesis of azo polymers by etheric derivatives polymerization of allyl bromide and studying their bandgap and determine some of their properties: اصطناع بوليميرات آزو ببلمرة مشتاقات إيتيرية لبروميد الآليل ودراسة فجوتها الطاقية وتعيين بعض خصائصها الفيزيائية

2021 ◽  
Vol 5 (4) ◽  
pp. 155-142
Author(s):  
Ghazi Mahmoud Hasso Jawish, Rushdi Madwar, Francois Kara Bet Ghazi Mahmoud Hasso Jawish, Rushdi Madwar, Francois Kara Bet
Keyword(s):  
Refractive Index ◽  
Thermal Properties ◽  
Azo Dyes ◽  
Kinematic Viscosity ◽  
Allyl Bromide ◽  
Bandgap Energy ◽  
Azo Polymers ◽  
Ft Ir ◽  
Derivatives Of

In this research, two ether derivatives of phenolic azo dyes were synthesized via Williamson's reaction according to the SN2 mechanism. The prepared compounds were radically polymerized using (AIBN) as an initiator and their structures were identified by FT-IR and 1H-NMR. Furthermore, thermal properties of these polymers was made by (DSC). Bandgap energy have been calculated to indicate the ability of these polymers as optical semiconductors, it was 2.8ev, 2.4ev for P(AO2) and P(AON1) respectively. Beside the determination of refractive index, kinematic viscosity, density, and degree of Turbidity.

Synthesis of some new heterocyclic azo dyes derived from 2-amino-3-cyano4.6-diarylpyridines and investigation of its absorption spectra and stability using the DFT

2020 ◽  
Vol 17 ◽  
Author(s):  
El-sayed M Abdelrehim
Keyword(s):  
Absorption Spectra ◽  
Elemental Analysis ◽  
Azo Dyes ◽  
Absorption Maximum ◽  
Density Functional ◽  
Energy Gap ◽  
Functional Theory ◽  
Mass Spectral ◽  
Chemical Reagents ◽  
Derivatives Of

Introduction: In continuation of our interest of 2-amino-3-cyano-4.6-diarylpyridines reactions in various fields of organic chemistry where we have previously used it in synthesis of many heterocyclic compounds [18-21] and where dyes generally have many applications especially when replacement of benzene or anthraquinone azo dyes with heterocyclic azo dyes so new derivatives of heterocyclic azo dyes derived from 2-amino-3-cyano-4.6-diarylpyridines were prepared. Materials and Methods: The IR spectra (KBr), NMR, elemental microanalyses and mass spectra spectrum, were performed at different faculties of science in Egypt. Absorption spectra were recorded on Unicam SP 750 in DMF and acetone using 1x 10-5 mol l-1 of dye concentration. Optimization was performed using density functional theory (DFT) and time dependent-DFT by applying Becke’s three-parameter hybrid exchange functional with Lee–Yang–Parr gradient-corrected correlation (B3LYP functional). The chemical reagents used in synthesis were purchased from Fluka, Sigma and Aldrich. Result and Discussions: The structure of the preparing Heterocyclic azo dyes is proved using spectroscopic tools and elemental analysis, and investigation of its absorption spectra indicates the effect of both solvent and substituent on absorption maximum. DFT calculations were performed on some the selected dyes. Conclusion: Structures of newly synthesized heterocyclic azo dyes were confirmed using elemental analysis, IR, 1H-NMR, 13CNMR and mass spectral data. DFT theory was used in explaining the electronic properties of the some selected dyes, where the energy gap can help in understanding the reactivity behaviour and stability of these compounds. Absorption spectra indicate the effect of both solvent and substituent on absorption maximum.

Molecular dynamics of derivatives of cyclomalto-oligosaccharides and their complexes with azo dyes

1989 ◽  
Vol 192 ◽  
pp. 61-68 ◽  
Author(s):  
Miyoko Suzuki ◽  
Jozsef Szejtli ◽  
Lajos Szente
Keyword(s):  
Molecular Dynamics ◽  
Azo Dyes ◽  
Derivatives Of

ChemInform Abstract: Synthesis of Carboxylic Acid Derivatives of Aminocyanopyrazoles: Useful Precursors for a New Class of Fibre-Reactive Azo Dyes.

ChemInform ◽  
2010 ◽  
Vol 26 (37) ◽  
pp. no-no
Author(s):  
J. C. V. P. MOURA ◽  
A. M. F. OLIVEIRA-CAMPOS ◽  
J. GRIFFITHS ◽  
H. L. S. MAIA ◽  
J. I. N. R. GOMES
Keyword(s):  
Carboxylic Acid ◽  
Azo Dyes ◽  
New Class ◽  
Derivatives Of ◽  
Reactive Azo Dyes
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