Dissertation > Excellent graduate degree dissertation topics show

Controllable Synthesis and Characterization of [60] Fulleropyrrolidine Derivatives Micro/Nano Structures

Author: HuangFei
Tutor: WeiXianWen
School: Anhui Normal University
Course: Organic Chemistry
Keywords: C60 fulleropyrrolidine derivatives micro/nano structures surfactant-assist self-assembly
CLC: TB383.1
Type: Master's thesis
Year: 2010
Downloads: 21
Quote: 0
Read: Download Dissertation

Abstract


The studies on synthesis and properties of C60-based nanosized materials have been an active topic in the fullerene chemistry. Fabrication of functional fulleropyrrolidine derivatives micro/nano structures, optimizing synthesis condition, studying their photophysical and photochemical properties and exploring novel fullerene-based materials are remarkably meaningful. The thesis is focused on fabrication of [60]fulleropyrrolidine derivatives micro/nano materials by decreasing their solubility, studying the effects of solvents, concentration, surfactant kinds and concentration, temperature and substitute group on C60 on crystal morphology. Fabrication of functional dissymmetric fulleropyrrolidine derivatives micro/nano structures, study their photoelectronic properties will accumulate the date to synthesize novel photoelectronic materials, and will play an important role in exploring new fullerenes-base materials and developing fullerene chemistry. The thesis consists of two aspects as follows:1. N-methyl-2-[4-dimethyl-amido]phenyl-3,4-fulleropyrrolidine was synthesized by 1,3-dipolar cycloaddition reaction, different morphologies of nanostructures were fabricated for the first time using the surfactant assisted self-assembly method. The crystalline structure was characterized by scanning electron microscopy （SEM）, transmission electron microscopy （TEM）, high resolution transmission electron microscopy （HRTEM）, selected area electron diffraction （SAED）, Raman spectroscopy （Raman） and Photoluminescence （PL） spectroscopy. N-methyl-2-[4-dimethyl-amido]phenyl-3,4-fulleropyrrolidine with anomalistic flakes and regular blooming peonies were obtained and controlled by using different solvents, concentration, surfactant, temperature, and volume ratio of toluene and isopropanol. It is demonstrated that surfactant molecules can assist the crystallization process of the fulleropyrrolidine derivatives. PL spectra and Thermal gravimetric analysis （TGA） showed that the flakes and flowers have narrow PL peak widths and lower intensity than that of powder, which is likely caused by the solvents quenching. These results are remarkably meaningful for studying the controllable fabrication and property of fulleropyrrolidine derivatives micro/nano structures.2. N-methyl-2-pentafluorophenyl-3,4-fulleropyrrolidine, N-methyl- 3,4-fulleropyrrolidine and N-methyl-2-phenyl-3,4-fulleropyrrolidine were synthesized by 1,3-dipolar cycloaddition reaction, their nanostructures with different morphologies were fabricated for the first time using the surfactant assisted self-assembly. The crystal formation, crystalline structure and morphology can be controlled by using different solvents, concentration, surfactant and volume ratio of solvents. N-methyl-2-pentafluorophenyl-3,4-fulleropyrrolidine crystalline structures with morphology of anomalistic grains and flakes, N-methyl-3,4-fulleropyrrolidine crystalline structures with morphology of different size grains, and nomalistic grains, flakes and regular needle-like structures of N-methyl-2-phenyl-3,4-fulleropyrrolidine were obtained. Their crystalline structures and morphologies can be controlled by using different kinds of solvents, surfactant, and different concentrations, volume ratios. When toluene was used as solvent, the crystalline structure and morphology can be well controlled, but not CCl4 do. The appropriate concentration and volume ratio of solvents were important for the crystalline structure and morphology, which is possibly related to the ability of the isopropanol and toluene to intermix and thus have similar polarities, resulted in that the crystal grows more slowly and there is a ripen process. This method supplies controllable preparation of C60-based micro/nano materials.

Related Dissertations

  1. Optical micro-nano structure preparation and application of,TH703
  2. The Biological Function of Several Material Through Autophagy Modulation,Q2-3
  3. Study of Fluorescence of C60 in Pyridine at Room-temperature and Preparation of AAO Template,O482.31
  4. Synthesis and Properties of [60] Fullerene Derivatives Containing Bipyridine,O626
  5. The Research for the Effect and the Mechanism of C60 and Its Derivatives on the Growth of Cells,Q599
  6. Studies of Fluorescence of Fullerene and Photoelectric Properties of Fullerene Modified Blm,O561
  7. Synthesis and Saperation of Bis-1-（3-methoxycarbonyl）propyl-1-phenyl[6,6]C62,TQ245.24
  8. The Study of Laser-induced Thermoplastic Formation and Three-Dimensional Microstructure Fabrication,TN249
  9. Spectrum characteristics of single- walled carbon nanotubes and fullerene nanomaterials,TB383.1
  10. The new superconductor angle-resolved photoelectron spectroscopy and fullerene inelastic X-ray scattering studies,O434.1
  11. Study on DNA Damage Mechanism and Toxicity Effects of Fullerene,X171.5
  12. The Preparation of Nanoscale Golden Surface of SERS Substrate by Pulsed Laser and the Application in Raman Spectroscopy,O561.3
  13. Study of Novel SERS Active Substrates and C60 Modified Bilayer Lipid Membrane （BLM）,O561.3
  14. Performance Improvement of Organic Small Molecule Light-emitting Diodes,TN312.8
  15. Large Area and High Aspect Ratio Scanning Tunneling Microscope Technology,TH742
  16. The Reduction of Complex Precursor Cobalt Bis(4-pyridine Carboxylate) Tetrahydrate under External Magnetic Fields and the Synthesis of Cobalt Micro-/Nano Structures,TB383.1
  17. The Structures and and Stabilities of Fluorinated and Hydrogenated Fullerenes,O613.71
  18. The Electrical Properties of Graphite, C60, and Cu2O under High Pressure,O613.71
  19. Design Synthesis and Photoluminescence、Photoelectric Conversion Properties of ZnS、ZnO、TiO2 Micro-nanostructures,TB383.1
  20. Metal Nanomaterials Synthesis and Their Biomedical Application,TB383.1

CLC: > Industrial Technology > General industrial technology > Materials science and engineering > Special structural materials
© 2012 www.DissertationTopic.Net  Mobile