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通过傅里叶变换红外光谱(FT-IR)和核磁共振氢谱(1H NMR)对所得聚合物的结构进行了表征。发现所得的聚苯并咪唑在不添加无机盐的情况下,可溶于非质子极性溶剂,如 N - 甲基 - 2 - 吡咯烷酮(NMP)、N,N - 二甲基乙酰胺(DMAc)、二甲基亚砜(DMSO)和间甲酚。
For further discussion, see the section on phenotype vs genotype and C2S vs S2C below. First, the current challenges associated with the interpretation of the typically complex yet information-rich ...
All the products were confirmed by comparing their melting points, 1 H NMR and 13 C NMR data with the literature data [23,36,37-39]. Representative procedure for 5-Ethoxycarbonyl-6- ...
研究人员运用1H NMR、13C NMR 和 HRMS 等技术对 4a - c、5a - b 的结构进行了详细表征,准确确定了这些化合物的结构。 光电子性质分析 研究人员在不同介电常数的溶液(甲苯、四氢呋喃(THF)、二氯甲烷(DCM)、甲醇(MeOH)和二甲基亚砜(DMSO))中,对化合物进行 ...
Flavonoids, which are present in most plants and used as useful ingredients in foods, pharmaceuticals, and functional cosmetics owing to biological properties that include antioxidant activities and ...
This research received financial support from FAPESB and CNPq. The authors thank National Cancer Institute (Bethesda, MD, USA) for donating the tumor cells used in this study, LABAREMN (UFBA) for ...
此外,它也能溶解于一些常用的有机溶剂如 DMSO(二甲基亚砜)等。在实际实验操作中 ... 84(18):5449 - 5453. [2] Gesell JJ, et al. Two - dimensional 1H NMR experiments show that the 23 - residue magainin antibiotic peptide is an alpha - helix ...