大理大学学报

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赖氨酸-甘氨酸共聚物的合成与性能研究

  

  1. 1.大理大学药学与化学学院,云南大理671000;2.宁德师范学院闽东畲医药福建省高校工程研究中心,
    福建宁德352100
  • 收稿日期:2020-03-04 出版日期:2020-06-15 发布日期:2020-06-15
  • 作者简介:张雨欣,硕士研究生,主要从事药物载体材料研究。
  • 基金资助:
    国家自然科学基金项目(31560268);福建省自然科学基金项目(2019J0106);宁德师范学院生物医用材料创新
    团队项目(2018T02)

Study on the Synthesis and Property of Poly(L-lysine)-Block-Poly(glycine)

  1. 1. College of Pharmacy and Chemistry, Dali University, Dali, Yunnan 671000, China; 2. Fujian Province University Engineering
    Research Center of Mindong She Nationality Medicine, Ningde Normal University, Ningde, Fujian 352100, China
  • Received:2020-03-04 Online:2020-06-15 Published:2020-06-15

摘要: 目的:采用简便高效的方法制备具有官能团及适当粒径大小的聚氨基酸纳米胶束。方法:以Nε-苄氧羰基-L-赖氨酸
环内酸酐(Lys(Z)-NCA)和甘氨酸-N-羧基环内酸酐(Gly-NCA)为原料,采用α-氨基酸-N-羧基酸酐(NCA)开环聚合,经脱保
护后制备了一系列侧链含有氨基的赖氨酸-甘氨酸共聚物Poly[KmGn]。采用核磁共振氢谱(1H-NMR)对产物的结构进行分
析;采用扫描电子显微镜(SEM)及动态光散射(DLS)对所合成的聚氨基酸共聚物的微观形态、粒径及分布等进行研究。结果:
所合成的聚氨基酸共聚物符合分子设计,不同聚氨基酸共聚物可自组装形成粒径小于200 nm、粒径分布均匀的球型纳米胶束
结构,且胶束粒径大小随聚氨基酸单体的组成含量改变而变化。结论:成功制备了系列聚氨基酸纳米胶束,可以通过改变聚氨
基酸分子组成调节胶束粒径的大小。

关键词: 聚氨基酸, NCA开环聚合, 纳米胶束, 粒径及分布

Abstract: Objective: To prepare polyamino acid micelles with functional groups and appropriate particle size by a simple and
efficient method. Methods: Using Lys(Z)-NCA and Gly-NCA as raw materials, a series of glycine-lysine copolymers Poly[KmGn]with
side-chain containing amino were prepared by ring-opening polymerization of NCA. The structure of the product was analyzed by
nuclear magnetic resonance(1H-NMR). The morphology, particle size and distribution of the synthesized poly(amino acid)copolymer
were studied by using scanning electron microscopy(SEM)and dynamic light scattering(DLS). Results: The synthesized polyamino
acid copolymers were in accordance with the molecular design. Different polyamino acid copolymers could be self-assembled into
spherical micelles with particle size of less than 200 nm and a uniform particle size distribution, and the particle size of the micelles
changed with the composition and content of polyamino acid monomers. Conclusion: A series of polyamino acid nano-micelles have
been prepared successfully, and the particle size of the micelles can be adjusted by changing the molecular composition of polyamino acid.

Key words: polyamino acid, NCA-ring-opening polymerization, nano-micelle, particle size and distribution