2023年1月18日 · Herein, we walk the reader through correct interpretation of 1 H NMR spectra of functionalized PEG. Carbon satellite peaks observed in 1 H NMR spectra are due to the 1.1% …

2003年5月17日 · We synthesized a library of 50 poly (ethylene glycol) (PEG) derivatives to expand the extent of conjugation with biologically active molecules (biopolymers, peptides, …

2023年1月18日 · ABSTRACT: The molecular weight, purity, and functionalization of polyethylene glycols are often characterized by 1H NMR spectroscopy. Oft-forgotten, the typical 1H NMR …

1990年8月1日 · In the present work we show that proton NMR spectra of PEGs dissolved in deuterated dimethyl sulfoxide (but not other solvents) reveal a hydroxyl peak at 4.56 (±0.02) …

2012年5月25日 · In this study, a star-shaped 4-arm PEG molecule that contained different kinds of functional groups at its ends was synthesized using DY as the fluorescent core. Depending …

2023年1月18日 · The molecular weight, purity, and functionalization of polyethylene glycols are often characterized by 1H NMR spectroscopy. Oft-forgotten, the typical 1H NMR pulse …

2023年1月18日 · The molecular weight, purity, and functionalization of polyethylene glycols are often characterized by 1 H NMR spectroscopy. Oft-forgotten, the typical 1 H NMR pulse …

聚乙二醇（peg）脂质纳米颗粒（lnp）在水中自发组装，形成均匀大小的纳米颗粒，与单独使用药物的血液清除率相比，具有更长的血液清除率。以前，通过物理和分子相结合的方法来分 …

The molecular weight, purity, and functionalization of polyethylene glycols are often characterized by 1H NMR spectroscopy. Oft-forgotten, the typical 1H NMR pulse sequence is not 13C …

如果你的NMR是做完的产物，我想应该是你在反应时羟基没有完全反应，你可以对比一下买来的PEG2000单甲醚的NMR谱图. 1.84是不会有峰的，至少我的PEG2000单甲醚的核磁在这个位 …