碳纳米滴:它们在复杂溶液系统中的形成和稳定性
Yuwen Ji1,2, Jin Zheng1,2, Zhanli Geng3,4
1Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China.
Langmuir : the ACS journal of surfaces and colloids
|April 18, 2024
概括
研究人员探索了 perfluorohexane纳米滴 (NDs) 在电解质中的稳定性. 电解质离子度和价值极其控制ND的形成和稳定性,使生物技术和医学的定制应用成为可能.
科学领域:
- 生物技术和纳米技术
- 材料科学 材料科学 材料科学
- 物理化学 物理化学
背景情况:
- perfluorocarbon nanodroplets (NDs) 具有多种应用,但它们在生物环境中的稳定性至关重要,但尚未得到充分探索.
- 目前制造低能量的稳定,均的ND的方法有限,阻碍其在生理条件下使用.
- 表面稳定剂的潜在毒性限制了在先进医疗干预中使用ND的应用.
研究的目的:
- 研究未涂层 perfluorohexane (PFH) NDs的形成和稳定性.
- 探索电解质组成和pH对ND特性的影响.
- 开发一种方法来创建稳定的ND,适用于没有表面稳定剂的生理环境.
主要方法:
- 通过低能溶剂交换技术合成未涂层的甲 (PFH) 纳米滴 (ND).
- 研究了各种电解质组成和pH值的ND形成和稳定性.
- 提出了一种基于电解质诱导的表面修饰的稳定机制.
主要成果:
- 低价值电解质离子的低度促进了ND核和加速奥斯瓦尔德成熟.
- 高度的高价值电解质离子抑制了核形成,并减缓了奥斯瓦尔德的成熟.
- 电解质通过改变离子吸附,电双层厚度和液滴间能量屏障来影响ND稳定性.
结论:
- 电解质组成精确地控制了高碳纳米滴的稳定性.
- 建立了一种在生理条件下制备稳定,裸体PFCND的方法.
- 这些发现为在生物和医疗应用中使用赤裸的PFC NDs提供了理论基础.
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