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N n dimethylformamide (dmf)

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N,N-dimethylformamide (DMF) is a versatile organic solvent commonly used in various industrial and laboratory applications. It is a clear, colorless liquid with a high boiling point and low volatility. DMF is widely utilized as a solvent for a range of organic compounds, polymers, and other materials.

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Lab products found in correlation

Pyrrole, by Merck Group (1 mentions) Kmno4, by Merck Group (1 mentions) Milli q, by Merck Group (1 mentions) Ammonium hydroxide, by Merck Group (1 mentions) Direct q3 water purification system, by Merck Group (1 mentions) Methanol, by Merck Group (1 mentions) Tetrahydrofuran, by Merck Group (1 mentions) Sodium borohydride, by Merck Group (1 mentions) N n dimethylacetamide, by Merck Group (1 mentions) 4 nitrobenzoyl chloride, by Merck Group (1 mentions) 4 4 oxydianiline, by Merck Group (1 mentions) Benzoin, by Merck Group (1 mentions) Ethyl acetate, by Samchun (1 mentions) Ethanol, by Junsei (1 mentions) Dichloromethane, by Samchun (1 mentions) N hexane, by Samchun (1 mentions) Ag 5000g, by Shimadzu (1 mentions) Polyethylene oxide, by Merck Group (1 mentions)

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Dimethylformamide (DMF) (4 citations)

6 protocols using n n dimethylformamide (dmf)

1

Synthesis of High-Molecular-Weight PAN

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PAN (Mw = 150 000),
pyrrole (98%), APS, KMnO4, acetone, benzene, chloroform,
ethanol, hexane, toluene, and DMMP were purchased from Aldrich Chemical
Co. N,N-Dimethyl formamide (DMF)
was purchased from Junsei Chemical Co. Ltd.
Kim W, & Lee J.S. (2021). Freestanding and Flexible β-MnO2@Carbon Sheet for Application as a Highly Sensitive Dimethyl Methylphosphonate Sensor. ACS Omega, 6(7), 4988-4994.
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2

Synthesis and Purification of Magnetic Contrast Agent

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Polysuccinimide (2,000 ~ 3,000 g/mol) was purchased from Baypure, Bayer Chemicals AG, Leverkusen, Germany. 1-Hexadecylamine (C16-NH2), ethanolamine, ammonium hydroxide (NH3 content 28 % ~ 30 %), ferrous chloride tetrahydrate (FeCl2 · 4H2O), ferric chloride hexahydrate (FeCl3 · 6H2O) were purchased from Aldrich Chemical Company, Inc., Milwaukee, WI, USA. N,N-dimethylformamide (DMF) was purchased from Junsei Chemical Co., Ltd., Tokyo, Japan. Hallow fiber filter membrane (dialysis with tangential flow separation module) and peristatic pump for the purification of large amounts of contrast agent were purchased from KD Scientific, Holliston, MA, USA. Freeze dryer Bondiro and deep freezer Gudero were purchased from Ilshin, Daejeon, South Korea. Pure 18.2 MΩ cm distilled water was used by Milli-Q, Millipore, Molsheim, France. All the other reagents were commercially available and used without further purification. A commercial contrast agent, Resovist® 1.4 ml (SH U 555 A) as a control for comparison with experiment was purchased from Schering Bayer AG, Berlin, Germany.
Ha D.C., Lee H.Y., Son Y.W., Yuk S.H., Choi Y.W., Kwak B.K., Shin B.C., Cho C.W, & Cho S.H. (2014). Preparation and evaluation of poly(2-hydroxyethyl aspartamide)-hexadecylamine-iron oxide for MR imaging of lymph nodes. Nanoscale Research Letters, 9(1), 38.
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3

Fabrication of NCM622 Lithium-Ion Battery

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PAN powder (copolymer of acrylonitrile (94 mol%) and methylacrylate (6 mol%), Mw = 80,000) was purchased from Polysciences Inc., Warrington, PA, USA. N,N-dimethylformamide (DMF) and ADEP were supplied by Junsei Chemical Co., Ltd., Tokyo, Japan, and Universal Chemtech. Co., Ltd., Nonsan-si, Korea, respectively. Lithium nickel cobalt manganese oxide (NCM622, Ni:Co:Mn = 6:2:2, 7.7 mg/cm2), lithium metal, and 1 M lithium hexafluorophosphate (LiPF6) in ethylene carbonate (EC) and dimethyl carbonate (DMC) (1/1 (v/v)) with 10 wt% fluoroethylene carbonate (FEC) and 2 wt% vinylene carbonate (VC) were provided by Wellcos Co., Gunpo-si, Korea, and used as received. Celgard 2400 (~40% in porosity and 25 μm in thickness), supplied by Celgard LLC., Charlotte, NC, USA, was used as a reference separator.
Kang S.H., Jeong H.Y., Kim T.H., Lee J.Y., Hong S.K., Hong Y.T., Choi J., So S., Yoon S.J, & Yu D.M. (2022). Aluminum Diethylphosphinate-Incorporated Flame-Retardant Polyacrylonitrile Separators for Safety of Lithium-Ion Batteries. Polymers, 14(9), 1649.
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4

Organic Synthesis of Aromatic Diamine Precursors

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Benzoin, sodium borohydride (NaBH4, ≥98.0%), 4-nitrobenzoyl chloride (4-NBC, 98%), methanol (MeOH, ≥99.8%), tetrahydrofuran (THF, ≥99.9%), N,N’-dimethylacetamide (DMAc, ≥99.8%), pyromellitic dianhydride (PMDA), and 4,4′-oxydianiline (ODA) were purchased from Sigma-Aldrich Korea (Seoul, Korea). Solvents such as N,N-dimethylformamide (DMF), dimethyl sulfoxide (DMSO), N-methyl pyrrolidone (NMP), chloroform (CHCl3), and ethanol were purchased from Junsei Chemical Co (Tokyo, Japan). As for 4,4-Diphthalic anhydride (6-FDA, ≥98.0%) and 10% palladium on carbon (Pd/C), they were purchased from Tokyo Chemical Industry Co. (TCI) (Tokyo, Japan). n-Hexane, ethyl acetate, and dichloromethane were purchased from Samchun Pure Chemicals (Pyeongtaek, Korea). Celite 545, which is a kind of diatomite whose main component is silica and is used to separate a catalyst from the reaction mixture, and γ-butyrolactone were purchased from Daejung (Siheung, Korea). The deionized water used in the experiments was purified by a Direct-Q®3 water purification system (EMD Millipore) (Busan, Korea). All purchased chemical reagents were used without further purification.
Lee J.S., Yan Y.Z., Park S.S., Ahn S.K, & Ha C.S. (2022). A Novel Diamine Containing Ester and Diphenylethane Groups for Colorless Polyimide with a Low Dielectric Constant and Low Water Absorption. Polymers, 14(21), 4504.
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5

Fabrication of Esophageal Polymer Scaffolds

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Esophageal polymeric scaffolds were fabricated by electrospinning as described previously (Fig. 2A) [10 (link)]. Briefly, 30 wt% polyethylene oxide (Mw=100,000, Sigma) solution in distilled water was electrospun onto rotating stainless steel mandrels (diameter=2 cm) to 2 mm thickness. Then, 20 wt% PU (Pellethane, Lubrizol LifeSciences) solution in N,N-dimethylformamide (Junsei Chemical Co.) was also electrospun onto the collector at the same thickness. The inner layer was made at a linear speed of 0.31 m/s (1,200 rpm) so that random fiber arrangement could occur. On the other hand, the outer layer rotated the mandrel at a linear speed of 3.14 m/sec (12,000 rpm), which led to a circumferential orientation of the fibers. In both cases, the feeding rate of the solution was fixed to 0.5 mL/hr. The distance between the nozzle and flat sheet collector was set precisely at 25 cm, with 15 kV generated by a power supply. The prepared double-layered esophageal scaffold was dried overnight in a vacuum oven (38 °C) to remove residual organic solvent. The mechanical strengths of two-layered PU scaffolds were measured using a tensile test machine (AG-5000G; Shimadzu) which was equipped with a 50-kgf load cell at a crosshead speed of 10 mm/min. Specimens were prepared in the form of a standard dumbbell-shape (n=4).
Kim I.G., Wu Y., Park S.A., Choi J.S., Kwon S.K., Choi S.H., Jung K.C., Shin J.W, & Chung E.J. (2023). Assessment of Esophageal Reconstruction via Bioreactor Cultivation of a Synthetic Scaffold in a Canine Model. Clinical and Experimental Otorhinolaryngology, 16(2), 165-176.
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6

PDMS-based Cell Culture Device

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As shown in the schematic design (Fig. 1), the device was fabricated with an external diameter of 28 mm, internal diameter of 22 mm, and height of 17 mm. After mixing polydimethylsiloxane (PDMS, Sewang Hitech, South Korea) and curing agent (Sewang Hitech, South Korea) at a ratio of 10:1, it was poured into a cast and air bubbles were eliminated using a vacuum pump for 30 min. The cured device was then attached onto a 6-well plate with PDMS bonding and connected to a 14G needle to open the pore under the 6-well plate. The lateral holes of the membrane were punched using a 0.1 mm PDMS punch. Devices were sterilized with 70% alcohol. To prepare the nanofiber, 1.5% (w/v) PCL (Sigma-Aldrich, MO, USA) was dissolved in a mixed solution of 7 ml tetrahydrofuran (Junsei, Japan) and 3 ml N,N-dimethylformamide (Junsei, Japan) and stirred for 24 h. After stirring, 45 μg/ml of C-phycocyanin was added to confer several positive functions (anti-inflammatory, ROS scavenging, etc.) to the cell culture based on our previous study21 (link). The distance of the needle tip to the collector was 15 cm, and the solution was electrospun at 1 ml/h and 15 kV. The nanofiber (PCL-NF) was attached to the membrane using PDMS.
Jung M.H., Jung S.M, & Shin H.S. (2016). Co-stimulation of HaCaT keratinization with mechanical stress and air-exposure using a novel 3D culture device. Scientific Reports, 6, 33889.
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