Tetrahydrofuran thf n n dimethylformamide dmf

Manufactured by Merck Group

Sourced in United States

Tetrahydrofuran (THF) and N,N-dimethylformamide (DMF) are common laboratory solvents used in various chemical and analytical applications. THF is a colorless, volatile, and flammable liquid, while DMF is a colorless, hygroscopic, and polar aprotic solvent. Both solvents are widely used in organic synthesis, sample preparation, and extraction processes. However, a detailed description of their core functions and intended use cannot be provided while maintaining an unbiased and factual approach.

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Lab products found in correlation

Cdcl3, by Cambridge Isotopes (1 mentions) Dmso d6, by Cambridge Isotopes (1 mentions) Mwcnt, by Merck Group (1 mentions) 4 4 diaminodiphenyl sulfone dds, by Merck Group (1 mentions) Chloroform, by Merck Group (1 mentions) Ethanol, by Merck Group (1 mentions) Hydrochloric acid (hcl), by Merck Group (1 mentions) Sulfuric acid, by Merck Group (1 mentions) Nitric acid, by Merck Group (1 mentions) Polyethylene glycol peg, by Merck Group (1 mentions)

3 protocols using tetrahydrofuran thf n n dimethylformamide dmf

Purification and Drying of Common Solvents

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Tetrahydrofuran (THF), N,N-dimethylformamide (DMF) were obtained from Sigma-Aldrich and dried by immersing in 4 Å molecular sieves desiccant (beads, 4–8 mesh, Sigma-Aldrich) overnight before use. CDCl₃ and DMSO-d6 were purchased from Cambridge Isotope Laboratories. Other solvents were purchased from Fisher Chemical and used without further purification. All other chemicals were purchased from Sigma-Aldrich or Fisher Chemical without further purification before use unless specified.

Hsu T.G., Liu S., Guan X., Yoon S., Zhou J., Chen W.Y., Gaire S., Seylar J., Chen H., Wang Z., Rivera J., Wu L., Ziegler C.J., McKenzie R, & Wang J. (2023). Mechanochemically accessing a challenging-to-synthesize depolymerizable polymer. Nature Communications, 14, 225.

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Functionalization of MWCNTs with Polymers

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MWCNTs (diameter: 80–100 nm), sulfuric acid (H₂SO₄ 98%), hydrochloric acid (HCl 37%), nitric acid (65%), chloroform (99.8%), ethanol (99.7%), tetrahydrofuran (THF), N.N-dimethylformamide (DMF) and 4,4′-diaminodiphenyl sulfone (DDS) (MW) ≈ 248.3 gmol⁻¹) were purchased from Sigma Aldrich. PMMA (99.8% pure, average molecular weight (MW) ≈ 10,000 gmol⁻¹) and PHB (98% pure, average molecular weight (MW) ≈ 760,000 gmol⁻¹) were provided by BDH chemicals Ltd. Poole, England.

Qazi R.A., Khattak R., Ali Shah L., Ullah R., Khan M.S., Sadiq M., Hessien M.M, & El-Bahy Z.M. (2021). Effect of MWCNTs Functionalization on Thermal, Electrical, and Ammonia-Sensing Properties of MWCNTs/PMMA and PHB/MWCNTs/PMMA Thin Films Nanocomposites. Nanomaterials, 11(10), 2625.

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Electrospinning of PDTEC Polymer Fibers

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PDTEC was synthesized and characterized for composition, molecular weight (weight average, M_w), polydispersity index (PDI), and glass transition temperature (T_g) using previously published procedures.²⁹ Tetrahydrofuran (THF), N,N′-dimethylformamide (DMF) and poly(ethylene glycol) (PEG) 200 kDa were procured from Sigma-Aldrich (USA). PDTEC (M_w = 328 kDa) was dissolved in THF:DMF (9:1) (v/v) and PEG was dissolved in water:ethanol (1:9) (v/v) by stirring at 500 rpm overnight. The solution concentration was optimized to obtain smooth electrospun fibers and a 15% (w/v) solution of each of the polymers was chosen to produce fibers with diameters of 1–2 μm. Molecular weight of PDTEC, determined by gel permeation chromatography²⁹ was 328 ± 10 kDa (PDI=1.3) before electrospinning, and 301 ± 19 kDa (PDI=1.4) after electrospinning indicating that the polymer remains essentially unchanged during this process.

Goyal R., Vega M.E., Pastino A.K., Singh S., Guvendiren M., Kohn J., Murthy N.S, & Schwarzbauer J.E. (2017). Development of hybrid scaffolds with natural extracellular matrix deposited within synthetic polymeric fibers. Journal of biomedical materials research. Part A, 105(8), 2162-2170.

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