The present invention relates to an amphiphilic block copolymer represented by formula I, a preparation method thereof, and a nanomicelle drug delivery system formed from the copolymer and a poorly soluble drug. The amphiphilic block copolymer includes a hydrophilic chain segment, a hydrophobic chain segment, and a linker for linking the hydrophilic chain segment to the hydrophobic chain segment. The linker contains an unsaturated structure, which can enhance the interaction between the poorly soluble drug and the copolymer to improve the drug loading ability and stability of the nanomicelle. The invention also relates to a nanomicelle drug-loading system, a preparation method thereof, and the use of the nanomicelle drug-loading system for preparing medicines for treating tumors, inflammation, diabetes, central nervous system diseases, cardiovascular diseases, and psychological disorders.
                            本发明涉及一种由式 I 表示的两亲嵌段共聚物、其制备方法以及由该共聚物和一种难溶性药物形成的纳米胶束给药系统。两亲嵌段共聚物包括亲
水链段、疏
水链段和用于连接亲
水链段和疏
水链段的连接剂。链接剂含有不饱和结构,可增强溶解性差的药物与共聚物之间的相互作用,从而提高纳米胶束的载药能力和稳定性。本发明还涉及一种纳米胶束载药系统及其制备方法,以及该纳米胶束载药系统用于制备治疗肿瘤、炎症、糖尿病、中枢神经系统疾病、心血管疾病和心理障碍的药物。