Synthesis and characterization of metal complexes of azo dye based on 5‐nitro‐8‐hydroxyquinoline and their applications in dyeing polyester fabrics

Abstract

New Mn(II), Ni(II), Co(II) and Cu(II) complexes of an azo dye ligand based on p-phenylenediamine with 5-nitro-8-hydroxyquinoline were synthesized and characterized using elemental analysis, inductive coupled plasma analysis, molar conductance, powder X-ray diffraction, thermogravimetric analysis, magnetic moment measurements, and infrared, 1 H NMR, electron ionization mass and UV-visible spectral studies. The spectral and analytical data reveal that the azo dye ligand acts as a monobasic bidentate ligand via deprotonated OH and nitrogen atom of the quinoline ring. The data support the formulation of all complexes with a 2:1 ligand-to-metal ratio, except the Mn(II) complex that has a mononuclear formula. All complexes have an octahedral structure. The molar conductance data reveal that all the metal complexes are non-electrolytic in nature. From the X-ray data, the average particle size of the ligand and its complexes is 0.32-0.64 nm. The colour fastness to light, washing, perspiration, sublimation and rubbing of the prepared ligand and its complexes on polyester fabrics and colorimetric properties were measured. The results reveal that the ligand and its complexes have a good to moderate affinity to polyester fibres.

Fluorescent UO2(II) and ZrO(II) complexes: Synthesis, structural characterization, fluorescence, DNA binding studies and biological applications in cell probing

“…All compounds used in the present study were of pure grade available from Aldrich or Sigma. The ligands H 3 L 1 , H 2 L 2 and H 2 L 3 were synthesized as reported earlier …”

Metal complexes of azo mesalamine drug: Synthesis, characterization, and their application as an inhibitor of pathogenic fungi

“…An attempt to gain a better insight on the molecular structure of metal complexes, geometric optimization, and conformational analysis has been performed by the use of MM + force field as implemented in hyperchem 8.0. [26] 2.6 | Antifungal activity Antifungal activity of the synthesized ligand and its metal complexes were tested in vitro against soil-borne fungi including Macrophomina phaseolina, Verticillium dahliae, Fusarium solani, Fusarium oxysporum, F. incarnatum, F. camptoceras, F. semitectum, F. equisti, Sclerotinia sclerotiorum, and S. rolifsii by the agar diffusion method. [32] The fungicide Hatric 6% (RS)-1-pchlorophenyl 4,4-dimethyl-3-(1H-1,2,4-triazol-1-methyl) pentan-3-ol was used as a positive control with recommended dose(1000 ppm).…”

“…Many researches have focused on the metal complexes of the azo compounds due to their extensive applications in a wide range of areas. These complexes display a wide range of biological activity such as antimicrobial and anti-fungal agents, [17][18][19][20][21][22][23][24][25] dyeing processes, [26,27] and photoelectronics and sensitizers in photocatalytic reactions. [28][29][30] Based on all the previous facts, this paper is focused on the synthesis and characterization of novel azo dye ligand based on 5-aminosalycalic acid (mesalamine drug) with 2-amino pyrimidine and its Co 2+ , Ni 2+ , and Cu 2+ complexes.…”

Efficient Degradation of Mordant Blue 9 Using the Fenton-Activated Persulfate System

“…The presence of these colorants in effluents not only deteriorates water aesthetically but also harms the social system and health; moreover, these colorants present a threat to environmental sustainability [1][2][3]. Mordant dyes derived from acid dyes have been widely used for the coloration of textile fibers, such as wool, silk, polyester, cotton, and some modified cellulose fibers [4,5]. During coloration, some transition metal ions are typically used with mordant dyes to form a durable dye-metal complex ligand, which enhances fastness to light and washing in dyed fabrics [6].…”