Poly-L-lysine (PLL) is a polycation with good biocompatibility and biodegradability. It can interact with multi-walled carbon nanotubes (MWCNTs) to form composite materials. The application of poly-L-histidine as a polycationic dispersed multi-walled carbon nanotube will be described in detail below.
Dispersion stability: Multi-walled carbon nanotubes are highly hydrophobic and lipophilic, which makes it difficult to disperse uniformly in the aqueous phase. Poly-L-histidine can effectively disperse multi-walled carbon nanotubes by electrostatically interacting with them to form charge-neutral or positively charged complexes. This dispersion can improve the dispersion stability of multi-walled carbon nanotubes, preventing their deposition and aggregation in solution.
2.Biological applications: Poly-histidine-dispersed multi-walled carbon nanotubes offer potential advantages in biological applications. Due to the good biocompatibility of poly-histidine, poly-histidine dispersed multi-walled carbon nanotubes can be used in biomedical fields, such as drug delivery, gene delivery, imaging, etc. In addition, poly-L-histidine can also modulate the properties and functions of multi-walled carbon nanotubes by changing their molecular structure and functionalization to meet specific application needs.
3.Electronic materials: Poly-histidine dispersed multi-walled carbon nanotubes can also be applied to the field of electronic materials. Multi-walled carbon nanotubes have excellent conductivity and mechanical properties, and can be added to polymer matrices as conductive enhancers to improve the material's propertiesConductivity and mechanical properties。The dispersion of poly-L-histidine can ensure the uniform dispersion of multi-walled carbon nanotubes in the polymer matrix, resulting in conductive composites with excellent properties.
4.Nanocomposites: Poly-histidine-dispersed multi-walled carbon nanotubes can also be combined with other nanomaterials to formNanocomposites。For example, poly-histidine-dispersed multi-walled carbon nanotubes can interact with nanoparticles, nanofibers, etc., to form nanocomposites with specific structures and functions. These nanocomposites can be applied to catalysis, sensing, energy, and other fields.
In summary, poly-L-histidine as a polycation can effectively disperse multi-walled carbon nanotubes and endow them with specific properties and functions. By regulating the methods and conditions of poly-histidine dispersed multi-walled carbon nanotubes, the dispersion, stability and directional assembly of multi-walled carbon nanotubes can be realized, which provides a new way for their application in biomedicine, electronic materials and nanocomposites.