Preparation And Characterization Of Organic/Inorganic Composites Based On C₆₀ Derivatives

The organic/inorganic composites, as new materials that combine the inorganic phase's rigidity,stability and the organic phase's toughness and workability, have important theoretical and realisticsignificance in materials science. C₆₀ is a brand-new holosymmetry spherical molecule with theunique physical and chemical property, displaying wide implications and applications of physics,chemistry, biology, materials science, medicine, electronics, and so on. The thesis is focused on thepreparation of organic/inorganic composites based on the C₆₀ derivatives, to explore the effects ofwater soluble C₆₀ derivatives on the morphologies, structures and sizes of composites, and therelationship between the structures and performance of materials, with a view to expanding the rangeof applications of this kind of materials.1. The composites, C₆₀(NH₂CH₂CH₂OH)_n-TiO₂ and C₆₀(NH₂CH₂CH₂OH)_n-SiO₂ wereprepared through liquid-phase-deposition technology (LPD), which were characterized by X-raypowder diffraction (XRD), transmission electron microscopy (TEM), Fourier Transform Infrared(FT-IR), scanning electron microscopy (SEM). The sizes of the composites can be changed from 150nm to 250 nm by modifying the concentration of C₆₀(NH₂CH₂CH₂OH)_n. It was found that theproducts' sizes decreased with increasing the concentration of C₆₀(NH₂CH₂CH₂OH)_n. Theexperimental conditions such as temperature, solvent have influences on the products' morphologyand size. The size decreased with the increasing of temperature. This simple route to C₆₀-basecomposites is meaningful to develop their applications.2. C₆₀(NH₂CH₂CH₂OH)_n-CdS nanoparticles have been prepared by using CdCl₂, Na₂S orthiourea and C₆₀(NH₂CH₂CH₂OH)_n as raw materials with ultrasonic irradiation, which werecharacterized by FT-IR, TEM. The experimental results show that the composites have no regularmorphology with sizes of 300-400 nm. The influences of sulfur source, solvents as well as theirconcentrations were studied. This will accumulate the data for size-controlled preparation.3. C₆₀(NH₂CH₂CH₂OH)_n-Fe₂O₄ nanoparticles are prepared by using FeCl₃·6H₂O, CH₃COONa,C₆₀(NH₂CH₂CH₂OH)_n and ethylene glycol as raw materials with solvothermal route. The productswere characterized by XRD, TEM, SEM, UV-Vis spectroscopy and fluorescence measurements, Itwas indicated that the porous monodisperse Fe₃O₄ nanostructures with sizes of 200-300 nm wereprepared without C₆₀(NH₂CH₂CH₂OH)_n, while the sample sizes decreased to 50 nm with theintroducing of C₆₀(NH₂CH₂CH₂OH)_n. This may be related to the action of C₆₀(NH₂CH₂CH₂OH)_n ascrystal seed. This novel C₆₀(NH₂CH₂CH₂OH)_n-Fe)3O₄ nanocomposites have important significance tothe controlled synthesis and the property improving of nanomaterials.4. C₆₀(NH₂CH₂CH₂OH)_n-ZnO nanocomposites were prepared by using Zn(Ac)₂·2H₂O,CH₃COONa, C₆₀(NH₂CH₂CH₂OH)_n and ethylene glycol as raw materials with a solvothermal route,which were characterized by XRD, TEM, SEM, UV-Vis spectroscopy and fluorescencemeasurements. The ZnO sample obtained in the absence of C₆₀(NH₂CH₂CH₂OH)_n is nearlymonodisperse ZnO "nanobullets". The introduce of C₆₀(NH₂CH₂CH₂OH)_n effectively promotedZnO "nanobullets" assembling into hollow microspheres with "peanut" structure. This research hasimportant theoretical value and is meaningful for the research of nanodevices.