13071-14-2Relevant academic research and scientific papers
Thermal properties, geometrical structures, antimicrobial activity and DNA binding of supramolecular azo dye complexes
El-Sonbati,Diab,El-Bindary,Shoair,Beshry
, p. 400 - 420 (2016)
Ru(III) complexes of 5-(4-derivative phenyl azo)-8-hydroxyquinoline (HLn) are prepared and characterized by elemental analyses, IR, UV-Visible spectra, 1H and 13C NMR spectra, mass spectra, X-ray diffraction analysis, conductivity measurements and magnetic susceptibility measurements as well as thermal analysis. The XRD patterns show that the ligand (HL3) has a polycrystalline nature and complex (2) is completely amorphous. The ligands act as a monobasic bidentate coordinating through CN and OH groups by replacement of a proton from the latter group. The molar conductivities show that the Ru(III) complexes are non-electrolyte in nature. The spectra show that all complexes are octahedral in which two chlorides are attached to the metal ion. The optimized bond lengths, bond angles and the calculated quantum chemical parameters for the ligands (HLn) and Ru(III) complexes are investigated. Molecular docking was used to predict the binding between azo dye ligands and the receptor of prostate cancer mutant 2q7k-hormone. The activation thermodynamic parameters, such as activation energy (Ea), enthalpy (ΔH?), entropy (Δ?) and Gibbs free energy change of the decomposition (ΔG?) are calculated using Coats-Redfern and Horowitz-Metzger methods. The ligands (HLn) and Ru(III) complexes are screened for their antimicrobial activity against bacterial and fungal species. The tested complexes (1) and (2) have good antibacterial activity against Bacillus cereus and the tested ligands (HL2, HL3 and HL5) have good antifungal activity against Aspergillus Niger and also HL5 showed against Alternaria alternata. The catalytic oxidation of cyclohexanol by [Ru(Ln)(AsPh3)2Cl2]·xH2O with periodic acid as co-oxidant is described. The Ru(III) complexes exhibited a catalytic activity for the oxidation of cyclohexanol to cyclohexanon.
Geometrical structures, thermal, optical and electrical properties of azo quinoline derivatives
El-Ghamaz,El-Bindary,El-Sonbati,Beshry
, p. 628 - 639 (2015)
Azo quinoline derivatives (AQx) were synthesized by coupling of 8-hydroxyquinoline with aniline derivatives. The optimized bond lengths, bond angles and the quantum chemical parameters for the ligands (AQx) were calculated. The dielectric constants (εr and εi) and ac conductivity (σac) were studied as a function of both temperature and frequency in the temperature range 293-509 K and frequency range 102-105 Hz. The thermal activation energies ΔE1 and ΔE2 were calculated and found to be in the range of 0.03-0.26 and 0.2-1.31 eV, respectively, depending on the substituent and frequency. The conduction mechanism was investigated for all the derivatives under investigation. The ligands (AQ1, AQ2 and AQ4) were found to be controlled by correlated barrier hopping model and the ligands (AQ3 and AQ5) were controlled by small polaron tunneling mechanism. The optical absorption properties of the ligands thin films were investigated. The absorption coefficient (α) spectra reveals two absorption peaks which are assigned as π-π? and n-π? transitions. The optical energy gap (Eg) was investigated near the absorption edge and found to be in the range of 1.34-2.26 and 1.47-1.69 eV for direct and indirect optical transitions, respectively.
Photo-physical and structural studies of some synthesized arylazoquinoline dyes
Ghanadzadeh Gilani,Taghvaei,Moradi Rufchahi,Mirzaei
, p. 111 - 124 (2017)
This study presents the spectral and structure characteristics of seven azoquinoline dyes with different substituents and their new methylated counterparts for the first time, where some compounds are newly synthesized. The solvatochromic, tautomeric, hal
Molecular docking, potentiometric and thermodynamic studies of some azo quinoline compounds
Shoair,El-Bindary,El-Sonbati,Beshry
, p. 740 - 748 (2016)
The ligands of 5-(4-derivative phenyl azo)-8-hydroxyquinoline and its derivatives (HLn) were synthesized from the coupling of the quinoline with diazonium salt derived from aniline and its p-derivatives and characterized by different spectrosco
Synthesis of mordant azo dyes using supported Diazonium ions and br?nsted acidic ionic liquids
Das, Pranab J.,Begum, Jesmin
, p. 355 - 361 (2019/05/21)
Diazonium ions supported on Amberlite IR120 (Na+) have been prepared and used for the synthesis of a variety of 5-arylazo-8-hydroxyquinoline in solid state as well as in pyridinium based ionic liquids under microwave heating. The two methods have been compared with respect to ease of recovery, yield, reaction time and environmental impact.
Pyridine aided progression from amorphous to crystalline bis([5-(aryl)-1-diazenyl]quinolin-8-olato)zinc(II) compounds???Solution and solid-state structural characterization, nanoparticle formation and antibacterial activity
Basu Baul, Tushar S.,Nongsiej, Khrawborlang,Biswas, Koel,Joshi, Santa Ram,H?pfl, Herbert
, p. 756 - 773 (2018/07/29)
Ten new zinc(II) compounds, viz. [Zn(LQ)2(4-MePy)2]·H2O (1), [Zn(LMeAQ)2(Py)2]·C6H6 (2a), [Zn(LMeAQ)2(H2O)2] (2b
Studies on Pollutants: Spectrophotometric Determination of Nitrile as "Azoxine Dye"
Bhatt, Alka,Gupta, V. K.
, p. 1056 - 1058 (2007/10/02)
Ten new reagent systems for determination of nitrile in water have been studied.A new system for the determination of nitrile using diazotised aromatic amine with 8-hydroxyquinoline as a coupling reagent has been developed.Sulphanilide was found to be most suited out of the ten amines tried for the determination of nitrite.The λmax of the dye is 500 nm.The Beer's law is followed in the range of 4-30 μg of nitrite per 25 ml.The molar absorptivity and Sandell's sensitivity are 30 x 1E3 litre mole-1 cm-1 and 0.0015 μg cm-3 respectively.The optimum reaction conditions and other analytical parameters such as, Beer's law, sen sitivity and interferences due to foreign species have been studied.
