Dissertation > Excellent graduate degree dissertation topics show

Fabrication and Photochromic Properties of Pyrazolone Derivatives and Pyrazolone/ Polymer Composite Film

Author: YuanHui
Tutor: JiaDianZeng；GuoJiZuo
School: Xinjiang University
Course: Chemistry
Keywords: Pyrazolone Photochromism thermochromism polymer film
CLC: O631.3
Type: Master's thesis
Year: 2011
Downloads: 79
Quote: 2
Read: Download Dissertation

Abstract


Organic photochromic compounds have wide applications in the areas of high technique and daily life, pyrazolone compounds have the potential application value in the field of high density information storage because of the unique structure and good photochromic properties in the solid state. Design and synthesize pyrazolone compounds which have excellent photochromic properties has a very important significance to research this kind of photochromic material properties. Moreover, in order to make the photochromic compounds has more advantages in device manufacturing, the pyrazolone/polymer composite films have been fabricated.On the basis of previous work in our laboratory, new series of pyrazolone semicarbazones and phenylsemicarbazones containing different substitute group at 3- and 4-position on pyrazolone-ring have been synthesized by the designing of molecules and the modification of structures. Discusses the relationship between the structure and the photochromic performance according to the research of structure and optical properties. At same time, the photochromic properties of pyrazolone compounds in powders state and polymer film have been studied. These research results provides theoretical foundation to design synthetic and applications of this kind of photochromic compounds.In the first chapter, eight new 1-phenyl-3-4-Bromobenzoyl-4-substituted phenyl -5-pyrazolone semicarbazones and phenylsemicarbazones have been synthesized, four pyrazolone phenylsemicarbazones compounds exhibited highly reversible photoisomerization reactions, and pyrazolone semicarbazones compounds have no Photochromic properties. The composition and structures of these photochromic compounds were characterized by IR, 1HNMR spectra, the photochromic properties have been studied by solid-state UV-vis absorption spectra and fluorescence emission spectra, meanwhile, we have researched the fading behavior of these photochromic compounds at different temperatures. In the second chapter, twelve new pyrazolone semicarbazones and phenylsemicarbazones have been synthesized. Among the pyrazolone phenylsemicarbazones compounds, P4BrP4FBP-PSC has reversible photochromic properties, other of them have irreversible photochromism, but have thermochromism performance under light induction. Among the pyrazolone semicarbazones compounds, two of them have reversible photochromism. The photochromic behavior and fading behavior of these photochromic compounds have been studied.In the third chapter, we designed and synthesized a pyrazolone pyrazolone phenysemicarbazone comound which has good photochromic properties to fabricate pyrazolone/polymer composite film by the solvent evaporation. we have researched the existence form of copmound in polymer matrix, and the photochromic behavior and fading behavior of compound in powders state and polymer HPMC (Hydroxypropylmethylcellulose) film have been studied, and the results show that the photochromic pyrazole/polymer composite film which fabricated by doping photochromic compounds into polymer still keep good optical properties compare to the photochromic compounds.

Related Dissertations

  1. Preparation and Properties of Magnetic Polymer Film,TB383.2
  2. Dehydration Reaction of β-Oxo Oximes: Synthesis of Isoxazoles and Pyrazolin-5-ones,O621.25
  3. Preparation of Photo-and Thermo-chromic Composite Materials and Their Application Research,TB34
  4. Generation and Trapping of an Active 2-Methylene 1,3-Dicarbonyl Intermediate,O621.3
  5. Synthesis and Antibacterial Activities of O-Hydroxy Phenyl Pyrazoles and Their Intermediates,O626.21
  6. One-pot and Green Synthesis of Isoxazol-5-one and Pyrazol-5-one Derivatives,O626.2
  7. Synthesis, Structures and Solid-state Photochromic Properities of Pyrazolone Derivatives,O626.21
  8. Crystal Structure and Character Ization of 4-4’-Diacylpyrazol-5-One and Their Complexes,O633.5
  9. Crystal Structure and Properties of 4-hexanoyl-pyrazolone and Its Metal Complex,O621.13
  10. The design , synthesis and pharmacological studies of FXR antagonists , and 4 - arylmethylene replace the pyrazolone derivatives studies,R96
  11. Synthesis and Photochromic Properties of 4-Heterocyclic /Substituted Benzoyl Pyrazolones in the Solid State,O621.3
  12. Studies on Complexes of 4-Acyl Pyrazolone Derivatives,O641.4
  13. Synthesis, Photochromic Properities and Molecular Logic Switches of Schiff Base Containing Pyrazolone,O626.2
  14. Polymer dispersed organic photochromic compounds and properties of thin films,O631.3
  15. Preparation and Photochromism or Thermochromism of Azo Shiff’s Compounds,O626
  16. A Non-reductive O-linked Glycan Release and Simultaneously Derivatization with PMP Coupled with ESI-MS Analysis,Q503
  17. Pyrazolone derivatives and organic tin compounds synthesis, structural characterization and properties of,O627.42
  18. Synthesis, Characterization and Bioactivities of Rare Earth Heterocycle Analogic Complexes,O641.4
  19. Extraction and Chemical Component Analysis of Polysaccharides from Different Sea Cucumbers,TS254.7
  20. Studies on Synthesis and Photochromic Properties of Pyrazolone Derivants in the Solid State,O626.21

CLC: > Mathematical sciences and chemical > Chemistry > Polymer chemistry ( polymer ) > Polymer physics and physical chemistry of polymers > The chemical nature of polymers
© 2012 www.DissertationTopic.Net  Mobile