Silver nanocomposites based on a copolymer of 1-vinyl-1,2,4-triazole with crotonaldehyde

New polymer silver nanocomposites were synthesized using a copolymer of 1-vinyl-1,2,4-triazole with crotonaldehyde as the silver ion reducing agent and stabilizer of metal nanoparticles. The formation of the metallic phase in the nanoscale state was confirmed by UV spectroscopy and X-ray phase analysis. According to the transmission electron microscopy, nanoparticles have sizes of 2—14 nm and are uniformly distributed in the volume of the polymeric matrix.     

New network copolymers of 1-vinyl-1,2,4-triazole as efficient sorbents of mercury

The possibility of preparing copolymers by radical copolymerization of 1-vinyl-1,2,4-triazole with divinyl sulfide and divinyl diethylene glycol ether in the bulk was examined. The sorption characteristics of the new cross-linked copolymers with respect to mercury(II) ions under static conditions in acid solutions were studied.     

Nanocomposites with silver nanoparticles based on copolymer of 1-vinyl-1,2,4-triazole with N-vinylpyrrolidone

Russian Chemical Bulletin - New functional silver polymer nanocomposites were synthesized using copolymer of 1-vinyl-1,2,4-triazole with N-vinylpyrrolidone as a stabilizer of the formed metal...     

Sorption recovery of noble metal ions with a copolymer of 1-vinyl-1,2,4-triazole with acrylonitrile

Suspension copolymerization of 1-vinyl-1,2,4-triazole with acrylonitrile was used to synthesize an insoluble heat-resistant copolymer possessing sorption activity. An effect of the nature and concentration of acids on the recovery of noble metal ions Pt(IV), Pd(II), Au(III), and Ag(I) was observed. The kinetic and sorption characteristics of the copolymer were evaluated and the possibility of its application was assessed. IR and Raman spectroscopies were used to elucidate the mechanism of interaction of the copolymer with noble metal ions.     

Electrosynthesis of nanocomposite polymer coatings based on 1-vinyl-1,2,4-triazole–crotonaldehyde copolymers

Russian Journal of Applied Chemistry - The possibility of electrochemical preparation of metal–polymer nanocomposites and coatings on pure iron and steel electrode by combining the...     

Intermolecular interactions of 1-vinyl-1,2,4-triazole in various solvents

The solvent effect on intermolecular interactions of 1-vinyl-1,2,4-triazole was estimated by ¹H NMR spectroscopy. It was shown that 1-vinyl-1,2,4-triazole molecules form homoassociates (molecular stacks) which are broken on dilution with CCl₄. In polar solvents (dimethylacetamide-d ₆, D₂O), monomer-solvent heteroassociates prevail.     

Structure and properties of 3-amino-1-vinyl-1,2,4-triazole

The reaction of acetylene with 3-amino-1,2,4-triazole forms two isomeric 3-amino-N-vinyl-1,2,4-triazoles. Their structures have been studied by PMR and IR spectroscopy and dipole moments. The high activity of the new vinyl compounds of the azole series in the addition of electrophilic reagents, in polymerization, and in complex formation has been shown.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 11, pp. 1566–1569, November, 1973.     

Proton exchange in 1-vinyl-1,2,4-triazole and its derivatives

Proton exchange at C(₅) of the triazole ring has been studied in 1-vinyl-1,2,4-triazole, 1-ethyl-1,2,4-triazole, poly-1-vinyl-1,2,4-triazole, and their quaternary salts. The rate of exchange is catalyzed by bases and inhibited by acids.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 10, pp. 1365–1368, October, 1987.     

Hydrophilic functional copolymers of 1-vinyl-1,2,4-triazole with vinylsulfonic acid sodium salt

The free-radical copolymerization of 1-vinyl-1,2,4-triazole with vinylsulfonic acid sodium salt was conducted. New thermally stable functional water-soluble copolymers of various composition were synthesized. The structure and properties of the obtained copolymers were confirmed by IR, ¹H NMR spectroscopy, and thermogravimetric methods. It was found that 1-vinyl-1,2,4-triazole has higher reactivity than sodium vinylsulfonate. TGA and DSC show that the produced copolymers are stable when heated to 260 °C.     

Electrical conductivity of copolymers of 1-vinyl-1,2,4-triazole with N-vinyl-4,5,6,7-tetrahydroindole

New copolymers of 1-vinyl-1,2,4-triazole with N-vinyl-4,5,6,7-tetrahydroindole of different compositions were synthesized. The processes of doping them with diiodine and electrophysical properties were studied. An increase in the electrical conductivity of the diiodinedoped copolymers by seven orders of magnitude due to the formation of charge-transfer complexes was observed.     

Synthesis and characterization of silver polymer nanocomposites of 1-vinyl-1,2,4-triazole with acrylonitrile

Novel organic-inorganic nanocomposites were synthesized by chemical reduction of silver ions from silver acetate in DMSO and DMF solutions in the presence of the stabilizing copolymer of 1-vinyl-1,2,4-triazole-acrylonitrile. The solvents DMSO and DMF can act as efficient reducing agents for silver ions, which makes it possible to carry out the reaction under mild conditions and simplify procedures of nanocomposite isolation. The structure and properties of the starting copolymer and related nanocomposites were characterized by UV, IR, and ¹H and ¹³C NMR spectroscopy, as well as transmission electron microscopy and thermogravimetry. The prepared polymer nanocomposites contain 6.8–7.2% silver in the form of nanoparticles with a size of 2–20 nm uniformly dispersed in the polymer matrix. The nanocomposites are readily soluble in DMSO and DMF and do not decompose on heating to 260 °C.     

Preparation and properties of co-oligomers of 1-vinyl-1,2,4-triazole with N-vinyl-2-phenylpyrrole

Novel water-soluble co-oligomers of 1-vinyl-1,2,4-triazole and N-vinyl-2-phenylpyrrole have been prepared by radical copolymerization. Copolymerization constants of the monomers and the parameters of cooligomers microstructure have been determined. 1-Vinyl-1,2,4-triazole is more reactive in the monomers pair. The prepared co-oligomers are thermally stable and reveal properties typical of paramagnetic organic semiconductors.

     

The reactivity of 1-vinyl-1,2,4-triazole in the radical copolymerization with crotonic aldehyde

Copolymerization of 1-vinyl-1,2,4-triazole with crotonic aldehyde under the conditions of free-radical initiation has been studied. 1-Vinyl-1,2,4-triazole was found to be more reactive than crotonic aldehyde. The composition and structure of copolymers were determined by the elemental analysis, IR and quantitative ¹³C NMR spectroscopy. New polyfunctional water-soluble copolymers possessing thermostability up to 300°C were obtained.     

Antimicrobial activity of Ag0-nanocomposite copolymer of 1-vinyl-1,2,4-triazole with sodium acrylate

Russian Chemical Bulletin - Hydrophilic copolymer was obtained by radical copolymerization of 1-vinyl-1,2,4-triazole with sodium acrylate and used as a stabilizing matrix for metallic silver...     

Antimicrobial activity of silver—poly(1-vinyl-1,2,4-triazole) nanocomposites

Novel water-soluble nanocomposites containing 1–26 nm silver nanoparticles stabilized with poly(1-vinyl-1,2,4-triazole) were prepared. They possess plasmon absorption with the maxima at 412 and 415 nm and exhibit the antimicrobial activity against Gram-negative reference and nosocomial strains, oxacillin/methicillin-susceptible staphylococci, micrococci, and streptococci, as well as fungi.