Preparation And Application Of Carbon Nanocomposites Based On Cyclodextrin

Supramolecular chemistry is a split-new discipline, which has a cross between many disciplines, such as biology, physics, information science, materials science and medical science. Cyclodextrins (CDs) have attracted the attention of many people because of the hydrophilic external surface and hydrophobic internal cavity of CDs. CDs can form supramolecular host-guest inclusion complexes with a large amount of hydrophobic molecules, including organic molecules, inorganic molecules, medicine moleculars and biological molecules. In this dissertation, we have studied the combination between CDs and conducting polymers, and studied the application of composite materials in the field of catalysis, electrochemistry and biomedical. Contents of this paper was divided into the following three aspects:1. Synthesis of PANI/CNT@Au (or Pt) and the applications as catalysisHydroxypropyl-β-cyclodextrin (HP-β-CD) is a kind of cyclodextrin derivative, which has high water solubility. In this research, HP-β-CD and aniline molecules form host-guest inclusion complexes, while the presence of non-covalent interaction between hydroxypropyl-β-cyclodextrin with carbon nanotubes, making uniform polyaniline wrapped in carbon nanotube surface. Then, based on the complexes, the PANI/CNT supported Au (or Pt) nanoparticles PANI/CNT@Au (or Pt) were prepared by precipitation-reduction method. And we studied the catalytic performance, the results demonstrated the noble metal nanoparticle composite exhibit catalytic activity.2. Preparation and electrochemical characteristics of PPy/CNT nanocompositesA novel polypyrrole/carbon-nanotube (PPy/CNT) nanocomposite was successfully prepared in this research. The principle is similar to the previous chapter, Hydroxypropyl-β-cyclodextrin as a host molecule, pyrrole as guest molecules to form a host-guest inclusion complexes. Then, we synthesized polypyrrole composites with carbon nanotubes, while controlling the amount of pyrrole monomer, the realization of nanotube outer wrap layer of polypyrrole thickness controllability. Experimental results showed that the composite materials can be served as excellent materials for supercapacitors.3. Preparation of water-soluble C60inclusion complexes and its inhibition of B16-F10melanoma cell growth Due to the high water solubility of y-cyclodextrin polymer (y-CDP), we prepared water-soluble C6(/y-CDP inclusion complexes and studied the form of composition. Irradiation with light, due to the generation of energy and electron transfer, C60can generate singlet oxygen (1O2) and other active oxygen species, while1O2is lethal to cells. Therefore, we looked into the cellular viability, when the case is in the light of C6o/γ-CDP.Experimental results showed that under visible light irradiation C60/y-CDP produce1O2slowly, but in the long-wave ultraviolet light (UVA) irradiation, resulting in greatly improved the speed of1O2. Therefore, we investigated the inhibition of B16-F10melanoma tumor cell growth, which is expected to be applied in clinical medicine.