of dispersity. We also show for the first time that it is possible to discriminate between PEOs differing in only 1 ethylene oxide (EO) unit, essential in order to verify the exceptionally low levels of dispersity achieved here. It is anticipated that the synthesis of poly(ethylene oxide) approaching monodispersity will be of value in many fields where the applications are sensitive to the distribution
聚合物中的多分散性妨碍了对其结构-性质关系的基本了解,并阻碍了它们在医学等领域使用,因为多分散性会影响
生物活性。相对短链的聚
环氧乙烷[(CH 2 CH 2 O 2)n的多分散性; [P
EO]影响其
生物学活性,例如,P
EO酰化药物的毒性和功效。结果,已经进行了巨大的努力以尽可能降低分散度(不可能真正地单分散的材料)。在这里,我们报告了一种合成程序,该程序导致了前所未有的低分散度。我们还首次表明,可以区分只有一个
环氧乙烷(
EO)单元不同的P
EO,这对于验证此处实现的极低分散度至关重要。预计接近单分散性的聚
环氧乙烷的合成将在许多应用中对摩尔质量的分布敏感的领域中具有价值。