Korimako Chemical Limited, Wellington, New Zealand.
Department of Chemistry, College of the Ozarks, Point Lookout, MO.
Magn Reson Chem. 2020 Jul;58(7):641-647. doi: 10.1002/mrc.4997. Epub 2020 Jan 30.
Benchtop nuclear magnetic resonance (NMR) spectroscopy is a useful tool for the rapid determination of the self-diffusion coefficient and the hydrodynamic radius of dendrons. The self-diffusion coefficients of the first four generations of poly ethoxy ethyl glycinamide (PEE-G) dendrons are measured by diffusion-ordered spectroscopy (DOSY) on a benchtop NMR equipped with diffusion gradient coils. The hydrodynamic radii of the dendrons are calculated via the Stokes-Einstein equation. The effects of solvent and pH are determined with the hydrodynamic radius increasing with generation and decreasing upon neutralization of an acidic solution. These measurements provide valuable information for biological and pharmaceutical applications of dendrons.
台式核磁共振（NMR）光谱学是一种快速测定树枝状聚合物自扩散系数和水动力半径的有用工具。采用带有扩散梯度线圈的台式 NMR 通过扩散排序光谱（DOSY）测量了前四代聚乙氧基乙酰胺（PEE-G）树枝状聚合物的自扩散系数。通过斯托克斯-爱因斯坦方程计算树枝状聚合物的水动力半径。通过水动力半径随代际增加以及酸性溶液中和时减小的方式来确定溶剂和 pH 值的影响。这些测量为树枝状聚合物在生物和制药方面的应用提供了有价值的信息。
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