相关实验视频

Updated: Jan 7, 2026

Generation of Scalable, Metallic High-Aspect Ratio Nanocomposites in a Biological Liquid Medium

Generation of Scalable, Metallic High-Aspect Ratio Nanocomposites in a Biological Liquid Medium

Published on: July 8, 2015

元素组成和降解速度影响铜化物纳米晶体的生物相容性

Xingjian Zhong^1,2, G Perry Katsarakes¹, Savani Nagarkar²

¹Department of Biomedical Engineering, Boston University, Boston 02215.

bioRxiv : the preprint server for biology

|December 25, 2025

概括

铜硫化物纳米晶体 (NCs) 由于快速降解和离子释放,具有很高的毒性. 修改它们的涂层可以减少降解和毒性,从而实现更安全的生物医学应用.

科学领域:

纳米技术纳米技术
材料科学材料科学材料科学
生物医学工程生物医学工程

背景情况:

铜化物纳米晶体 (NCs) 为生物光子学提供可调节的光学特性.
评估NC降解和毒性对于生物相容纳米结构的开发至关重要.

研究的目的:

比较三个铜化物NC组合物的降解和毒性.
研究表面涂层对NC生物相容性的影响.

主要方法:

开发了一种定量检测,用于从微粒涂层的NC中释放离子.
在人造 lysosomal 液体中评估降解.
进行了细胞毒性测定.

主要成果:

所有的NC都是生物降解的;CuInS2和CuFeS2呈现出快速降解和离子释放.
由于诱导的亡,CuInS2的毒性更高.
替代性聚合物涂层降低了CuInS2降解率和细胞毒性.

结论:

纳米晶体的组成和涂层化学显著影响生物相容性.
调整组合和降解速度可以适度纳米粒子毒性用于生物医学用途.

更多相关视频

Removal of Trace Elements by Cupric Oxide Nanoparticles from Uranium In Situ Recovery Bleed Water and Its Effect on Cell Viability

Removal of Trace Elements by Cupric Oxide Nanoparticles from Uranium In Situ Recovery Bleed Water and Its Effect on Cell Viability

Published on: June 21, 2015

Author Spotlight: Advances in Evaluating Human Lung Epithelial Cells' Response to Metal-Organic Frameworks

Author Spotlight: Advances in Evaluating Human Lung Epithelial Cells' Response to Metal-Organic Frameworks

Published on: May 26, 2023

相关概念视频

Extraction: Advanced Methods

Extraction: Advanced Methods

Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...