磁纳米颗粒的聚合功能化与水溶液中转白醇在水溶液中
Thi-Nga Nguyen1,2,3, Quang-Hung Tran2,4, Ferial Terki5
1UMR IATE, Institut Agro, INRAE, University of Montpellier, 34060, Montpellier, France.
Discover nano
|June 29, 2023
概括
功能化的磁纳米粒子与转白醇被开发用于蛋白质结合. 研究了它们在不同pH值的聚合行为,揭示了对于生物应用至关重要的pH值依赖分散.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 生物化学 生物化学
背景情况:
- 转白醇是一种天然的化合物,具有药理上的好处.
- 蛋白质 - 配体相互作用对于生物过程至关重要.
- 磁纳米颗粒为生物分离和药物输送提供了独特的特性.
研究的目的:
- 开发磁性纳米颗粒与蛋白质连接物捕鱼的转白醇有共连接.
- 研究这些功能化纳米粒子在不同pH值的水溶液中的聚合行为.
- 描述了resveratrol-grafted磁纳米颗粒的物理和光学特性.
主要方法:
- 合成磁纳米粒子与一个贝.
- 通过三种不同的衍生物,转白醇的共价连接.
- 动态光散射 (DLS) 用于水力动力直径和多分散分析.
- 紫外线-Vis光谱仪用于灭绝和吸收横截面测量.
- 测量泽塔电位以评估表面电荷.
主要成果:
- 这些纳米粒子表现出适合磁性生物分离的超偏磁性行为.
- 水力动力直径从100nm显著增加到800nm,因为pH从10.0降低到3.0.
- 在pH值7.0和3.0之间观察到尺寸多分散.
- 通过吸收光谱证实了复星的移植,而分散性质则由贝主导.
- 随着pH值的增加,泽塔潜力变得更加负面,影响了纳米粒子的分散和聚合.
结论:
- 功能化的磁性纳米粒子显示了依赖pH的聚合行为.
- 由于强大的表面排斥,在性条件下实现单分散性.
- 在酸性条件下,随着表面电荷的减少,聚合会发生.
- 这些发现对于理解生物环境中的纳米粒子行为至关重要.
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