And the diblock copolymer PI-b-PEO with an azide group was obtained by a series of modification of the hydroxyl group at the junction point.

• 然后将羟基的保护基团脱除，并通过一系列反应将得到的“活性”羟基依次溴化和叠氮化，最后得到链段中间含叠氮基团的嵌段聚合物PI-b-PEO。