The synthesis of blockcopolymers carrying functional groups at defined distance is described. Polyethy-leneglycol of various molecular weight is reacted with 3,5-diisoyanato benzylchlorid and 3-nitro-3-aza-pentan-1,5 diisocyanate, respectively. The exact amount of OH-groups of the polyethyleneglycol blocks used in the polyad-dition reaction is determined spectroscopically after quantitative reaction
描述了在限定距离处带有官能团的嵌段共聚物的合成。使各种分子量的聚
乙烯-
乙二醇分别与3,5-二异
氰酸基苄基
氯和
3-硝基-3-氮杂-
戊烷-1,5-二
异氰酸酯反应。加聚反应中使用的聚
乙二醇嵌段的OH-基团的确切数量在与
异氰酸苯酯定量反应后,通过光谱法确定。因此,获得了高分子量的聚合物。通过四肽的合成证明了在根据液相方法的逐步肽合成中这些共聚物作为增溶保护基的相容性。