Synthesis and chelation properties of new polymeric ligand derived from 8-hydroxy-5-azoquinoline hydroxy benzene

Sankar, R.; Vijayalakshmi, S.; Subramanian, S.; Rajagopan, S.; Kaliyappan, T.

doi:10.1016/j.eurpolymj.2007.08.015

Cited by 18 publications

(7 citation statements)

References 27 publications

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“…The biomaterial of lignocellulosic nature is found to be one of the efficient biomaterial for the removal of toxic heavy metals from waste water. Since raw biomaterials show very low adsorption of metal ions, they are functionalized with different functional groups like carboxylic acid, sulfonic acid, amine, amide, phosphoric acid (Shankar et al 2007), Xanthate (Homagai et al 2011) to enhance the adsorption capacity. The biosorption process is cost effective, efficient, requires minimum chemical and also minimizes the toxic sludge production.…”

Section: Introductionmentioning

confidence: 99%

Regeneration and Reuse of Biomaterial for the Removal of Cadmium Ions from Waste Water

Kour

2016

J. Inst. Sci. Tech.

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The nitrogen functionalized biomaterial is used for the adsorption of Cd (II) from waste water. The application and possibility of regeneration and reuse of functionalized biomaterial were evaluated with adsorption desorption experiments. Cd (II) loaded biomaterial was eluted with sodium hydroxide, nitric acid, and hydrochloric acid. Among them 0.1 M nitric acid gave the most effective result releasing about 90% of metal ions onto the solution in six successive cycles. The result suggests the efficiency and applicability of functionalized biomaterial as a potential biosorbent in the removal of Cd (II) from waste water.

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Section: Introductionmentioning

confidence: 99%

Regeneration and Reuse of Biomaterial for the Removal of Cadmium Ions from Waste Water

Kour

2016

J. Inst. Sci. Tech.

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“…General procedure for synthesis of 5-azo-8-hydroxyquinoline dyes is known [11,12,20,31]. Aromatic amine (a-g) (35 mmol) was dissolved in concentrated HCl (30 mL).…”

Section: Materials and Synthesismentioning

confidence: 99%

Physico-Chemical and Light-Induced Properties of Quinoline Azo-dyes Polymers

Chomicki

Kharchenko

Skowroński

et al. 2020

IJMS

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We present investigation of optical and photochromic properties as well as of surface quality of thin films of novel methacrylic polymers with 8-hydroxyquinoline azo-dyes in side-chain. Additionally, thermal stability of polymer powders was examined and their glass transition temperature was determined. Optical properties (extinction coefficient and refractive index) were determined by spectroscopic ellipsometry (SE) combined with absorbance measurements. Photoresponsive behavior was investigated by determination of photoisomerization rates under irradiation with unpolarized 365 nm light, as well as by conduction of holographic grating inscription experiment. Thin film quality was determined by atomic force microscopy (AFM) measurements. Thermal analysis was performed by thermogravimetric (TG), derivative thermogravimetric (DTG) and differential scanning calorimetry (DSC) measurements. We found that optical properties as well as photoisomerization rates of investigated polymers are dependent on the substituent in the para position of the phenyl ring. Surface relief grating inscription was successfully generated only for materials with chromophores containing dimethylamino (N(CH3)2) and methyl (CH3) substituents, but all materials exhibited birefringence grating in the bulk. Surface of most thin films was very smooth, but its quality was impaired by neutral (H) as well as carboxyl (COOH) substituent. Thermal stability of copolymers with side-chain chromophores was improved compared to pure poly(methyl methacrylate) (PMMA).

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“…When L was dissolved in DMF, a Zn acetate solution in water was used; in this case the micelle core is hydrophobic and the polar groups form the shell, so that the reaction occurred on the surface. Some changes in the infrared spectra confirmed the reaction: the absorption bands of the ligand L at 1 668, 1 629, and 1 587 cm À1 shifted to 1 660, 1 611, and 1 580 cm À1 , while additional bands appeared as a result of metal complexation at 1 560 cm À1 , which was assigned to C --N, [18] 724 cm À1 , which corresponded to N-Zn bonds, [19] 466 cm À1 assigned to Zn-O, [20] and 976 cm À1 probably a result of Si-O-Zn absorption, [21] since the involvement of the siloxane bond in metal complexation is also possible. The other bands that correspond to the polysiloxane bonds were unchanged: 1 024, 1 094 (Si-O polymer), 1 260, and 800 cm À1 (Si-CH 3 ).…”

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confidence: 92%

Micellization of a Siloxane‐Based Segmented Copolymer in Organic Solvents and its Use as a Tool for Metal Complex Nanoparticles

Racleş¹,

Cazacu²,

Ioanid³

et al. 2008

Macromol. Rapid Commun.

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The micellization of a polysiloxane‐ketimine has been studied in solvents of different polarity, i.e., dimethylformamide (DMF) and toluene. The critical micelle concentration was determined from surface tension measurements ‐in DMF‐, and from viscosity variation with concentration. Metal complex nanoparticles have been synthesized from this macromolecular ligand in DMF and in toluene, using the formed micelles as templates. Spectroscopic data (IR and UV‐vis) confirmed the metal complexation. TEM observations revealed the formation of nanoparticles with different morphologies, which were consistent with the assumed conformation of the ligand in solutions of the two selective solvents.magnified image

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Synthesis and chelation properties of new polymeric ligand derived from 8-hydroxy-5-azoquinoline hydroxy benzene

Cited by 18 publications

References 27 publications

Regeneration and Reuse of Biomaterial for the Removal of Cadmium Ions from Waste Water

Regeneration and Reuse of Biomaterial for the Removal of Cadmium Ions from Waste Water

Physico-Chemical and Light-Induced Properties of Quinoline Azo-dyes Polymers

Micellization of a Siloxane‐Based Segmented Copolymer in Organic Solvents and its Use as a Tool for Metal Complex Nanoparticles

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