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کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: Inorganic Chemistry Research
- نوع مقاله: Journal Article
- کلمات کلیدی: Natural dyeing,Erbium(ΙΙΙ) complexes,Silk,Color Fastness,Mordant
- چکیده:
- چکیده انگلیسی: The aim of this research is to develop new mordants and a wide range of colors for natural dyeing of silk. In this study, two new erbium(ΙΙΙ) complexes, [Er(AO)(H2O)7](OAc)3 and [Er(AMH)(H2O)6](OAc)3 (AO = acridine orange, AMH = azomethine-H, and OAc = acetate anion), were synthesized, characterized and used as a mordant for the natural dyeing of silk yarns with an aqueous extract of green walnut husk. The mordanting method and the effective dyeing parameters including the quantity of the dye material, the pH and temperature of the dyeing bath, the mordant concentration, and the dyeing time were carefully optimized. The colorimetric properties (L*, a*, b*, and K/S) and color fastness characteristics (light and wash) of the dyed samples were also investigated. The mordanted silk yarns with synthesized erbium(ΙΙΙ) complexes were compared to unmordanted dyed samples as well as mordanted dyed samples only with simple salts including starting erbium salt (erbium(ΙΙΙ) acetate), stannous chloride, and aluminum potassium sulfate. The results indicated that the dyeing of silk in the presence of [Er(AO)(H2O)7](OAc)3 as the mordant provides the highest color difference, whereas the treated silk with [Er(AMH)(H2O)6](OAc)3 shows the most color strength value (K/S). Furthermore, all of the mordanted and unmordanted samples exhibited proper color fastness characteristics.
- انتشار مقاله: 05-03-1399
- نویسندگان: Razieh Motamedi,Hassan Hadadzadeh,Marzieh Daryanavard
- مشاهده
- جایگاه : پژوهشی
- مجله: Journal of Particle Science & Technology
- نوع مقاله: Journal Article
- کلمات کلیدی: Ionic Liquid,Magnetite,Hydrothermal,Solvothermal,1-Butyl-3-methylimidazolium hexafluorophosphate
- چکیده:
- چکیده انگلیسی: An anionic Fe(II) complex, (BMIM)4[Fe(CN)6] (where BMIM is 1-butyl-3-methylimidazolium), was synthesized in ionic liquid [BMIM][PF6] under reflux condition. The complex was characterized by elemental analysis and spectroscopic methods. The magnetite (Fe3O4) nanoparticles were prepared by the hydrothermal and solvothermal (in ionic liquid [BMIM][PF6]) methods from (BMIM)4[Fe(CN)6] as a precursor. The nanoparticles were characterized by X-ray diffraction (XRD), FT-IR, and scanning electron microscopy (SEM). The results show that the preparation of magnetite using the solvothermal method in [BMIM][PF6] has more advantages such as smaller size and high purity.
- انتشار مقاله: 12-09-1393
- نویسندگان: Mohammad Kaikhosravi,Hassan Hadadzadeh,Mohammad-Taghi Behnamfar
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Chemistry and Chemical Engineering
- نوع مقاله: Journal Article
- کلمات کلیدی: Phenylcyanamide,Ruthenium (II) complex,Oscillator strength,Charge-transfer band
- چکیده:
- چکیده انگلیسی: [Ru(terpy)(bpy)(L)]PF6 complexes, where terpy is 2,2΄:6′,2″– terpyridine, bpy is 2,2΄ - bipyridine and L is monoanions of 4 - bromophenylcyanamide (4 - Brpcyd), 4-methoxyphenylcyanamide (4 - MeOPcyd), 2, 4 - dibromophenylcyanamide (2,4 - Br2pcyd), 2,4-dimethylphenylcyanamide (2,4 - Me2pcyd), 2 - methylphenylcyanamide (2 - MePcyd), phenylcyanamide (Pcyd) and naphtylcyanamide (ncyd) have been prepared and characterized by elemental analysis, IR, 1H-NMR and UV-vis spectroscopies and cyclic voltammetry. Spectroelectrochemistry was used to generate the electronic absorption spectra of the Ru(III) complexes, [Ru(terpy)(bpy)(L)]2+ in acetonitrile solution. The spectral data associated with the Ru(III)-cyanamido LMCT chromophore were compared to those derived from Ru(III) analogues in order to gain a greater understanding the effect of spectator ligands on the nature of the Ru(III)-Cyanamide bond.The data supports greater covalency in the Ru(III)-cyanamide bond of [Ru(terpy)(bpy)(L)]2+ complexes compared to their Ru(III) analogues.
- انتشار مقاله: 18-03-1383
- نویسندگان: Hassan Hadadzadeh,Ali Reza Rezvani
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Chemistry and Chemical Engineering
- نوع مقاله: Journal Article
- کلمات کلیدی: Oxime,Phenycyanamide,Co(III) complex,Comproportionation equilibrium constant
- چکیده:
- چکیده انگلیسی: Electrochemical behavior of the new mono and dinuclear Co (III) complexes of the types trans-[pyCo((DO)(DOH)pn )(L)]PF6 and [{py Co((DO)(DOH)pn)}2 (μ-dicyd)] (PF6)2 have been studied in acetonitrile solution. All the mono nuclear complexes show two quasi- reversible reduction couples associate to Co(III/II)and Co(II/I). Each of these redox couples split to two one electron waves in dinuclear complex.
- انتشار مقاله: 18-03-1383
- نویسندگان: Ali Reza Rezvani,Hassan Hadadzadeh
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Chemistry and Chemical Engineering
- نوع مقاله: Journal Article
- کلمات کلیدی: Cyclic Voltammetry,Oxime,Phenylcyanamide,LMCT,Quasi-reversible reduction
- چکیده:
- چکیده انگلیسی: Six new complexes of the type trans-[LCo((DO)(DOH)pn)L'] where (DO)(DOH)pn= N2, N2'-propanediolbis (2,3-butanedione 2-imine 3-oxime), L-Cl¯ and L'=mono-anaion of phenylcyanamide (pcyd), 2,5-dichlorophenylcyanamide (2,5-Cl2 pcyd), 2,4-dimethyl pehylcyanamide (2,4-Me2 pcyd) and L=L'=pcyd, 2,5-Cl2 pcyd, 2,4-Me2 pcyd, have been synthesized and characterized by elemental analysis, spectroscopy and cyclic voltammetry. The electronic absorption spectra of the Co(III) complexes show two low-energy ligand to metal charge transfer band that are associated with Co(III)-NCN chromophore. The cyclic voltammogrm of these complexes exhibit two subsequent quasi-reversible reduction couple repated to Co(III)/Co(II) and Co(II)/Co(I), respectively.
- انتشار مقاله: 14-12-1379
- نویسندگان: Ali Reza Rezvani,Hassan Hadadzadeh
- مشاهده
- جایگاه : پژوهشی
- مجله: Inorganic Chemistry Research
- نوع مقاله: Journal Article
- کلمات کلیدی: Natural dyeing,Erbium(ΙΙΙ) complexes,Silk,Color Fastness,Mordant
- چکیده:
- چکیده انگلیسی: The aim of this research is to develop new mordants and a wide range of colors for natural dyeing of silk. In this study, two new erbium(ΙΙΙ) complexes, [Er(AO)(H2O)7](OAc)3 and [Er(AMH)(H2O)6](OAc)3 (AO = acridine orange, AMH = azomethine-H, and OAc = acetate anion), were synthesized, characterized and used as a mordant for the natural dyeing of silk yarns with an aqueous extract of green walnut husk. The mordanting method and the effective dyeing parameters including the quantity of the dye material, the pH and temperature of the dyeing bath, the mordant concentration, and the dyeing time were carefully optimized. The colorimetric properties (L*, a*, b*, and K/S) and color fastness characteristics (light and wash) of the dyed samples were also investigated. The mordanted silk yarns with synthesized erbium(ΙΙΙ) complexes were compared to unmordanted dyed samples as well as mordanted dyed samples only with simple salts including starting erbium salt (erbium(ΙΙΙ) acetate), stannous chloride, and aluminum potassium sulfate. The results indicated that the dyeing of silk in the presence of [Er(AO)(H2O)7](OAc)3 as the mordant provides the highest color difference, whereas the treated silk with [Er(AMH)(H2O)6](OAc)3 shows the most color strength value (K/S). Furthermore, all of the mordanted and unmordanted samples exhibited proper color fastness characteristics.
- انتشار مقاله: 05-03-1399
- نویسندگان: Razieh Motamedi,Hassan Hadadzadeh,Marzieh Daryanavard
- مشاهده