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大四写论文金虫 (正式写手)
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[求助]
求翻译这段话
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Equipments Proton nuclear magnetic resonance (1H-NMR, 500 MHz) spectra were recorded in DMSO-d6 solution using a Bruker (Germany) Avance 500 instrument. Proton resonances are designated as singlet (s), doublet (d), doublet of doublet (dd) and multiplet (m). FT-IR spectra were recorded on Jasco-680 (Japan) spectrophotometer. The spectra of solids were obtained using KBr pellets. The vibrational transition frequencies are reported in wavenumbers (cm-1). Band intensities are assigned as weak (w), medium (m), strong (s) and broad (br). Inherent viscosities were measured by using a Cannon-Fenske Routine Viscometer (Germany) at concentration of 0.5 g dL-1 at 25 C. Specific rotations were measured by a Jasco Polarimeter (Japan). Thermal gravimetric analysis (TGA) data for polymers were taken on a PerkinElmer (Pyris 1) instrument in a nitrogen atmosphere at a rate of 10 C min-1, and differential scanning calorimetry (DSC) data were recorded at a rate of 20 C. Glass transition temperatures (Tg) were read at the middle of the transition in the heat capacity taken from the heating DSC traces. Elemental analyses were performed by the Iranian Polymer and Petrochemical Institute, Tehran, Iran. Monomer synthesis (2S)-4-[(4-Methyl-2-phthalimidylpentanoylamino)benzoylamino]isophthalic acid (1) was synthesizes according to our previous work [31]. |
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