Tag: M.W=150-200

Watanabe, Hironobu published the artcileRole of the Counteranion in the Stereospecific Living Cationic Polymerization of N-Vinylcarbazole and Vinyl Ethers: Mechanistic Investigation and Synthesis of Stereo-Designed Polymers, COA of Formula: C8H15ClN2, the publication is Macromolecules (Washington, DC, United States) (2022), 55(11), 4378-4388, database is CAplus.

The effects of counteranions in the cationic polymerization of N-vinylcarbazole (NVC) and vinyl ethers were investigated to develop guidelines for stereospecific living cationic polymerization The counteranion structure, such as the charge number, metal center, and ligand, was systematically examined using the CF₃SO₃H/onium halide/metal halide initiating system. As a result, the electronic properties rather than the steric bulkiness of the counteranion were demonstrated to be key to stereoregulation during the polymerization of N-vinylcarbazole. Fine-tuning the stereoregularity of the resultant polymers was achieved (mm = 45-95%) while maintaining the living nature of polymerization Computational anal. indicated that the stereoregulation was attributed to electrostatic interactions between the counteranion and pendant aromatic rings. These findings also allowed stereospecific polymerization of vinyl ethers containing an aromatic ring in the pendant. Moreover, the successful synthesis of “stereo-designed” polymers, such as stereoblock and stereocontrolled block copolymers, was achieved by appropriately designing counteranions for living cationic polymerization

Macromolecules (Washington, DC, United States) published new progress about 79917-90-1. 79917-90-1 belongs to imidazoles-derivatives, auxiliary class Ionic Liquid,Ionic Liquid, name is 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, and the molecular formula is C22H32O2, COA of Formula: C8H15ClN2.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Vasilin, Vladimir K. published the artcile3-Amino(azido)-4,6-aryl(hetaryl)thieno[2,3-b]pyridines and benzo(furo,thieno)[c]thieno[2,3,4-i,j]-2,7-naphthyridines on their basis: synthesis, spectral properties and prediction of biological activity, Related Products of imidazoles-derivatives, the publication is Chemistry of Heterocyclic Compounds (New York, NY, United States) (2020), 56(8), 1078-1091, database is CAplus.

3-Azido-4,6-diarylthienopyridines I [R = H, Me, OMe, 3,4-di-OMe; R¹ = CO₂Et, CO₂Ph, C(O)N(Ph)₂, etc.; Ar = Ph, 4-BrC₆H₄, 4-MeC₆H₄, 4-MeOC₆H₄] obtained from the corresponding 3-amino derivatives II were convenient precursors in the synthesis of the peri-annulated heterocyclic system, benzo(furo,thieno)[c]thieno[2,3,4-i,j]-2,7-naphthyridines III. The spectral characteristics of the obtained compounds I, II and III (IR, UV, NMR (¹H, ¹³C, ¹H-¹⁵N gHMBC) spectra, luminescence spectra, mass spectra) were studied. Computational prediction of potential biol. action had been performed.

Chemistry of Heterocyclic Compounds (New York, NY, United States) published new progress about 4760-35-4. 4760-35-4 belongs to imidazoles-derivatives, auxiliary class Chloride,Benzimidazole, name is 2-(Chloromethyl)-1-methyl-1H-benzo[d]imidazole, and the molecular formula is C18H21BO4, Related Products of imidazoles-derivatives.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Lee, Jeong-Hyeon published the artcileHierarchical nanostructured MnF₂ fabricated using rapid microwave synthesis as abnormal high-capacity of anode materials for Li-ion batteries, Safety of 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, the publication is Journal of Physics and Chemistry of Solids (2022), 110477, database is CAplus.

Tailoring various architectures of electrode material has been deemed a feasible route for improving the surface reactivity, the contact area between electrode and electrolyte, and enabling shortened electronic pathways to realize higher performance lithium-ion batteries. Here, we rapidly synthesized the manganese fluoride (MnF₂) with various morphologies by microwave irradiation using ionic liquid as the fluoride source, soft template, and microwave absorber solvent. The hierarchical nanostructured MnF₂ were optimized by controlling the purity of ionic liquid, microwave heating rate, and precursor concentration The dominant factors influencing the morphologies of MnF₂ were systematically investigated and relevant descriptions for the formation mechanism were suggested. Also, we demonstrated the abnormal high-capacity lithium-ion battery anode using the hierarchical nanostructured MnF₂ anode based on the conversion mechanism. The prepared MnF₂ anode yielded a maximum reversible specific capacity of 986 mAhg^-1 at 0.1C after 30 cycles. This study provides a comprehensive understanding of the morphol. control of the hierarchical structured MnF₂ using the microwave-ionic liquid combination method for high-capacity lithium-ion battery anode.

Journal of Physics and Chemistry of Solids published new progress about 79917-90-1. 79917-90-1 belongs to imidazoles-derivatives, auxiliary class Ionic Liquid,Ionic Liquid, name is 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, and the molecular formula is C8H15ClN2, Safety of 3-Butyl-1-methyl-1H-imidazol-3-ium chloride.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Sayko, Ryan published the artcileUniversality in Solution Properties of Polymers in Ionic Liquids, Application In Synthesis of 79917-90-1, the publication is ACS Applied Polymer Materials (2022), 4(3), 1966-1973, database is CAplus.

Knowledge of the interaction parameters for polymers in different solvents is crucial for exploring the viscoelastic properties and processing capabilities of polymer solutions Here, we apply a scaling theory of semidilute polymer solutions to quantify the solution properties of cellulose, poly(ethylene oxide), poly(Me methacrylate), and poly(acrylonitrile-co-itaconic acid) in different ionic liquids The starting point of our approach is a scaling relationship between the solution correlation length ξ = lg^ν/B and the number of repeat units g in a correlation blob for polymers with a repeat unit projection length l, chain segment fractal dimension 1/ν, and the corresponding interaction parameter B describing polymer-solvent affinity and assuming values B_g, B_th, and 1 in different solution regimes. In the framework of this approach, we obtain crossover concentrations to the semidilute solution regime, c*, the solution regime of overlapping thermal blobs, c_th, and the concentrated solution regime, c**. The method takes advantage of the linear relationship of the specific viscosity η_sp with the number of correlation blobs per chain N_w/g in the unentangled Rouse regime for polymers with a weight-average d.p. N_w. The application of our approach to entangled solutions provides the chain packing number, P_e, and completes the set of parameters {B_g, B_th, and P_e} that uniquely describes the static and dynamic solution properties for a given polymer/solvent pair. This approach also allows us to identify a trend relating the B_g parameter to the van der Waals volume of the ionic liquid anion, analogous to the Hofmeister series, and to obtain the temperature and solvent type dependence of the polymer excluded volume and Kuhn length.

ACS Applied Polymer Materials published new progress about 79917-90-1. 79917-90-1 belongs to imidazoles-derivatives, auxiliary class Ionic Liquid,Ionic Liquid, name is 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, and the molecular formula is C8H15ClN2, Application In Synthesis of 79917-90-1.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Priyadarshini, Antara published the artcileNanofiltration of Aqueous Dye Solution through the Diffused Rough Pores of a Carbonaceous-Kaolinite Amalgamation Membrane, SDS of cas: 79917-90-1, the publication is ACS ES&T Water (2022), 2(3), 414-424, database is CAplus.

This study demonstrates a supported carbonaceous-kaolinite composite membrane that has a highly porous medium with prevalent submicron pores. These pores exhibit a diffused configuration assembled by carbonaceous (Cn) nodules and kaolin particles wrapped by a thin Cn sheath. The membrane was prepared by three steps: (i) applying an acrylic-kaolin coating to a porous stainless-steel tube; (ii) compressing the dried coated layer in an isopress chamber to ratchet the amalgamated coating layer; and (iii) conducting partial pyrolysis to achieve the Cn-kaolin membrane (CKM), exhibiting a rough and diffused CK amalgam frame inherited from the intense compression. The membrane displays attractive nanofiltration performance, i.e., >95% rejection over 30 h and mean permeances of 4-10 L/h·m²·bar for the four probe dyes in water (50 ppm) with different mol. masses and charge types. The intricate and rough pore channels of the membrane agitate tiny turbulences amid the thin permeate streams, which drives an effective solute interaction with the pore walls. Solute retention occurred through entrapment along the pore walls, leading to a boundary layer, which assists further retention via dragging, circulating solute mols., and transferring them to the retentate. The filtrate permeates through nanopores of the CK amalgam frame.

ACS ES&T Water published new progress about 79917-90-1. 79917-90-1 belongs to imidazoles-derivatives, auxiliary class Ionic Liquid,Ionic Liquid, name is 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, and the molecular formula is C8H15ClN2, SDS of cas: 79917-90-1.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Kurtoglu-Oztulum, Samira F. published the artcileThermal stability limits of imidazolium, piperidinium, pyridinium, and pyrrolidinium ionic liquids immobilized on metal oxides, Safety of 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, the publication is Journal of Molecular Liquids (2022), 119804, database is CAplus.

Twenty-nine different ionic liquids (ILs) consisting of imidazolium, pyridinium, piperidinium, and pyrrolidinium cations and I^–, Cl^–, Br^–, PF^–₆, BF^–₄, [DCA]^–, and [NTf₂]^– anions were immobilized on MgO and SiO₂. Their short-term thermal stability limits were investigated by thermogravimetric anal. and compared with those of the corresponding bulk ILs. Data showed that the thermal stability limits of ILs change significantly when the ILs are immobilized on metal oxides. These changes were evaluated based on the structural interactions determined by IR spectroscopy. Systematic structural differences were considered to investigate the factors affecting the thermal stability of bulk ILs, and their counterparts immobilized on MgO and SiO₂. These structural changes were the change in the alkyl chain length, the methylation on C2 site in imidazolium ILs, the change in substituent position in the pyridinium ring, the change in the anion, and the change in the IL family. The strongest factor controlling the thermal stability limits of both bulk ILs and their supported counterparts was determined as the anion type. Accordingly, the basicity of the anion and the surface acidity of the metal oxide and their resulting interactions were found to have a significant effect on the thermal stability limits. Data presented here offer the opportunity to pick a suitable anion and cation pair according to the metal oxide, so that the supported IL can withstand the desired operation conditions in various applications, such as catalysis or gas separation

Journal of Molecular Liquids published new progress about 79917-90-1. 79917-90-1 belongs to imidazoles-derivatives, auxiliary class Ionic Liquid,Ionic Liquid, name is 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, and the molecular formula is C8H15ClN2, Safety of 3-Butyl-1-methyl-1H-imidazol-3-ium chloride.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Qu, Rui published the artcilePrediction on the combined toxicities of stimulation-only and inhibition-only contaminants using improved inverse distance weighted interpolation, SDS of cas: 79917-90-1, the publication is Chemosphere (2022), 287(Part_3), 132045, database is CAplus and MEDLINE.

The evaluation of ecol. risks of contaminant mixtures to organisms is very challenging due to the non-linear response of organisms to each component, especially under the co-existence of both stimulators and inhibitors. Whether the stimulatory effect can reduce or even offset the inhibitory effect would be critical to the risk assessment and the treatment measures of mixed pollutants. Here, the combined toxicity of sodium fluoride (NaF), a stimulator with stimulation rate >100%, and six compounds that cannot induce hormesis (four ionic liquids (ILs) and two pesticides) were studied. The time-dependent toxicity of each toxicant on Vibrio qinghaiensis sp.-Q67 was investigated at 0.25, 2, 4, 6, 8, 10 and 12 h. Results showed that four ILs and two pesticides failed to induce hormesis, while NaF induced hormesis from 2 to 6 h and induced stimulation only after 6 h and reached its maximum (650%) at 12 h. All mixture rays with NaF induced hormesis at different times. In the four NaF-IL mixture systems, the absolute value of maximum stimulation demonstrated an upwards and then a downwards trend with the increasing of mixture ratio of IL. In two NaF-pesticide systems, the maximum stimulation effect declined with the increasing of the mixture ratio of pesticide. The toxicities of the mixture were successfully predicted by the improved inverse distance weighted interpolation, which are not able to be predicted by the commonly used concentration addition or independent action models. This paper shed lights on evaluating the hormesis of mixtures and the ecol. risk of fluoride.

Chemosphere published new progress about 79917-90-1. 79917-90-1 belongs to imidazoles-derivatives, auxiliary class Ionic Liquid,Ionic Liquid, name is 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, and the molecular formula is C8H15ClN2, SDS of cas: 79917-90-1.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Watson, Andrew A. published the artcileChiral heterocyclic ligands. VIII. Syntheses and complexes of new chelating ligands derived from camphor, Safety of 2-(Chloromethyl)-1-methyl-1H-benzo[d]imidazole, the publication is Australian Journal of Chemistry (1995), 48(9), 1549-72, database is CAplus.

The syntheses of 23 new chelating ligands are described. Most of these ligands are derived from the chiral pyrazole (I) which was linked to a variety of heterocycles, pyridine, pyrimidine, pyridazine, isoxazole, benzimidazole, thiophene and furan. In certain cases the parent achiral analogs also were prepared Preliminary studies of the coordination chem. of these ligands with selected transition metals were carried out. The x-ray crystal structures of palladium complexes of isoxazole- and thiophene-containing ligands also were determined

Australian Journal of Chemistry published new progress about 4760-35-4. 4760-35-4 belongs to imidazoles-derivatives, auxiliary class Chloride,Benzimidazole, name is 2-(Chloromethyl)-1-methyl-1H-benzo[d]imidazole, and the molecular formula is C9H20Cl2Si, Safety of 2-(Chloromethyl)-1-methyl-1H-benzo[d]imidazole.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Liu, Yan published the artcileCooperative modification of PVDF electroactive films due to the exfoliated and oriented Na ⁺– MMT with assistance of different cationic chain length ionic liquids, SDS of cas: 79917-90-1, the publication is Journal of Applied Polymer Science (2022), 139(22), 52238, database is CAplus.

Poly(vinylidene fluoride) (PVDF) based nano dielec. composites have been investigated widely due to their potential application in sensors, actuators, and energy storage fields. To achieve these goals, a novel modification of PVDF electroactive films was prepared due to the exfoliated and oriented Na⁺-MMT with the assistance of different cationic chain length imidazole-based ionic liquids The results proved the ion exchange between Na⁺-MMT and ILs promoted exfoliation and uniform dispersion of Na⁺-MMT in PVDF matrix efficiently even under a low ILs content (<0.05%). Furthermore, the existence of ILs and shearing force contributed to the oriented dispersion of Na⁺-MMT. The synergistic effect of Na⁺-MMT and ILs induced the crystal conformation transition from non-polar α-crystal to electroactive β/γ crystal. Compared with pure PVDF, PVDF/Na⁺-MMT/ILs nanocomposites with longer cationic chain ILs showed higher dielec. constant, breakdown strength, and energy d., while kept low-dielec. loss and conductivity The improved compatibility between PVDF and Na⁺-MMT due to the ion exchange and decreased crystal size for the polar β/γ crystal enhanced the transparency and elongation at break of PVDF/Na⁺-MMT/ILs nanocomposites significantly. The results proved [C16MIM][Cl] behaved optimum synergistic modification effect for the nanocomposites, and which showed potential applications in dielec. energy storage and microelectronic fields.

Journal of Applied Polymer Science published new progress about 79917-90-1. 79917-90-1 belongs to imidazoles-derivatives, auxiliary class Ionic Liquid,Ionic Liquid, name is 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, and the molecular formula is C8H15ClN2, SDS of cas: 79917-90-1.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Wilson, J. Gerald published the artcileIminodiacetic acid derivatives of benzimidazole. Synthesis of N-(benzimidazol-2-ylmethyl)iminodiacetic acids, SDS of cas: 4760-35-4, the publication is Australian Journal of Chemistry (1983), 36(11), 2317-25, database is CAplus.

Ten new N-(2-benzimidazolylmethyl)iminodiacetic acids I [R = 5(6)-Me, 5,6-Me₂, 5(6)-Bu, 5(6)-Cl, 5,6-Cl₂, 5(6)-Br, 5(6)-iodo, 5(6)-O₂N] were prepared from the corresponding o-phenylenediamines via intermediate 2-chloromethyl and 2-aminomethyl benzimidazoles as ligands for ^99mTc. Anomalies associated with the synthesis of the iodo-substituted compound are described.

Australian Journal of Chemistry published new progress about 4760-35-4. 4760-35-4 belongs to imidazoles-derivatives, auxiliary class Chloride,Benzimidazole, name is 2-(Chloromethyl)-1-methyl-1H-benzo[d]imidazole, and the molecular formula is C9H13NO2, SDS of cas: 4760-35-4.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem