Title page for etd-0815112-171440


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URN etd-0815112-171440
Author Mi-Ting Tsai
Author's Email Address No Public.
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Department Chemistry
Year 2011
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Synthesis of 3,3’-dihydroxy-2,2’-bipyridine Derivatives and Applications
Date of Defense 2012-06-21
Page Count 122
Keyword
  • calamitic
  • liquid crystal
  • iodine(III) reagents
  • bipyridine
  • coupling reaction
  • Abstract The thesis can be divided into two chapters: synthesis and application. The first chapter presents the basis of synthesis. Generally, electronic-deficient aromatic molecules require activation before reacting with metal reagents and then can go coupling reaction. Our lab has developed a new bipyridine coupling method without pre-functionalization of pyridines to the corresponding activated halide or metal forms or using of transition metal catalysts. This new method is quite efficient and advantageous for environmental protection.
      In second chapter, we synthesized 3,3’-dihydroxy-2,2’-bipyridine -based molecules and the functional groups were modified to investigate its liquid crystal properties. According to analyzing data of differential scanning calorimetry (DSC), polarized optical microscope (POM) and powder x-ray diffraction (XRD), we found that a-3 may possess cubic mesophaes with Im3m symmetry, and a series of d-1~d-3 compounds exhibit mesophase and may be further identified as smectic phase.
    Advisory Committee
  • Wen-Jun Zheng - chair
  • Tsu-Hsin Chang - co-chair
  • Kwang-Ming Lee - co-chair
  • Chi-Wi Ong - advisor
  • Files
  • etd-0815112-171440.pdf
  • Indicate in-campus at 99 year and off-campus access at 99 year.
    Date of Submission 2012-08-15

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